{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,11]],"date-time":"2026-04-11T08:14:39Z","timestamp":1775895279424,"version":"3.50.1"},"reference-count":45,"publisher":"MDPI AG","issue":"8","license":[{"start":{"date-parts":[[2021,4,16]],"date-time":"2021-04-16T00:00:00Z","timestamp":1618531200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"the National Natural Science Foundation of China","award":["41790445"],"award-info":[{"award-number":["41790445"]}]},{"name":"the National Natural Science Foundation of China","award":["41630640"],"award-info":[{"award-number":["41630640"]}]},{"name":"the Science Fund for Creative Research Groups of the National Natural Science Foundation of China","award":["41521002"],"award-info":[{"award-number":["41521002"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>A mega project, Mountain Excavation and City Construction (MECC), was launched in the hilly and gully region of the Chinese Loess Plateau in 2012, in order to address the shortage of available land and create new flat land for urban construction. However, large-scale land creation and urban expansion significantly alters the local geological environment, leading to severe ground deformation. This study investigated the topographic changes, ground deformation, and their interactions due to the MECC project in the Yan\u2019an New District (YND). First, new surface elevations were generated using ZiYuan-3 (ZY-3) stereo images acquired after the construction in order to map the local topographic changes and the fill thickness associated with the MECC project. Then, the interferometric synthetic aperture radar (InSAR) time series and 32 Sentinel-1A images were used to assess the spatial patterns of the ground deformation in the YND during the postconstruction period (2017\u20132018). By combining the InSAR-derived results and topographic change features, the relationship between the ground deformation and large-scale land creation was further analyzed. The results indicated that the MECC project in the YND has created over 22 km2 of flat land, including 10.8 km2 of filled area, with a maximum fill thickness of ~110 m. Significant uneven ground deformation was detected in the land-creation area, with a maximum subsidence rate of approximately 121 mm\/year, which was consistent with the field survey. The strong correlation between the observed subsidence patterns and the land creation project suggested that this recorded uneven subsidence was primarily related to the spatial distribution of the filling works, along with the changes in the thickness and geotechnical properties of the filled loess; moreover, rapid urbanization, such as road construction, can accelerate the subsidence process. These findings can guide improvements in urban planning and the mitigation of geohazards in regions experiencing large-scale land construction.<\/jats:p>","DOI":"10.3390\/rs13081556","type":"journal-article","created":{"date-parts":[[2021,4,19]],"date-time":"2021-04-19T06:35:53Z","timestamp":1618814153000},"page":"1556","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":33,"title":["Characterizing the Topographic Changes and Land Subsidence Associated with the Mountain Excavation and City Construction on the Chinese Loess Plateau"],"prefix":"10.3390","volume":"13","author":[{"given":"Chuanhao","family":"Pu","sequence":"first","affiliation":[{"name":"State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Qiang","family":"Xu","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kuanyao","family":"Zhao","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yanan","family":"Jiang","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lina","family":"Hao","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jialiang","family":"Liu","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Wanlin","family":"Chen","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Pinglang","family":"Kou","sequence":"additional","affiliation":[{"name":"The Chongqing Engineering Research Center for Spatial Big Data Intelligent Technology, Chongqing University of Posts and Telecommunications, Chongqing 400065, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2021,4,16]]},"reference":[{"key":"ref_1","unstructured":"Liu, T. (1985). Loess and the Environment, Science Press. (In Chinese)."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"29","DOI":"10.1038\/510029a","article-title":"Accelerate research on land creation","volume":"510","author":"Li","year":"2014","journal-title":"Nature"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"139721","DOI":"10.1016\/j.scitotenv.2020.139721","article-title":"Micro-topographic assessment of rill morphology highlights the shortcomings of current protective measures in loess landscapes","volume":"737","author":"Kou","year":"2020","journal-title":"Sci. Total Environ."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"106633","DOI":"10.1016\/j.ecolind.2020.106633","article-title":"Spatial analysis of land-use management for gully land consolidation on the Loess Plateau in China","volume":"117","author":"Chen","year":"2020","journal-title":"Ecol. Indic."},{"key":"ref_5","doi-asserted-by":"crossref","unstructured":"Wu, Q., Jia, C., Chen, S., and Li, H. (2019). SBAS-InSAR based deformation detection of urban land, created from mega-scale mountain excavating and valley filling in the Loess Plateau: The case study of Yan\u2019an City. Remote Sens., 11.","DOI":"10.3390\/rs11141673"},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1016\/j.enggeo.2019.01.019","article-title":"Loess geohazards research in China: Advances and challenges for mega engineering projects","volume":"251","author":"Juang","year":"2019","journal-title":"Eng. Geol."},{"key":"ref_7","first-page":"745","article-title":"Settlement behavior and inverse prediction of post-construction settlement of high filled loess embankment","volume":"36","author":"Ge","year":"2017","journal-title":"Chin. J. Rock Mech. Eng."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1029\/2019JB018945","article-title":"The Surge of the Hispar Glacier, Central Karakoram: SAR 3-D Flow Velocity Time Series and Thickness Changes","volume":"125","author":"Guo","year":"2020","journal-title":"J. Geophys. Res. Solid Earth"},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"138868","DOI":"10.1016\/j.scitotenv.2020.138868","article-title":"Inferencing the land subsidence in the Nile Delta using Sentinel-1 satellites and GPS between 2015 and 2019","volume":"729","author":"Rateb","year":"2020","journal-title":"Sci. Total Environ."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"142340","DOI":"10.1016\/j.scitotenv.2020.142340","article-title":"Effects of land use on groundwater recharge of a loess terrace under long-term irrigation","volume":"751","author":"Xu","year":"2021","journal-title":"Sci. Total Environ."},{"key":"ref_11","doi-asserted-by":"crossref","unstructured":"Ren, S., Menenti, M., Jia, L., Zhang, J., Zhang, J., and Li, X. (2020). Glacier mass balance in the Nyainqentanglha mountains between 2000 and 2017 retrieved from ZiYuan-3 stereo images and the SRTM DEM. Remote Sens., 12.","DOI":"10.3390\/rs12050864"},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"111282","DOI":"10.1016\/j.rse.2019.111282","article-title":"Remotely sensing large- and small-scale ground subsidence: A case study of the Guangdong\u2013Hong Kong\u2013Macao Greater Bay Area of China","volume":"232","author":"Ma","year":"2019","journal-title":"Remote Sens. Environ."},{"key":"ref_13","first-page":"1","article-title":"Deformation at longyao ground fissure and its surroundings, north China plain, revealed by ALOS PALSAR PS-InSAR","volume":"67","author":"Yang","year":"2018","journal-title":"Int. J. Appl. Earth Obs. Geoinf."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"111461","DOI":"10.1016\/j.rse.2019.111461","article-title":"InSAR full-resolution analysis of the 2017\u20132018 M>6 earthquakes in Mexico","volume":"234","author":"Atzori","year":"2019","journal-title":"Remote Sens. Environ."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"77","DOI":"10.1016\/j.catena.2019.03.005","article-title":"Monitoring of remedial works performance on landslide-affected areas through ground- and satellite-based techniques","volume":"178","author":"Confuorto","year":"2019","journal-title":"Catena"},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"111695","DOI":"10.1016\/j.rse.2020.111695","article-title":"Retrieval of historical surface displacements of the Baige landslide from time-series SAR observations for retrospective analysis of the collapse event","volume":"240","author":"Li","year":"2020","journal-title":"Remote Sens. Environ."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"14137","DOI":"10.1038\/s41598-019-50792-y","article-title":"Perspectives on the prediction of catastrophic slope failures from satellite InSAR","volume":"9","author":"Intrieri","year":"2019","journal-title":"Sci. Rep."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"112161","DOI":"10.1016\/j.rse.2020.112161","article-title":"Present-day land subsidence rates, surface faulting hazard and risk in Mexico City with 2014\u20132020 Sentinel-1 IW InSAR","volume":"253","author":"Cigna","year":"2021","journal-title":"Remote Sens. Environ."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"3","DOI":"10.1016\/S0013-7952(02)00195-3","article-title":"Monitoring landslides and tectonic motions with the Permanent Scatterers Technique","volume":"68","author":"Colesanti","year":"2003","journal-title":"Eng. Geol."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"8","DOI":"10.1109\/36.898661","article-title":"Permanent scatterers in SAR interferometry","volume":"39","author":"Ferretti","year":"2001","journal-title":"IEEE Trans. Geosci. Remote Sens."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"2202","DOI":"10.1109\/36.868878","article-title":"Nonlinear subsidence rate estimation using permanent scatterers in differential SAR interferometry","volume":"38","author":"Ferretti","year":"2000","journal-title":"IEEE Trans. Geosci. Remote Sens."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"2375","DOI":"10.1109\/TGRS.2002.803792","article-title":"A new algorithm for surface deformation monitoring based on small baseline differential SAR interferograms","volume":"40","author":"Berardino","year":"2002","journal-title":"IEEE Trans. Geosci. Remote Sens."},{"key":"ref_23","first-page":"33","article-title":"InSAR to support sustainable urbanization over compacting aquifers: The case of Toluca Valley, Mexico","volume":"63","author":"Castellazzi","year":"2017","journal-title":"Int. J. Appl. Earth Obs. Geoinf."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"91","DOI":"10.1016\/j.enggeo.2018.09.023","article-title":"Land subsidence by groundwater over-exploitation from aquifers in tectonic valleys of Central Mexico: A review","volume":"246","year":"2018","journal-title":"Eng. Geol."},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"1196","DOI":"10.1016\/j.scitotenv.2018.11.104","article-title":"Coupling land use evolution and subsidence in the Po Delta, Italy: Revising the past occurrence and prospecting the future management challenges","volume":"654","author":"Corbau","year":"2019","journal-title":"Sci. Total Environ."},{"key":"ref_26","doi-asserted-by":"crossref","unstructured":"Solari, L., Ciampalini, A., Raspini, F., Bianchini, S., and Moretti, S. (2016). PSInSAR analysis in the pisa urban area (Italy): A case study of subsidence related to stratigraphical factors and urbanization. Remote Sens., 8.","DOI":"10.3390\/rs8020120"},{"key":"ref_27","first-page":"101886","article-title":"Land subsidence in Beijing and its relationship with geological faults revealed by Sentinel-1 InSAR observations","volume":"82","author":"Hu","year":"2019","journal-title":"Int. J. Appl. Earth Obs. Geoinf."},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"139405","DOI":"10.1016\/j.scitotenv.2020.139405","article-title":"Analysis of the influence of groundwater on land subsidence in Beijing based on the geographical weighted regression (GWR) model","volume":"738","author":"Yu","year":"2020","journal-title":"Sci. Total Environ."},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"366","DOI":"10.1016\/j.rse.2014.09.008","article-title":"Land subsidence and ground fissures in Xi\u2019an, China 2005\u20132012 revealed by multi-band InSAR time-series analysis","volume":"155","author":"Qu","year":"2014","journal-title":"Remote Sens. Environ."},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"1168","DOI":"10.1109\/LGRS.2013.2288918","article-title":"Geometric accuracy validation for ZY-3 satellite imagery","volume":"11","author":"Wang","year":"2014","journal-title":"IEEE Geosci. Remote Sens. Lett."},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"247","DOI":"10.1179\/1752270615Y.0000000027","article-title":"Assessment of orthoimage and DEM derived from ZY-3 stereo image in Northeastern China","volume":"48","author":"Dong","year":"2016","journal-title":"Surv. Rev."},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"194","DOI":"10.1016\/j.rse.2014.12.007","article-title":"Extraction of ground surface elevation from ZY-3 winter stereo imagery over deciduous forested areas","volume":"159","author":"Ni","year":"2015","journal-title":"Remote Sens. Environ."},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"1268","DOI":"10.1109\/LGRS.2017.2705339","article-title":"Vertical accuracy effect verification for satellite imagery with different GCPs","volume":"14","author":"Zhou","year":"2017","journal-title":"IEEE Geosci. Remote Sens. Lett."},{"key":"ref_34","doi-asserted-by":"crossref","first-page":"603","DOI":"10.1016\/j.asr.2019.05.009","article-title":"Effects of vertical accuracy of digital elevation model (DEM) data on automatic lineaments extraction from shaded DEM","volume":"64","author":"Soliman","year":"2019","journal-title":"Adv. Space Res."},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"111738","DOI":"10.1016\/j.rse.2020.111738","article-title":"Forecasting the magnitude of potential landslides based on InSAR techniques","volume":"241","author":"Zhang","year":"2020","journal-title":"Remote Sens. Environ."},{"key":"ref_36","doi-asserted-by":"crossref","first-page":"103","DOI":"10.1016\/j.enggeo.2014.03.003","article-title":"Investigating landslides and unstable slopes with satellite Multi Temporal Interferometry: Current issues and future perspectives","volume":"174","author":"Wasowski","year":"2014","journal-title":"Eng. Geol."},{"key":"ref_37","doi-asserted-by":"crossref","first-page":"73","DOI":"10.1016\/j.rse.2016.10.037","article-title":"Monitoring land subsidence in the southern part of the lower Liaohe plain, China with a multi-track PS-InSAR technique","volume":"188","author":"Sun","year":"2017","journal-title":"Remote Sens. Environ."},{"key":"ref_38","doi-asserted-by":"crossref","unstructured":"Chen, G., Zhang, Y., Zeng, R., Yang, Z., Chen, X., Zhao, F., and Meng, X. (2018). Detection of land subsidence associated with land creation and rapid urbanization in the Chinese Loess Plateau using time series InSAR: A case study of Lanzhou New District. Remote Sens., 10.","DOI":"10.3390\/rs10020270"},{"key":"ref_39","doi-asserted-by":"crossref","first-page":"813","DOI":"10.1109\/36.673674","article-title":"A novel phase unwrapping method based on network programming","volume":"36","year":"1998","journal-title":"IEEE Trans. Geosci. Remote Sens."},{"key":"ref_40","doi-asserted-by":"crossref","first-page":"105181","DOI":"10.1016\/j.enggeo.2019.105181","article-title":"Surface displacements of the Heifangtai terrace in Northwest China measured by X and C-band InSAR observations","volume":"259","author":"Shi","year":"2019","journal-title":"Eng. Geol."},{"key":"ref_41","doi-asserted-by":"crossref","unstructured":"Meldebekova, G., Yu, C., Li, Z., and Song, C. (2020). Quantifying ground subsidence associated with aquifer overexploitation using space-borne radar interferometry in Kabul, Afghanistan. Remote Sens., 12.","DOI":"10.3390\/rs12152461"},{"key":"ref_42","doi-asserted-by":"crossref","first-page":"249","DOI":"10.1016\/j.enggeo.2014.07.021","article-title":"Structural characterization of natural loess and remolded loess under triaxial tests","volume":"181","author":"Jiang","year":"2014","journal-title":"Eng. Geol."},{"key":"ref_43","doi-asserted-by":"crossref","first-page":"229","DOI":"10.1016\/0013-7952(88)90028-2","article-title":"Comparison between naturally consolidated and laboratory consolidated loess","volume":"25","author":"Rendell","year":"1988","journal-title":"Eng. Geol."},{"key":"ref_44","doi-asserted-by":"crossref","first-page":"77","DOI":"10.1016\/j.enggeo.2009.11.005","article-title":"Integrated analysis of SAR interferometric and geological data for investigating long-term reclamation settlement of Chek Lap Kok Airport, Hong Kong","volume":"110","author":"Jiang","year":"2010","journal-title":"Eng. Geol."},{"key":"ref_45","doi-asserted-by":"crossref","first-page":"410","DOI":"10.1038\/511410c","article-title":"Environment: China\u2019s land creation project stands firm","volume":"511","author":"Liu","year":"2014","journal-title":"Nature"}],"container-title":["Remote Sensing"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2072-4292\/13\/8\/1556\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T05:49:03Z","timestamp":1760161743000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2072-4292\/13\/8\/1556"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,4,16]]},"references-count":45,"journal-issue":{"issue":"8","published-online":{"date-parts":[[2021,4]]}},"alternative-id":["rs13081556"],"URL":"https:\/\/doi.org\/10.3390\/rs13081556","relation":{},"ISSN":["2072-4292"],"issn-type":[{"value":"2072-4292","type":"electronic"}],"subject":[],"published":{"date-parts":[[2021,4,16]]}}}