Thirty years’ spatio-temporal evolution of desertification degrees and driving factors in Turpan–Hami Basin, Xinjiang, China
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Le résumé fourni par la source
Turpan-Hami (Tuha) Basin is in an extremely arid area, surrounded by mountains and desert with sparse vegetation. It has experienced serious desertification over the past 30 years, resulting in ecological environment and socio-economic issues. To reveal the temporal and spatial evolutions of desertification degrees in Tuha Basin, we first constructed an evaluation system for the desertification degree classification using vegetation and soil-related indices; then long-time series Landsat 5 TM/ Landsat8 OLI images and a C5.0 decision tree (DT) model were used to monitor large-scale desertification from 1990 to 2020. We applied a geographic detector to discover the driving forces between desertification changes and natural and human factors. The results demonstrated that the severe desertification (SD) accounted for the largest desertification degree, and the transitions of various desertification degrees mainly occurred between extremely severe desertification (ESD) and SD, which were considered the most active degrees. Only 9.4 % of Tuha Basin showed an expansion trend in desertification degree, with the most significant expansion occurred in 1990–1995. The proportion of 13.6 % desertification showed a reversion trend, with the most significant reversion occurred in 1995–2010. The main driving factors affecting the evolution of desertification degrees were precipitation and temperature, with the average q value higher than 0.95. Human activity factors such as year-end cropland area and population also impacted the patterns of desertification degree, with the q values of 0.9 and 0.7, respectively. The interactive detection enhanced the driving forces and the interaction between precipitation and other factors played a leading role in desertification degree changes. The results provide scientific data and a basis for desertification control and ecological protection in arid areas.
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Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- Thirty years’ spatio-temporal evolution of desertification degrees and driving factors in Turpan–Hami Basin, Xinjiang, China
- Date Crossref
- 01/09/2024
- Éditeur
- Elsevier BV
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
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Chinese Academy of Sciences pays non établi dans la noticeOrganisme public
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Beijing Institute of Big Data Research pays non établi dans la noticeStructure de recherche
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Aerospace Information Research Institute pays non établi dans la noticeUniversité ou école supérieure
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International Research Center of Big Data for Sustainable Development Goals pays non établi dans la noticeOrganisation à but non lucratif
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Land Consolidation and Rehabilitation Center pays non établi dans la noticeInstitution
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University of Chinese Academy of Sciences pays non établi dans la noticeUniversité ou école supérieure
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Key Laboratory of Digital Earth Science pays non établi dans la noticeStructure de recherche
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School of Marine Technology and Geomatics pays non établi dans la noticeUniversité ou école supérieure
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Jiangsu Land Development and Consolidation Center pays non établi dans la noticeInstitution
Chinese Academy of Sciences, Beijing Institute of Big Data Research et Aerospace Information Research Institute, avec 6 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.