{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,12,27]],"date-time":"2025-12-27T07:27:37Z","timestamp":1766820457647,"version":"build-2065373602"},"reference-count":94,"publisher":"MDPI AG","issue":"19","license":[{"start":{"date-parts":[[2022,9,26]],"date-time":"2022-09-26T00:00:00Z","timestamp":1664150400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"State Key Laboratory of Earth Surface Processes and Resource Ecology","award":["2022-GS-01","2019YFA0606904","2018YFC509003"],"award-info":[{"award-number":["2022-GS-01","2019YFA0606904","2018YFC509003"]}]},{"DOI":"10.13039\/501100004663","name":"National Key Research and Development Program of China","doi-asserted-by":"publisher","award":["2022-GS-01","2019YFA0606904","2018YFC509003"],"award-info":[{"award-number":["2022-GS-01","2019YFA0606904","2018YFC509003"]}],"id":[{"id":"10.13039\/501100004663","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>The Three Rivers Source Region (TRSR) is a natural habitat for rare animals and a genetic treasure trove of plateau organisms. It is an important eco-safety barrier in China and even Asia, and a priority of China\u2019s to promote ecological advancement. Precisely assessing the dynamics and mechanisms of alpine grassland ecosystem carbon budgets is beneficial for quantifying the response to climate change on a regional scale. The spatial distribution and dynamic changes in carbon fluxes in the TRSR from 1985 to 2018 were analyzed by the Theil\u2013Sen + Mann\u2013Kendall and ensemble empirical mode decomposition (EEMD) methods, and multiple linear regression was used to quantify the contribution of meteorological elements to the carbon flux trends. The results indicated that (1) the alpine grassland ecosystem was a weak carbon sink. The multiyear mean gross primary production (GPP) and net ecosystem production (NEP) in the TRSR were 147.86 and 11.27 g C\/m2\/yr, respectively. The distribution of carbon fluxes progressively decreased from east to west. (2) The carbon fluxes of the alpine grassland ecosystem were dominated by a monotonically increasing trend, with increasing rates of GPP and NEP of 1.31 and 0.40 g C\/m2\/yr, respectively. A total of 48.60% of the alpine grassland showed a significant increase in NEP, whereas only 0.21% showed a significant decrease during the research term. (3) The alpine meadow sequestered carbon better than the alpine steppe did and accounted for more than 60% of the regional carbon sink. (4) In a correlation analysis between NEP and temperature, precipitation and solar radiation, the positive correlation accounted for 89.67%, 90.51%, and 21.16% of the TRSR, respectively. Rising temperatures and increased precipitation were the main drivers contributing to the increase in NEP. Research on carbon budget variability and mechanisms can help guide preservation zoning initiatives in national parks.<\/jats:p>","DOI":"10.3390\/rs14194795","type":"journal-article","created":{"date-parts":[[2022,9,28]],"date-time":"2022-09-28T03:30:37Z","timestamp":1664335837000},"page":"4795","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["The Three Rivers Source Region Alpine Grassland Ecosystem Was a Weak Carbon Sink Based on BEPS Model Analysis"],"prefix":"10.3390","volume":"14","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0936-5263","authenticated-orcid":false,"given":"Fucheng","family":"L\u00fc","sequence":"first","affiliation":[{"name":"State Key Laboratory of Earth Surface Processes and Resource Ecology, Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0774-9140","authenticated-orcid":false,"given":"Xiaodong","family":"Yan","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Earth Surface Processes and Resource Ecology, Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China"}]}],"member":"1968","published-online":{"date-parts":[[2022,9,26]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"711","DOI":"10.1038\/348711a0","article-title":"Increases in terrestrial carbon storage from the Last Glacial Maximum to the present","volume":"348","author":"Adams","year":"1990","journal-title":"Nature"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"205","DOI":"10.1006\/jare.2001.0902","article-title":"Carbon storage in grasslands of China","volume":"50","author":"Ni","year":"2002","journal-title":"J. Arid Environ."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"61","DOI":"10.1016\/j.jclepro.2013.02.003","article-title":"Greenhouse gas emissions and carbon stock changes in rubber tree plantations in Thailand from 1990 to 2004","volume":"52","author":"Petsri","year":"2013","journal-title":"J. Clean. Prod."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"229","DOI":"10.1046\/j.1365-2486.1998.00151.x","article-title":"The global carbon sink: A grassland perspective","volume":"4","author":"Scurlock","year":"1998","journal-title":"Glob. Chang. Biol."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"391","DOI":"10.1016\/S0269-7491(01)00215-9","article-title":"Soil carbon dynamics and potential carbon sequestration by rangelands","volume":"116","author":"Schuman","year":"2002","journal-title":"Environ. Pollut."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"600","DOI":"10.1038\/nature13376","article-title":"Contribution of semi-arid ecosystems to interannual variability of the global carbon cycle","volume":"509","author":"Poulter","year":"2014","journal-title":"Nature"},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"895","DOI":"10.1126\/science.aaa1668","article-title":"The dominant role of semi-arid ecosystems in the trend and variability of the land CO2 sink","volume":"348","author":"Raupach","year":"2015","journal-title":"Science"},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"e02582","DOI":"10.1002\/ecs2.2582","article-title":"Grasslands\u2014More important for ecosystem services than you might think","volume":"10","author":"Bengtsson","year":"2019","journal-title":"Ecosphere"},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1016\/j.jaridenv.2009.06.014","article-title":"Rangeland degradation on the Qinghai-Tibetan plateau: A review of the evidence of its magnitude and causes","volume":"74","author":"Harris","year":"2010","journal-title":"J. Arid Environ."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"781","DOI":"10.1007\/s11442-012-0963-9","article-title":"Runoff variation and its response to climate change in the Three Rivers Source Region","volume":"22","author":"Zhang","year":"2012","journal-title":"J. Geogr. Sci."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"104050","DOI":"10.1088\/1748-9326\/aba8c0","article-title":"Teleconnection patterns of precipitation in the Three-River Headwaters region, China","volume":"15","author":"Dong","year":"2020","journal-title":"Environ. Res. Lett."},{"key":"ref_12","doi-asserted-by":"crossref","unstructured":"Gao, J., Huang, X., Ma, X., Feng, Q., Liang, T., and Xie, H. (2017). Snow Disaster Early Warning in Pastoral Areas of Qinghai Province, China. Remote Sens., 9.","DOI":"10.3390\/rs9050475"},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"201","DOI":"10.1016\/j.agrformet.2012.07.013","article-title":"Trends in the thermal growing season throughout the Tibetan Plateau during 1960\u20132009","volume":"166\u2013167","author":"Dong","year":"2012","journal-title":"Agric. For. Meteorol."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"454","DOI":"10.1093\/nsr\/nwv058","article-title":"Plant phenological responses to climate change on the Tibetan Plateau: Research status and challenges","volume":"2","author":"Shen","year":"2015","journal-title":"Natl. Sci. Rev."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"43","DOI":"10.1038\/nature09364","article-title":"The impacts of climate change on water resources and agriculture in China","volume":"467","author":"Piao","year":"2010","journal-title":"Nature"},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"2940","DOI":"10.1111\/gcb.12277","article-title":"The impacts of climate change and human activities on biogeochemical cycles on the Qinghai-Tibetan Plateau","volume":"19","author":"Chen","year":"2013","journal-title":"Glob. Chang. Biol."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"6915","DOI":"10.1029\/2005JD006915","article-title":"Temporal trends and variability of daily maximum and minimum, extreme temperature events, and growing season length over the eastern and central Tibetan Plateau during 1961\u20132003","volume":"111","author":"Liu","year":"2006","journal-title":"J. Geophys. Res. Atmos."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"131","DOI":"10.1007\/s11442-006-0201-4","article-title":"Characteristics of grassland degradation and driving forces in the source region of the Yellow River from 1985 to 2000","volume":"16","author":"Liu","year":"2006","journal-title":"J. Geogr. Sci."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"459","DOI":"10.1007\/s00254-004-1161-6","article-title":"Land degradation in the source region of the Yellow River, northeast Qinghai-Xizang Plateau: Classification and evaluation","volume":"47","author":"Feng","year":"2005","journal-title":"Environ. Geol."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"259","DOI":"10.1007\/s11442-008-0259-2","article-title":"Grassland degradation in the \u201cThree-River Headwaters\u201d region, Qinghai Province","volume":"18","author":"Liu","year":"2008","journal-title":"J. Geogr. Sci."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"6151","DOI":"10.1038\/s41598-020-63137-x","article-title":"Spatial and temporal variations and significance identification of ecosystem services in the Sanjiangyuan National Park, China","volume":"10","author":"Cao","year":"2020","journal-title":"Sci. Rep."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"23","DOI":"10.1016\/j.gloplacha.2017.05.008","article-title":"Sensitivity of alpine grassland carbon balance to interannual variability in climate and atmospheric CO2 on the Tibetan Plateau during the last century","volume":"154","author":"Lin","year":"2017","journal-title":"Glob. Planet. Chang."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"163","DOI":"10.1016\/j.agrformet.2017.11.034","article-title":"Contrasting responses of grassland water and carbon exchanges to climate change between Tibetan Plateau and Inner Mongolia","volume":"249","author":"Liu","year":"2018","journal-title":"Agric. For. Meteorol."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"381","DOI":"10.1016\/j.agrformet.2007.09.010","article-title":"Spring drought regulates summer net ecosystem CO2 exchange in a sagebrush-steppe ecosystem","volume":"148","author":"Kwon","year":"2008","journal-title":"Agric. For. Meteorol."},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"791","DOI":"10.5194\/bg-4-791-2007","article-title":"Net ecosystem carbon exchange in three contrasting Mediterranean ecosystems\u2014The effect of drought","volume":"4","author":"Pereira","year":"2007","journal-title":"Biogeosciences"},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"1504","DOI":"10.1029\/2011JG001832","article-title":"Upscaling carbon fluxes over the Great Plains grasslands: Sinks and sources","volume":"116","author":"Zhang","year":"2011","journal-title":"J. Geophys. Res. Biogeosci."},{"key":"ref_27","doi-asserted-by":"crossref","unstructured":"Liu, S., Zhang, F., Du, Y., Guo, X., Lin, L., Li, Y., Li, Q., and Cao, G.J.P.O. (2016). Ecosystem Carbon Storage in Alpine Grassland on the Qinghai Plateau. PLoS ONE, 11.","DOI":"10.1371\/journal.pone.0160420"},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"108021","DOI":"10.1016\/j.agrformet.2020.108021","article-title":"Net ecosystem carbon budget of a grassland ecosystem in central Qinghai-Tibet Plateau: Integrating terrestrial and aquatic carbon fluxes at catchment scale","volume":"290","author":"Song","year":"2020","journal-title":"Agric. For. Meteorol."},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"283","DOI":"10.1016\/j.agrformet.2019.06.003","article-title":"Water and carbon dioxide exchange of an alpine meadow ecosystem in the northeastern Tibetan Plateau is energy-limited","volume":"275","author":"Sun","year":"2019","journal-title":"Agric. For. Meteorol."},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"e2015283118","DOI":"10.1073\/pnas.2015283118","article-title":"Plant uptake of CO2 outpaces losses from permafrost and plant respiration on the Tibetan Plateau","volume":"118","author":"Wei","year":"2021","journal-title":"Proc. Natl. Acad. Sci. USA"},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"105168","DOI":"10.1016\/j.catena.2021.105168","article-title":"Warming could shift steppes to carbon sinks and meadows to carbon sources in permafrost regions: Evidence from the improved IBIS model","volume":"200","author":"Ma","year":"2021","journal-title":"CATENA"},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"1207","DOI":"10.5194\/bg-7-1207-2010","article-title":"Seasonal variations in carbon dioxide exchange in an alpine wetland meadow on the Qinghai-Tibetan Plateau","volume":"7","author":"Zhao","year":"2010","journal-title":"Biogeosciences"},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"14769","DOI":"10.1073\/pnas.1103910108","article-title":"Permafrost carbon-climate feedbacks accelerate global warming","volume":"108","author":"Koven","year":"2011","journal-title":"Proc. Natl. Acad. Sci. USA"},{"key":"ref_34","doi-asserted-by":"crossref","first-page":"121","DOI":"10.1016\/j.agrformet.2003.12.008","article-title":"Carbon dioxide exchange between the atmosphere and an alpine meadow ecosystem on the Qinghai\u2013Tibetan Plateau, China","volume":"124","author":"Kato","year":"2004","journal-title":"Agric. For. Meteorol."},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"169","DOI":"10.1093\/jpe\/rtp026","article-title":"Foreword to the special issue: Looking into the impacts of global warming from the roof of the world","volume":"2","author":"Tang","year":"2009","journal-title":"J. Plant Ecol."},{"key":"ref_36","doi-asserted-by":"crossref","first-page":"125","DOI":"10.1016\/0304-3800(88)90112-3","article-title":"A general model of forest ecosystem processes for regional applications I. Hydrologic balance, canopy gas exchange and primary production processes","volume":"42","author":"Running","year":"1988","journal-title":"Ecol. Model."},{"key":"ref_37","doi-asserted-by":"crossref","first-page":"158","DOI":"10.1016\/S0034-4257(97)00089-8","article-title":"A process-based boreal ecosystem productivity simulator using remote sensing inputs","volume":"62","author":"Liu","year":"1997","journal-title":"Remote Sens. Environ."},{"key":"ref_38","doi-asserted-by":"crossref","first-page":"1221","DOI":"10.1016\/j.agwat.2009.12.007","article-title":"Combining an ecological model with remote sensing and GIS techniques to monitor soil water content of croplands with a monsoon climate","volume":"97","author":"Ju","year":"2010","journal-title":"Agric. Water Manag."},{"key":"ref_39","doi-asserted-by":"crossref","first-page":"99","DOI":"10.1016\/S0304-3800(99)00156-8","article-title":"Daily canopy photosynthesis model through temporal and spatial scaling for remote sensing applications","volume":"124","author":"Chen","year":"1999","journal-title":"Ecol. Model."},{"key":"ref_40","doi-asserted-by":"crossref","first-page":"78","DOI":"10.1007\/BF00386231","article-title":"A biochemical model of photosynthetic CO2 assimilation in leaves of C3 species","volume":"149","author":"Farquhar","year":"1980","journal-title":"Planta"},{"key":"ref_41","doi-asserted-by":"crossref","first-page":"4259","DOI":"10.1038\/s41467-019-12257-8","article-title":"Vegetation structural change since 1981 significantly enhanced the terrestrial carbon sink","volume":"10","author":"Chen","year":"2019","journal-title":"Nat. Commun."},{"key":"ref_42","doi-asserted-by":"crossref","first-page":"3996","DOI":"10.1029\/2010GB003996","article-title":"Effects of foliage clumping on the estimation of global terrestrial gross primary productivity","volume":"26","author":"Chen","year":"2012","journal-title":"Glob. Biogeochem. Cycles"},{"key":"ref_43","doi-asserted-by":"crossref","first-page":"563","DOI":"10.1016\/j.jenvman.2006.09.021","article-title":"Net primary productivity of China\u2019s terrestrial ecosystems from a process model driven by remote sensing","volume":"85","author":"Feng","year":"2007","journal-title":"J. Environ. Manag."},{"key":"ref_44","doi-asserted-by":"crossref","first-page":"174","DOI":"10.1016\/j.rse.2017.12.024","article-title":"Satellite-derived LAI products exhibit large discrepancies and can lead to substantial uncertainty in simulated carbon and water fluxes","volume":"206","author":"Liu","year":"2018","journal-title":"Remote Sens. Environ."},{"key":"ref_45","doi-asserted-by":"crossref","first-page":"25","DOI":"10.1038\/s41597-020-0369-y","article-title":"The first high-resolution meteorological forcing dataset for land process studies over China","volume":"7","author":"He","year":"2020","journal-title":"Sci. Data"},{"key":"ref_46","unstructured":"He, J., and Yang, K. (2021, December 10). China meteorological forcing dataset (1979\u20132018). National Tibetan Plateau Data Center. Available online: http:\/\/data.tpdc.ac.cn\/en\/data\/8028b944-daaa-4511-8769-965612652c49\/."},{"key":"ref_47","doi-asserted-by":"crossref","first-page":"38","DOI":"10.1016\/j.agrformet.2009.08.004","article-title":"On downward shortwave and longwave radiations over high altitude regions: Observation and modeling in the Tibetan Plateau","volume":"150","author":"Yang","year":"2010","journal-title":"Agric. For. Meteorol."},{"key":"ref_48","doi-asserted-by":"crossref","first-page":"115","DOI":"10.1046\/j.1466-822X.2002.00278.x","article-title":"Net primary productivity mapped for Canada at 1-km resolution","volume":"11","author":"Liu","year":"2002","journal-title":"Glob. Ecol. Biogeogr."},{"key":"ref_49","doi-asserted-by":"crossref","first-page":"118","DOI":"10.1016\/j.rse.2011.12.008","article-title":"Global clumping index map derived from the MODIS BRDF product","volume":"119","author":"He","year":"2012","journal-title":"Remote Sens. Environ."},{"key":"ref_50","doi-asserted-by":"crossref","first-page":"785","DOI":"10.1029\/93GB02042","article-title":"Observations and modeling of biomass and soil organic-matter dynamics for the grassland biome worldwide","volume":"7","author":"Parton","year":"1993","journal-title":"Glob. Biogeochem. Cycles"},{"key":"ref_51","doi-asserted-by":"crossref","first-page":"e2020JG005944","DOI":"10.1029\/2020JG005944","article-title":"Drought Risk of Global Terrestrial Gross Primary Productivity Over the Last 40 Years Detected by a Remote Sensing-Driven Process Model","volume":"126","author":"He","year":"2021","journal-title":"J. Geophys. Res. Biogeosci."},{"key":"ref_52","doi-asserted-by":"crossref","first-page":"e2019JG005020","DOI":"10.1029\/2019JG005020","article-title":"Estimation of Leaf Photosynthetic Capacity from Leaf Chlorophyll Content and Leaf Age in a Subtropical Evergreen Coniferous Plantation","volume":"125","author":"Wang","year":"2020","journal-title":"J. Geophys. Res. Biogeosci."},{"key":"ref_53","doi-asserted-by":"crossref","unstructured":"Ji, R., Tan, K., Wang, X., Pan, C., and Xin, L. (2021). Spatiotemporal Monitoring of a Grassland Ecosystem and Its Net Primary Production Using Google Earth Engine: A Case Study of Inner Mongolia from 2000 to 2020. Remote Sens., 13.","DOI":"10.3390\/rs13214480"},{"key":"ref_54","doi-asserted-by":"crossref","first-page":"117","DOI":"10.1016\/j.ecolind.2014.07.031","article-title":"Spatio-temporal analysis of vegetation variation in the Yellow River Basin","volume":"51","author":"Jiang","year":"2015","journal-title":"Ecol. Indic."},{"key":"ref_55","doi-asserted-by":"crossref","first-page":"1379","DOI":"10.1080\/01621459.1968.10480934","article-title":"Estimates of the Regression Coefficient Based on Kendall\u2019s Tau","volume":"63","author":"Sen","year":"1968","journal-title":"J. Am. Stat. Assoc."},{"key":"ref_56","unstructured":"Kendall, M.G. (1975). Rank Correlation Methods, Griffin. [4th ed.]."},{"key":"ref_57","first-page":"386","article-title":"A rank-invariant method of linear and polynomial regression analysis","volume":"53","author":"Theil","year":"1950","journal-title":"Indag. Math."},{"key":"ref_58","doi-asserted-by":"crossref","first-page":"1556","DOI":"10.21105\/joss.01556","article-title":"pyMannKendall: A python package for non parametric Mann Kendall family of trend tests","volume":"4","author":"Hussain","year":"2019","journal-title":"J. Open Source Softw."},{"key":"ref_59","doi-asserted-by":"crossref","first-page":"718","DOI":"10.1007\/s10661-020-08667-7","article-title":"Spatial\u2013temporal analysis of net primary production (NPP) and its relationship with climatic factors in Iran","volume":"192","author":"Kamali","year":"2020","journal-title":"Environ. Monit. Assess."},{"key":"ref_60","doi-asserted-by":"crossref","first-page":"375","DOI":"10.1016\/j.rse.2015.08.024","article-title":"A time series processing tool to extract climate-driven interannual vegetation dynamics using Ensemble Empirical Mode Decomposition (EEMD)","volume":"169","author":"Hawinkel","year":"2015","journal-title":"Remote Sens. Environ."},{"key":"ref_61","doi-asserted-by":"crossref","first-page":"14889","DOI":"10.1073\/pnas.0701020104","article-title":"On the trend, detrending, and variability of nonlinear and nonstationary time series","volume":"104","author":"Wu","year":"2007","journal-title":"Proc. Natl. Acad. Sci. USA"},{"key":"ref_62","doi-asserted-by":"crossref","unstructured":"Jiao, F., Liu, H., Xu, X., Gong, H., and Lin, Z. (2020). Trend Evolution of Vegetation Phenology in China during the Period of 1981\u20132016. Remote Sens., 12.","DOI":"10.3390\/rs12030572"},{"key":"ref_63","doi-asserted-by":"crossref","unstructured":"Xue, P., Liu, H., Zhang, M., Gong, H., and Cao, L. (2022). Nonlinear Characteristics of NPP Based on Ensemble Empirical Mode Decomposition from 1982 to 2015\u2014A Case Study of Six Coastal Provinces in Southeast China. Remote Sens., 14.","DOI":"10.3390\/rs14010015"},{"key":"ref_64","doi-asserted-by":"crossref","first-page":"124009","DOI":"10.1088\/1748-9326\/ab4cd8","article-title":"Changes in the trends of vegetation net primary productivity in China between 1982 and 2015","volume":"14","author":"Feng","year":"2019","journal-title":"Environ. Res. Lett."},{"key":"ref_65","doi-asserted-by":"crossref","first-page":"505","DOI":"10.1093\/nsr\/nwz021","article-title":"Altered trends in carbon uptake in China\u2019s terrestrial ecosystems under the enhanced summer monsoon and warming hiatus","volume":"6","author":"He","year":"2019","journal-title":"Natl. Sci. Rev."},{"key":"ref_66","doi-asserted-by":"crossref","first-page":"1416","DOI":"10.1016\/j.rse.2010.01.022","article-title":"Global estimates of evapotranspiration and gross primary production based on MODIS and global meteorology data","volume":"114","author":"Yuan","year":"2010","journal-title":"Remote Sens. Environ."},{"key":"ref_67","doi-asserted-by":"crossref","first-page":"2725","DOI":"10.5194\/essd-12-2725-2020","article-title":"Improved estimate of global gross primary production for reproducing its long-term variation, 1982\u20132017","volume":"12","author":"Zheng","year":"2020","journal-title":"Earth Syst. Sci. Data"},{"key":"ref_68","doi-asserted-by":"crossref","unstructured":"Guo, D., Song, X., Hu, R., Zhu, X., Jiang, Y., Cai, S., Zhang, Y., and Cui, X. (2021). Large-Scale Analysis of the Spatiotemporal Changes of Net Ecosystem Production in Hindu Kush Himalayan Region. Remote Sens., 13.","DOI":"10.3390\/rs13061180"},{"key":"ref_69","doi-asserted-by":"crossref","first-page":"775015","DOI":"10.3389\/fpls.2021.775015","article-title":"Spatiotemporal Dynamics of the Carbon Budget and the Response to Grazing in Qinghai Grasslands","volume":"12","author":"Huang","year":"2022","journal-title":"Front. Plant Sci."},{"key":"ref_70","doi-asserted-by":"crossref","first-page":"73","DOI":"10.1016\/j.gloplacha.2012.08.009","article-title":"Impacts of climate and CO2 changes on the vegetation growth and carbon balance of Qinghai\u2013Tibetan grasslands over the past five decades","volume":"98\u201399","author":"Piao","year":"2012","journal-title":"Glob. Planet. Chang."},{"key":"ref_71","doi-asserted-by":"crossref","first-page":"195","DOI":"10.1016\/j.jclepro.2015.04.140","article-title":"The spatial and temporal dynamics of carbon budget in the alpine grasslands on the Qinghai-Tibetan Plateau using the Terrestrial Ecosystem Model","volume":"107","author":"Yan","year":"2015","journal-title":"J. Clean. Prod."},{"key":"ref_72","doi-asserted-by":"crossref","first-page":"649","DOI":"10.1111\/j.1466-8238.2010.00559.x","article-title":"Carbon dynamics of terrestrial ecosystems on the Tibetan Plateau during the 20th century: An analysis with a process-based biogeochemical model","volume":"19","author":"Zhuang","year":"2010","journal-title":"Glob. Ecol. Biogeogr."},{"key":"ref_73","doi-asserted-by":"crossref","first-page":"1599","DOI":"10.1016\/j.agrformet.2011.06.016","article-title":"Altitude and temperature dependence of change in the spring vegetation green-up date from 1982 to 2006 in the Qinghai-Xizang Plateau","volume":"151","author":"Piao","year":"2011","journal-title":"Agric. For. Meteorol."},{"key":"ref_74","first-page":"528","article-title":"High positive correlation between soil temperature and NDVI from 1982 to 2006 in alpine meadow of the Three-River Source Region on the Qinghai-Tibetan Plateau","volume":"13","author":"Xu","year":"2011","journal-title":"Int. J. Appl. Earth Obs. Geoinf."},{"key":"ref_75","doi-asserted-by":"crossref","first-page":"915","DOI":"10.1007\/s11434-008-0115-x","article-title":"Spatiotemporal vegetation cover variations in the Qinghai-Tibet Plateau under global climate change","volume":"53","author":"Xu","year":"2008","journal-title":"Chin. Sci. Bull."},{"key":"ref_76","doi-asserted-by":"crossref","first-page":"210","DOI":"10.1016\/j.scitotenv.2016.03.223","article-title":"Vegetation dynamics and its driving forces from climate change and human activities in the Three-River Source Region, China from 1982 to 2012","volume":"563\u2013564","author":"Zhang","year":"2016","journal-title":"Sci. Total Environ."},{"key":"ref_77","doi-asserted-by":"crossref","first-page":"571","DOI":"10.1007\/s10661-009-1258-1","article-title":"Assessment of effects of climate change and grazing activity on grassland yield in the Three Rivers Headwaters Region of Qinghai\u2013Tibet Plateau, China","volume":"170","author":"Fan","year":"2010","journal-title":"Environ. Monit. Assess."},{"key":"ref_78","doi-asserted-by":"crossref","unstructured":"Zhang, Y., Zhang, C., Wang, Z., An, R., and Li, J. (2019). Comprehensive Research on Remote Sensing Monitoring of Grassland Degradation: A Case Study in the Three-River Source Region, China. Sustainability, 11.","DOI":"10.3390\/su11071845"},{"key":"ref_79","doi-asserted-by":"crossref","first-page":"269","DOI":"10.1007\/s11442-014-1087-1","article-title":"Spatial and temporal variability in the net primary production of alpine grassland on the Tibetan Plateau since 1982","volume":"24","author":"Zhang","year":"2014","journal-title":"J. Geogr. Sci."},{"key":"ref_80","doi-asserted-by":"crossref","first-page":"187","DOI":"10.1093\/jpe\/rtp027","article-title":"Characterization of CO2 flux in three Kobresia meadows differing in dominant species","volume":"2","author":"Zhang","year":"2009","journal-title":"J. Plant Ecol."},{"key":"ref_81","doi-asserted-by":"crossref","first-page":"1837","DOI":"10.1007\/s00382-020-05563-1","article-title":"Decadal change and inter-annual variability of net primary productivity on the Tibetan Plateau","volume":"56","author":"Cuo","year":"2021","journal-title":"Clim. Dyn."},{"key":"ref_82","first-page":"379","article-title":"Climatic Changes Dominant Interannual Trend in Net Primary Productivity of Alpine Vulnerable Ecosystems","volume":"10","author":"Yihan","year":"2019","journal-title":"J. Resour. Ecol."},{"key":"ref_83","doi-asserted-by":"crossref","first-page":"22","DOI":"10.1016\/j.agrformet.2018.02.027","article-title":"Water availability is more important than temperature in driving the carbon fluxes of an alpine meadow on the Tibetan Plateau","volume":"256\u2013257","author":"Zhang","year":"2018","journal-title":"Agric. For. Meteorol."},{"key":"ref_84","doi-asserted-by":"crossref","first-page":"1745","DOI":"10.1007\/BF02883978","article-title":"New evidence for the Qinghai-Xizang (Tibet) Plateau as a pilot region of climatic fluctuation in China","volume":"43","author":"Feng","year":"1998","journal-title":"Chin. Sci. Bull."},{"key":"ref_85","doi-asserted-by":"crossref","unstructured":"Zhang, Y., Hu, Q., and Zou, F. (2021). Spatio-Temporal Changes of Vegetation Net Primary Productivity and Its Driving Factors on the Qinghai-Tibetan Plateau from 2001 to 2017. Remote Sens., 13.","DOI":"10.3390\/rs13081566"},{"key":"ref_86","doi-asserted-by":"crossref","first-page":"3471","DOI":"10.1007\/s00382-018-4326-9","article-title":"Enhanced connections between summer precipitation over the Three-River-Source region of China and the global climate system","volume":"52","author":"Sun","year":"2019","journal-title":"Clim. Dyn."},{"key":"ref_87","doi-asserted-by":"crossref","first-page":"2140","DOI":"10.1890\/07-0992.1","article-title":"Primary production and rain use efficiency across a precipitation gradient on the Mongolia plateau","volume":"89","author":"Bai","year":"2008","journal-title":"Ecology"},{"key":"ref_88","doi-asserted-by":"crossref","first-page":"129","DOI":"10.1007\/s00442-008-1116-9","article-title":"Increasing precipitation event size increases aboveground net primary productivity in a semi-arid grassland","volume":"158","author":"Knapp","year":"2008","journal-title":"Oecologia"},{"key":"ref_89","doi-asserted-by":"crossref","first-page":"1990","DOI":"10.1111\/j.1365-2486.2010.02365.x","article-title":"Water regulated effects of photosynthetic substrate supply on soil respiration in a semiarid steppe","volume":"17","author":"Yan","year":"2011","journal-title":"Glob. Chang. Biol."},{"key":"ref_90","doi-asserted-by":"crossref","first-page":"687","DOI":"10.1002\/joc.4013","article-title":"NDVI and vegetation phenology dynamics under the influence of sunshine duration on the Tibetan plateau","volume":"35","author":"Wang","year":"2015","journal-title":"Int. J. Climatol."},{"key":"ref_91","doi-asserted-by":"crossref","first-page":"1566","DOI":"10.1029\/2010JG001566","article-title":"Global patterns of land-atmosphere fluxes of carbon dioxide, latent heat, and sensible heat derived from eddy covariance, satellite, and meteorological observations","volume":"116","author":"Jung","year":"2011","journal-title":"J. Geophys. Res. Biogeosci."},{"key":"ref_92","doi-asserted-by":"crossref","first-page":"1009","DOI":"10.1038\/nature07944","article-title":"The carbon balance of terrestrial ecosystems in China","volume":"458","author":"Piao","year":"2009","journal-title":"Nature"},{"key":"ref_93","doi-asserted-by":"crossref","first-page":"71","DOI":"10.17520\/biods.2016098","article-title":"Identification of functional zones and methods of target management in Sanjiangyuan National Park","volume":"25","author":"Fu","year":"2017","journal-title":"Biodivers. Sci."},{"key":"ref_94","doi-asserted-by":"crossref","first-page":"149","DOI":"10.1142\/9789812703347_0007","article-title":"Empirical Mode Decomposition and Climate Variability","volume":"Volume 5","author":"Coughlin","year":"2005","journal-title":"Hilbert-Huang Transform and Its Applications"}],"container-title":["Remote Sensing"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2072-4292\/14\/19\/4795\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T00:39:32Z","timestamp":1760143172000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2072-4292\/14\/19\/4795"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2022,9,26]]},"references-count":94,"journal-issue":{"issue":"19","published-online":{"date-parts":[[2022,10]]}},"alternative-id":["rs14194795"],"URL":"https:\/\/doi.org\/10.3390\/rs14194795","relation":{},"ISSN":["2072-4292"],"issn-type":[{"type":"electronic","value":"2072-4292"}],"subject":[],"published":{"date-parts":[[2022,9,26]]}}}