{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,4]],"date-time":"2026-04-04T03:23:36Z","timestamp":1775273016494,"version":"3.50.1"},"reference-count":66,"publisher":"MDPI AG","issue":"1","license":[{"start":{"date-parts":[[2015,12,24]],"date-time":"2015-12-24T00:00:00Z","timestamp":1450915200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>Lack of research into the complexity in urban land conversion, and paucity of observational data of soil organic carbon (SOC) beneath impervious surface area (ISA) limit our understanding of the urbanization effects on carbon (C) pools in dryland cities. Employing Landsat TM images acquired in 1990 and 2010, a hybrid classification method consisting of Linear Spectral Mixture Analysis and decision tree classification was applied to retrieve the land cover (water, ISA, greenspace, cropland, and remnant desert) of the largest dryland city in China\u2014Urumqi. Based on vegetation carbon (VEGC) and SOC density data determined through field observations and literature reviews, we developed Urumqi\u2019s C pool maps in 1990 and 2010, and assessed the urbanization impacts on ecosystem C. Our results showed that ISA tripled from 1990 to 2010 displacing remnant desert and cropland. The urban landscape, especially the greenspaces, became obviously fragmented. In 2010, more than 95% of the urban ecosystem C was SOC, 48% of which under the ISA. The city lost 19% of C stock from 1990 to 2010. About 82% of the ecosystem C loss was caused by the conversion of remnant desert and cropland into ISA, mainly in the northern city.<\/jats:p>","DOI":"10.3390\/rs8010006","type":"journal-article","created":{"date-parts":[[2015,12,24]],"date-time":"2015-12-24T10:03:53Z","timestamp":1450951433000},"page":"6","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":42,"title":["Urban Land-Cover Change and Its Impact on the Ecosystem Carbon Storage in a Dryland City"],"prefix":"10.3390","volume":"8","author":[{"given":"Yan","family":"Yan","sequence":"first","affiliation":[{"name":"State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China"},{"name":"University of Chinese Academy of Sciences, Beijing 100049, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4866-1441","authenticated-orcid":false,"given":"Chi","family":"Zhang","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China"},{"name":"School of Resources Environment Science and Engineering, Hubei University of Science and Technology, Xianning 437100, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6219-6251","authenticated-orcid":false,"given":"Yunfeng","family":"Hu","sequence":"additional","affiliation":[{"name":"Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China"}]},{"given":"Wenhui","family":"Kuang","sequence":"additional","affiliation":[{"name":"Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China"}]}],"member":"1968","published-online":{"date-parts":[[2015,12,24]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"16083","DOI":"10.1073\/pnas.1211658109","article-title":"Global forecasts of urban expansion to 2030 and direct impacts on biodiversity and carbon pools","volume":"109","author":"Seto","year":"2012","journal-title":"Proc. Natl. Acad. Sci. USA"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"295","DOI":"10.1016\/j.ecolmodel.2003.09.022","article-title":"Urbanised territories as a specific component of the global carbon cycle","volume":"173","author":"Schellnhuber","year":"2004","journal-title":"Ecol. Model."},{"key":"ref_3","doi-asserted-by":"crossref","unstructured":"Seto, K.C., Fragkias, M., Guneralp, B., and Reilly, M.K. (2011). A meta-analysis of global urban land expansion. PLoS ONE, 6.","DOI":"10.1371\/journal.pone.0023777"},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"689","DOI":"10.1016\/j.rse.2012.06.006","article-title":"Monitoring land cover change in urban and pen-urban areas using dense time stacks of landsat satellite data and a data mining approach","volume":"124","author":"Schneider","year":"2012","journal-title":"Remote Sens. Environ."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"381","DOI":"10.1016\/S0269-7491(01)00214-7","article-title":"Carbon storage and sequestration by urban trees in the USA","volume":"116","author":"Nowak","year":"2002","journal-title":"Environ. Pollut."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"2092","DOI":"10.1111\/j.1365-2486.2006.01242.x","article-title":"Urban ecosystems and the north american carbon cycle","volume":"12","author":"Pataki","year":"2006","journal-title":"Glob. Chang. Biol."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"1566","DOI":"10.2134\/jeq2005.0215","article-title":"Carbon storage by urban soils in the united states","volume":"35","author":"Pouyat","year":"2006","journal-title":"J. Environ. Qual."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"135","DOI":"10.1111\/j.1365-2486.2009.02002.x","article-title":"Carbon stored in human settlements: The conterminous united states","volume":"16","author":"Churkina","year":"2010","journal-title":"Glob. Chang. Biol."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"1125","DOI":"10.1111\/j.1365-2664.2011.02021.x","article-title":"Mapping an urban ecosystem service: Quantifying above-ground carbon storage at a city-wide scale","volume":"48","author":"Davies","year":"2011","journal-title":"J. Appl. Ecol."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"783","DOI":"10.1111\/j.1365-2486.2010.02238.x","article-title":"Terrestrial carbon stocks across a gradient of urbanization: A study of the seattle, wa region","volume":"17","author":"Hutyra","year":"2011","journal-title":"Glob. Chang. Biol."},{"key":"ref_11","doi-asserted-by":"crossref","unstructured":"Edmondson, J.L., Davies, Z.G., McHugh, N., Gaston, K.J., and Leake, J.R. (2012). Organic carbon hidden in urban ecosystems. Sci. Rep., 2.","DOI":"10.1038\/srep00963"},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"756","DOI":"10.1126\/science.1150195","article-title":"Global change and the ecology of cities","volume":"319","author":"Grimm","year":"2008","journal-title":"Science"},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"1505","DOI":"10.5194\/bg-5-1505-2008","article-title":"The response of the terrestrial biosphere to urbanization: Land cover conversion, climate, and urban pollution","volume":"5","author":"Trusilova","year":"2008","journal-title":"Biogeosciences"},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"57","DOI":"10.1016\/j.landurbplan.2014.11.015","article-title":"Land use and land cover changes explain spatial and temporal variations of the soil organic carbon stocks in a constructed urban park","volume":"136","author":"Bae","year":"2015","journal-title":"Landsc. Urban Plan."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"93","DOI":"10.1016\/j.ufug.2006.04.002","article-title":"Institutionalizing urban forestry as a \u201cbiotechnology\u201d to improve environmental quality","volume":"5","author":"Nowak","year":"2006","journal-title":"Urban For. Urban Green."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"308","DOI":"10.1016\/j.landurbplan.2007.05.003","article-title":"Urban form, biodiversity potential and ecosystem services","volume":"83","author":"Tratalos","year":"2007","journal-title":"Landsc. Urban Plan."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"271","DOI":"10.1016\/S0169-2046(01)00160-8","article-title":"Predicting land-cover and land-use change in the urban fringe\u2014A case in morelia city, mexico","volume":"55","author":"Lopez","year":"2001","journal-title":"Landsc. Urban Plan."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"149","DOI":"10.1016\/j.landurbplan.2012.02.016","article-title":"The dynamics of urban expansion and its impacts on land use\/land cover change and small-scale farmers living near the urban fringe: A case study of Bahir Dar, Ethiopia","volume":"106","author":"Haregeweyn","year":"2012","journal-title":"Landsc. Urban Plan."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"4125","DOI":"10.3390\/rs5084125","article-title":"Assessment impacts of weather and land use\/land cover (LULC) change on urban vegetation net primary productivity (NPP): A case study in Guangzhou, China","volume":"5","author":"Fu","year":"2013","journal-title":"Remote Sens."},{"key":"ref_20","doi-asserted-by":"crossref","unstructured":"Dadras, M., Shafri, H.Z.M., Ahmad, N., Pradhan, B., and Safarpour, S. (2014). Land use\/cover change detection and urban sprawl analysis in bandar abbas city, Iran. Sci. World J.","DOI":"10.1155\/2014\/690872"},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"1691","DOI":"10.1007\/s11434-012-5568-2","article-title":"Spatiotemporal dynamics of impervious surface areas across china during the early 21st century","volume":"58","author":"Kuang","year":"2013","journal-title":"Chin. Sci. Bull."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"248","DOI":"10.1016\/j.envpol.2012.01.046","article-title":"Depleted soil carbon and nitrogen pools beneath impervious surfaces","volume":"164","author":"Raciti","year":"2012","journal-title":"Environ. Pollut."},{"key":"ref_23","doi-asserted-by":"crossref","unstructured":"Bell, M.J., Worrall, F., Smith, P., Bhogal, A., Black, H., Lilly, A., Barraclough, D., and Merrington, G. (2011). UK land-use change and its impact on SOC: 1925\u20132007. Glob. Biogeochem. Cycles, 25.","DOI":"10.1029\/2010GB003881"},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"18","DOI":"10.1016\/j.apgeog.2005.10.001","article-title":"Soil carbon stocks and land cover in northern ireland from 1939 to 2000","volume":"26","author":"Tomlinson","year":"2006","journal-title":"Appl. Geogr."},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"505","DOI":"10.1023\/A:1005425807434","article-title":"National inventories of terrestrial carbon sources and sinks: The uk experience","volume":"42","author":"Cannell","year":"1999","journal-title":"Clim. Chang."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"137","DOI":"10.1007\/s10113-007-0034-4","article-title":"Simulating the effects of urbanization, afforestation and cropland abandonment on a regional carbon balance: A case study for central Germany","volume":"7","author":"Schaldach","year":"2007","journal-title":"Reg. Environ. Chang."},{"key":"ref_27","doi-asserted-by":"crossref","unstructured":"Wei, Z.Q., Wu, S.H., Yan, X., and Zhou, S.L. (2014). Density and stability of soil organic carbon beneath impervious surfaces in urban areas. PLoS ONE, 9.","DOI":"10.1371\/journal.pone.0109380"},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"528","DOI":"10.1007\/s00267-003-9110-9","article-title":"Carbon sequestration in dryland ecosystems","volume":"33","author":"Lal","year":"2004","journal-title":"Environ. Manag."},{"key":"ref_29","unstructured":"Urumqi Bureau of Statistics, Available online: http:\/\/www.wlmqtj.gov.cn\/."},{"key":"ref_30","unstructured":"Statistics bureau of Xinjiang Uygur Autonomous region (2013). Xinjiang Statistical Yearbook."},{"key":"ref_31","first-page":"2279","article-title":"Estimation of china soil organic carbon storage and density based on 1:1,000,000 soil database","volume":"16","author":"Yu","year":"2005","journal-title":"Chin. J. Appl. Ecol."},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"13","DOI":"10.1080\/19479832.2013.868372","article-title":"Current situation and needs of change detection techniques","volume":"5","author":"Lu","year":"2014","journal-title":"Int. J. Image Data Fusion"},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"1053","DOI":"10.14358\/PERS.70.9.1053","article-title":"Spectral mixture analysis of the urban landscape in indianapolis with landsat ETM plus imagery","volume":"70","author":"Lu","year":"2004","journal-title":"Photogramm. Eng. Remote Sens."},{"key":"ref_34","doi-asserted-by":"crossref","first-page":"146","DOI":"10.1016\/j.rse.2006.02.010","article-title":"Use of impervious surface in urban land-use classification","volume":"102","author":"Lu","year":"2006","journal-title":"Remote Sens. Environ."},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"89","DOI":"10.1016\/j.envpol.2012.01.020","article-title":"Impacts of urbanization on carbon balance in terrestrial ecosystems of the southern United States","volume":"164","author":"Zhang","year":"2012","journal-title":"Environ. Pollut."},{"key":"ref_36","first-page":"17","article-title":"A review of change detection techniques of landcover using remote sensing data","volume":"17","author":"Ross","year":"2015","journal-title":"IOSR J. Comput. Eng."},{"key":"ref_37","unstructured":"Jensen, J.R. (2005). Introductory Digital Image Processing: A Remote Sensing Perspective, Prentice Hall. [3rd ed.]."},{"key":"ref_38","doi-asserted-by":"crossref","first-page":"327","DOI":"10.1007\/s10661-008-0274-x","article-title":"Post-classification comparison of land cover using multitemporal landsat and aster imagery: The case of kahramanmara angstrom, turkey","volume":"151","author":"Alphan","year":"2009","journal-title":"Environ. Monit. Assess."},{"key":"ref_39","doi-asserted-by":"crossref","first-page":"1226","DOI":"10.1016\/j.rse.2007.08.012","article-title":"Extending post-classification change detection using semantic similarity metrics to overcome class heterogeneity: A study of 1992 and 2001 us national land cover database changes","volume":"112","author":"Ahlqvist","year":"2008","journal-title":"Remote Sens. Environ."},{"key":"ref_40","doi-asserted-by":"crossref","first-page":"149","DOI":"10.1016\/j.rse.2013.03.036","article-title":"Post-classification approaches to estimating change in forest area using remotely sensed auxiliary data","volume":"151","author":"McRoberts","year":"2014","journal-title":"Remote Sens. Environ."},{"key":"ref_41","doi-asserted-by":"crossref","first-page":"4365","DOI":"10.1080\/01431161.2010.486806","article-title":"Pre-classification and post-classification change-detection techniques to monitor land-cover and land-use change using multi-temporal landsat imagery: A case study on pisa province in italy","volume":"32","author":"Peiman","year":"2011","journal-title":"Int. J. Remote Sens."},{"key":"ref_42","doi-asserted-by":"crossref","first-page":"298","DOI":"10.1016\/j.isprsjprs.2010.10.010","article-title":"Detection of impervious surface change with multitemporal landsat images in an urban-rural frontier","volume":"66","author":"Lu","year":"2011","journal-title":"ISPRS J. Photogramm."},{"key":"ref_43","doi-asserted-by":"crossref","first-page":"137","DOI":"10.1016\/0034-4257(94)00098-8","article-title":"Classification of multispectral images based on fractions of endmembers\u2014Application to land-cover change in the brazilian amazon","volume":"52","author":"Adams","year":"1995","journal-title":"Remote Sens. Environ."},{"key":"ref_44","doi-asserted-by":"crossref","first-page":"2165","DOI":"10.1080\/01431169508954549","article-title":"Exploring a V-I-S (vegetation-impervious surface-soil) model for urban ecosystem analysis through remote sensing: Comparative anatomy for cities","volume":"16","author":"Ridd","year":"1995","journal-title":"Int. J. Remote Sens."},{"key":"ref_45","doi-asserted-by":"crossref","first-page":"493","DOI":"10.1016\/S0034-4257(02)00136-0","article-title":"Estimating impervious surface distribution by spectral mixture analysis","volume":"84","author":"Wu","year":"2003","journal-title":"Remote Sens. Environ."},{"key":"ref_46","doi-asserted-by":"crossref","first-page":"4483","DOI":"10.1080\/01431161.2015.1084552","article-title":"Mapping land-cover distribution in arid\/semiarid urban landscapes with landsat thematic mapper imagery","volume":"36","author":"Zhang","year":"2015","journal-title":"Int. J. Remote Sens."},{"key":"ref_47","doi-asserted-by":"crossref","first-page":"483","DOI":"10.1007\/s11442-010-0483-4","article-title":"Spatial patterns and driving forces of land use change in China during the early 21st century","volume":"20","author":"Liu","year":"2010","journal-title":"J. Geogr. Sci."},{"key":"ref_48","doi-asserted-by":"crossref","first-page":"111","DOI":"10.1080\/01431161.2010.541950","article-title":"Impact of sample size allocation when using stratified random sampling to estimate accuracy and area of land-cover change","volume":"3","author":"Stehman","year":"2012","journal-title":"Remote Sens. Lett."},{"key":"ref_49","doi-asserted-by":"crossref","first-page":"35","DOI":"10.1016\/0034-4257(91)90048-B","article-title":"A review of assessing the accuracy of classifications of remotely sensed data","volume":"37","author":"Congalton","year":"1991","journal-title":"Remote Sens. Environ."},{"key":"ref_50","doi-asserted-by":"crossref","first-page":"1461","DOI":"10.1080\/014311699212560","article-title":"Quality assessment of image classification algorithms for land-cover mapping: A review and a proposal for a cost-based approach","volume":"20","author":"Smits","year":"1999","journal-title":"Int. J. Remote Sens."},{"key":"ref_51","doi-asserted-by":"crossref","first-page":"185","DOI":"10.1016\/S0034-4257(01)00295-4","article-title":"Status of land cover classification accuracy assessment","volume":"80","author":"Foody","year":"2002","journal-title":"Remote Sens. Environ."},{"key":"ref_52","doi-asserted-by":"crossref","first-page":"2455","DOI":"10.1016\/j.rse.2009.07.006","article-title":"Model-assisted estimation as a unifying framework for estimating the area of land cover and land-cover change from remote sensing","volume":"113","author":"Stehman","year":"2009","journal-title":"Remote Sens. Environ."},{"key":"ref_53","doi-asserted-by":"crossref","first-page":"29","DOI":"10.1016\/0034-4257(92)90138-A","article-title":"Calibration of remotely sensed proportion or area estimates for misclassification error","volume":"39","author":"Czaplewski","year":"1992","journal-title":"Remote Sens. Environ."},{"key":"ref_54","unstructured":"Fragstats v4: Spatial Pattern Analysis Program for Categorical and Continuous Maps. Available online: http:\/\/www.umass.edu\/landeco\/research\/fragstats\/fragstats.html."},{"key":"ref_55","doi-asserted-by":"crossref","unstructured":"Black, C.A., Evans, D.D., Ensminger, L.E., White, J.L., and Clark, F.E. (1965). Methods of Soil Analysis. Part 2. Chemical and Microbiological Properties, American Society of Agronomy, Soil Science Society of America.","DOI":"10.2134\/agronmonogr9.1"},{"key":"ref_56","doi-asserted-by":"crossref","first-page":"129","DOI":"10.2136\/sh2004.4.0129","article-title":"Soil database of 1:1,000,000 digital soil survey and reference system of the chinese genetic soil classification system","volume":"45","author":"Shi","year":"2004","journal-title":"Soil Surv. Horiz."},{"key":"ref_57","unstructured":"Yan, S. (2013). Vegetation Structure Characteristics and Carbon Uptake of Urban Built-Up Area in China, Zhejiang University."},{"key":"ref_58","first-page":"1987","article-title":"Sources and sinks of carbon from forest land use change in xinjiang, china during 1975\u20132005","volume":"32","author":"Chen","year":"2013","journal-title":"Geogr. Res."},{"key":"ref_59","doi-asserted-by":"crossref","unstructured":"Canadell, J., Pataki, D., and Pitelka, L. (2007). Terrestrial Ecosystems in a Changing World, Springer.","DOI":"10.1007\/978-3-540-32730-1"},{"key":"ref_60","first-page":"12","article-title":"A risk analysis system for alien species in urban green spaces and application to the 2010 expo, Shanghai","volume":"20","author":"Ju","year":"2012","journal-title":"Biodivers. Sci."},{"key":"ref_61","doi-asserted-by":"crossref","first-page":"342","DOI":"10.3390\/land3010342","article-title":"Urban landscape perspectives","volume":"3","author":"Steiner","year":"2014","journal-title":"Land"},{"key":"ref_62","doi-asserted-by":"crossref","first-page":"38","DOI":"10.1016\/j.soilbio.2013.06.022","article-title":"Changes in soil carbon pools and microbial biomass from urban land development and subsequent post-development soil rehabilitation","volume":"66","author":"Chen","year":"2013","journal-title":"Soil Biol. Biochem."},{"key":"ref_63","doi-asserted-by":"crossref","first-page":"7107","DOI":"10.5194\/bg-11-7107-2014","article-title":"Multi-factor controls on terrestrial carbon dynamics in urbanized areas","volume":"11","author":"Zhang","year":"2014","journal-title":"Biogeosciences"},{"key":"ref_64","doi-asserted-by":"crossref","first-page":"432","DOI":"10.1016\/j.forpol.2010.05.002","article-title":"Urban forests\u2019 potential to supply marketable carbon emission offsets: A survey of municipal governments in the United States","volume":"12","author":"Poudyal","year":"2010","journal-title":"For. Policy Econ."},{"key":"ref_65","unstructured":"Wu, J.G. (2008). Ecology, Planning, and Management of Urban Forests, Springer."},{"key":"ref_66","doi-asserted-by":"crossref","first-page":"31","DOI":"10.1016\/S0167-8809(02)00013-0","article-title":"An overview of spatial sampling procedures and experimental design of spatial studies for ecosystem comparisons","volume":"94","author":"Stein","year":"2003","journal-title":"Agric. Ecosyst. Environ."}],"container-title":["Remote Sensing"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2072-4292\/8\/1\/6\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T20:54:45Z","timestamp":1760216085000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2072-4292\/8\/1\/6"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2015,12,24]]},"references-count":66,"journal-issue":{"issue":"1","published-online":{"date-parts":[[2016,1]]}},"alternative-id":["rs8010006"],"URL":"https:\/\/doi.org\/10.3390\/rs8010006","relation":{},"ISSN":["2072-4292"],"issn-type":[{"value":"2072-4292","type":"electronic"}],"subject":[],"published":{"date-parts":[[2015,12,24]]}}}