High-resolution mapping and monitoring of national land use/cover changes con-tribute significantly to the knowledge of the interaction between human activities and envi-ronmental changes.China's Land Use/cover Dataset(CLUD)for 2020 and its dynamic changes in 2015-2020 were developed to extend the CLUD to over 30 years(i.e.,the 1980s to 2020 at 5-year intervals)by integrating remote sensing big data and knowledge-based human-computer interaction interpretation methods.This integrating method for CLUD 2020 improved the efficiency of national land use/cover mapping and the accuracy of land use pattern change detection compared to earlier CLUD products,with an overall accuracy of 95％.The intensity of land use change decreased across China in 2015-2020 compared to 2010-2015,although both characteristics of its spatial changes were similar.The cropland area continued to shrink at national scale in 2015-2020,with two regional hotspots including the widespread conversions from dry land into paddy land in Northeast China and the coex-istence of widespread land cultivation and cropland abandonment in Xinjiang of Northwest China.Built-up land area continued to expand in China,showing consistency between 2015-2020 and 2010-2015,in which hotspots transited from the surroundings of coastal megacities to the city surroundings of the central and western zones.For natural land,alt-hough the woodland and grassland decreased in 2015-2020,its magnitude expanded com-pared to 2010-2015.In comparison,the water body area in Qinghai-Tibet Plateau increased significantly under the continuous impact of climate change.These characteristics of land use change were closely related to the development strategy of the top-level design of the 13th Five-Year Plan(2016-2020)(e.g.,ecological civilization construction and high-quality de-velopment).

KUANG Wenhui;ZHANG Shuwen;DU Guoming;YAN Changzhen;WU Shixin;LI Rendong;LU Dengsheng;PAN Tao;NING Jing;GUO Changqing;DONG Jinwei;BAO Yuhai;CHI Wenfeng;DOU Yinyin;HOU Yali;YIN Zherui;CHANG Liping;YANG Jiuchun;XIE Jiali;QIU Juan;ZHANG Hansong;ZHANG Yubo;YANG Shiqi;SA Rigai;LIU Jiyuan

Key Laboratory of Land Surface Pattern and Simulation,Institute of Geographic Sciences and Natural Re-sources Research,CAS,Beijing 100101,China;Northeast Institute of Geography and Agroecology,CAS,Changchun 130102,China;Northeast Agricultural University,Harbin 150030,China;Northwest Institute of Eco-Environment and Resources,CAS,Lanzhou 730000,China;Xinjiang Institute of Ecology and Geography,CAS,Urumqi 830011,China;Innovation Academy for Precision Measurement Science and Technology,CAS,Wuhan 430071,China;Fujian Normal University,Fuzhou 350007,China;Qufu Normal University,Rizhao 276826,Shandong,China;Inner Mongolia Normal University,Hohhot 010022,China;Inner Mongolia University of Finance and Economics,Hohhot 010070,China;University of Chinese Academy of Sciences,Beijing 100049,China;Jilin University,Changchun 130000,China

地理学报（英文版）

[1]KUANG Wenhui;ZHANG Shuwen;DU Guoming;YAN Changzhen;WU Shixin;LI Rendong;LU Dengsheng;PAN Tao;NING Jing;GUO Changqing;DONG Jinwei;BAO Yuhai;CHI Wenfeng;DOU Yinyin;HOU Yali;YIN Zherui;CHANG Liping;YANG Jiuchun;XIE Jiali;QIU Juan;ZHANG Hansong;ZHANG Yubo;YANG Shiqi;SA Rigai;LIU Jiyuan-.Monitoring periodically national land use changes and analyzing their spatiotemporal patterns in China during 2015-2020)[J].地理学报（英文版）,2022(09):1705-1723

coex,istence,hough

Monitoring,periodically,national,use,changes,analyzing,their,spatiotemporal,patterns,China,during,High,resolution,mapping,monitoring,cover,tribute,significantly,knowledge,interaction,between,human,activities,envi,ronmental,Land,Use,Dataset,CLUD,its,dynamic,were,developed,extend,years,1980s,intervals,by,integrating,remote,sensing,big,data,computer,interpretation,methods,This,improved,efficiency,accuracy,detection,compared,earlier,products,overall,intensity,decreased,across,although,both,characteristics,spatial,similar,cropland,area,continued,shrink,scale,two,regional,hotspots,including,widespread,conversions,from,dry,into,paddy,Northeast,cultivation,abandonment,Xinjiang,Northwest,Built,up,showing,consistency,which,transited,surroundings,coastal,megacities,city,central,western,zones,For,natural,woodland,grassland,magnitude,expanded,In,comparison,water,body,Qinghai,Tibet,Plateau,increased,under,continuous,impact,climate,These,closely,related,development,strategy,top,level,design,13th,Five,Year,Plan,ecological,civilization,construction,high,quality

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