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Assessing spatial-temporal evolution processes and driving forces of karst rocky desertification
Fei Chen;  Shijie Wang;  Xiaoyong Bai;  Fang Liu;  Dequan Zhou;  Yichao Tian;  Jianyong Xiao;  Qinghuan Qian;  Yue Cao;  Huiwen Li;  Mingming Wang;  Yujie Yang
2019
Source PublicationGeocarto International
Pages1-22
Abstract

Karst Rocky Desertification (KRD) has become the most serious ecological disaster in Southwest China. We used the data of Thematic Mapper (TM) images from 1990, 1995, 2000, 2004, and 2011 and the 2016 Operational Land Imager (OLI) image. These sensing images were pre-processed by removing non-karst areas based on lithology and cutting away the land types impossibly generating KRD from land use maps. Then, we used a Classification And Regression Tree (CART) to classify the KRD. We want to improve the interpretation accuracy of KRD through the above steps. The results were as follows: (1) The KRD experiences the evolution process of ‘first deterioration and then improvement’. The rate is −4.94 km2.a−1 over a period of 1990 to 2004, and the rate is 36.48 km2.a−1 from 2004 to 2016; (2) The most influential factors causing KRD formation are the lithology and the resident population density, with contribution rates of 30.17% and 25.86%, respectively.

KeywordKarst Rocky Desertification spatial And Temporal Evolution geography Detector driving Force
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.gyig.ac.cn/handle/42920512-1/10406
Collection环境地球化学国家重点实验室
Affiliation1.Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang, Guizhou, Peoples R China Chinese Academy of Sciences
2.Guizhou Univ, Coll Resources & Environm Engn, Guiyang, Guizhou, Peoples R China Guizhou University
3.Guizhou Normal Univ, Coll Geog & Environm Sci, Guiyang, Guizhou, Peoples R China Guizhou Normal University
4.Chinese Acad Sci, Puding Karst Ecosyst Observat & Res Stn, Puding, Guizhou, Peoples R China Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Fei Chen;Shijie Wang;Xiaoyong Bai;Fang Liu;Dequan Zhou;Yichao Tian;Jianyong Xiao;Qinghuan Qian;Yue Cao;Huiwen Li;Mingming Wang;Yujie Yang. Assessing spatial-temporal evolution processes and driving forces of karst rocky desertification[J]. Geocarto International,2019:1-22.
APA Fei Chen;Shijie Wang;Xiaoyong Bai;Fang Liu;Dequan Zhou;Yichao Tian;Jianyong Xiao;Qinghuan Qian;Yue Cao;Huiwen Li;Mingming Wang;Yujie Yang.(2019).Assessing spatial-temporal evolution processes and driving forces of karst rocky desertification.Geocarto International,1-22.
MLA Fei Chen;Shijie Wang;Xiaoyong Bai;Fang Liu;Dequan Zhou;Yichao Tian;Jianyong Xiao;Qinghuan Qian;Yue Cao;Huiwen Li;Mingming Wang;Yujie Yang."Assessing spatial-temporal evolution processes and driving forces of karst rocky desertification".Geocarto International (2019):1-22.
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