Evolution Simulation and Risk Analysis of Land Use Functions and Structures in Ecologically Fragile Watersheds
文献类型：期刊论文
| 作者 | Wang, Yafei1,4; He, Yao1,4; Li, Jiuyi3,4; Jiang, Yazhen2,4 |
| 刊名 | REMOTE SENSING
 |
| 出版日期 | 2022-11-01 |
| 卷号 | 14期号:21页码:18 |
| 关键词 | GEE long-term time series images land use classification spatial modeling land degradation Huangshui watershed |
| DOI | 10.3390/rs14215521 |
| 通讯作者 | Jiang, Yazhen(jiangyz@lreis.ac.cn) |
| 英文摘要 | The evolution of land use functions and structures in ecologically fragile watersheds have a direct impact on regional food security and sustainable ecological service supply. Previous studies that quantify and simulate land degradation in ecologically fragile areas from the perspective of long-term time series and the spatial structure of watersheds are rare. This paper takes the Huangshui Basin of the Qinghai-Tibet Plateau in China as a case study and proposes a long-time series evolution and scenario simulation method for land use function using the Google Earth Engine platform, which realizes the simulation of land use function and structure in ecologically fragile areas by space-time cube segmentation and integrated forest-based prediction. This allows the analysis of land degradation in terms of food security and ecological service degradation. The results show that: (1) the land use function and structure evolution of the Huangshui watershed from 1990 to 2020 have a significant temporospatial variation. In the midstream region, the construction land expanded 151.84% from 1990 to 2004, driven by urbanization and western development policy; in the middle and downstream region, the loss of farmland was nearly 12.68% from 1995 to 2005 due to the combined influence of the policy of returning farmland to forest and urban expansion. (2) By 2035, the construction land in the watershed will be further expanded by 28.47%, and the expansion intensity will be close to the threshold in the upstream and midstream areas and will continue to increase by 33.53% over 2020 in downstream areas. (3) The evolution of land use function and structure will further induce land degradation, causing a 15.30% loss of farmland and 114.20 km(2) of occupation of ecologically vulnerable areas, seriously threatening food security and ecological protection. Accordingly, this paper proposes policy suggestions to strengthen the spatial regulation for land degradation areas and the coordination of upstream, midstream, and downstream development. |
| WOS关键词 | CELLULAR-AUTOMATA MODEL ; USE/LAND COVER CHANGES ; URBAN-GROWTH ; ECOSYSTEM SERVICES ; RANDOM FOREST ; DYNAMICS ; CONSERVATION ; REGION |
| 资助项目 | Second Tibetan Plateau Scientific Expedition and Research Pro-gram[2019QZKK0406] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA20020301] |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology |
| 语种 | 英语 |
| WOS记录号 | WOS:000885822500001 |
| 出版者 | MDPI |
| 资助机构 | Second Tibetan Plateau Scientific Expedition and Research Pro-gram ; Strategic Priority Research Program of the Chinese Academy of Sciences |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/187425]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Jiang, Yazhen |
| 作者单位 | 1.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, State Key Lab Resources & Environm Informat Syst, Beijing 100101, Peoples R China 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China 4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Reg Sustainable Dev Modeling, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Yafei,He, Yao,Li, Jiuyi,et al. Evolution Simulation and Risk Analysis of Land Use Functions and Structures in Ecologically Fragile Watersheds[J]. REMOTE SENSING,2022,14(21):18. |
| APA | Wang, Yafei,He, Yao,Li, Jiuyi,&Jiang, Yazhen.(2022).Evolution Simulation and Risk Analysis of Land Use Functions and Structures in Ecologically Fragile Watersheds.REMOTE SENSING,14(21),18. |
| MLA | Wang, Yafei,et al."Evolution Simulation and Risk Analysis of Land Use Functions and Structures in Ecologically Fragile Watersheds".REMOTE SENSING 14.21(2022):18. |
入库方式： OAI收割
来源：地理科学与资源研究所
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