Integrated Assessments of Land Degradation in the Three-Rivers Headwater Region of China from 2000 to 2020
文献类型：期刊论文
| 作者 | Pan, Yao1,2; Yin, Yunhe1; Cao, Wei1 |
| 刊名 | REMOTE SENSING
 |
| 出版日期 | 2023-09-01 |
| 卷号 | 15期号:18页码:22 |
| 关键词 | landscape pattern grassland degradation soil erosion land degradation Three-Rivers Headwater Region |
| DOI | 10.3390/rs15184521 |
| 通讯作者 | Yin, Yunhe(yinyh@igsnrr.ac.cn) |
| 英文摘要 | Since the 1970s, certain areas within the Three-Rivers Headwater Region (TRHR) of China have faced severe land degradation due to the combined effects of climate change and human activities, leading to restricted ecological service functions and hindering the achievement of sustainable development goals (SDGs). Land degradation in the TRHR has received widespread attention. However, the current research mainly focuses on single-dimensional degradation and lacks a comprehensive evaluation of patterns and structures, as well as above-ground and underground assessments. To address this gap, this study employed the SDG indicator 15.3.1 framework, comprehensively considering fragmentation and habitat quality index based on land cover changes, grassland degradation index, and soil water erosion index. These indexes represent the three land degradation pathways of landscape degradation, vegetation degradation, and soil erosion. This study assessed land degradation patterns in the TRHR from 2000 to 2020. Results show that approximately 44.67% of the TRHR experienced land degradation during this period, mainly in meadow-dominated regions. Additionally, 5.64% of the regions experienced the superimposition of two or more land degradation pathways, with the frequent coexistence of soil erosion and grassland degradation, accounting for 4.1% of the affected areas. Landscape degradation affected approximately 2.39% of the regions, characterized by increased grassland fragmentation or habitat quality degradation. In terms of grassland degradation, 22.26% of the regions showed medium degradation, while 7.21% and 5.63% experienced moderate and severe degradation, respectively. Moreover, approximately 13.36% of the region faced a worsening situation of soil erosion. Approximately 55.34% of the study area underwent land improvement, with significant enhancements mainly concentrated in the western and eastern regions. The regrowth of grassland in the western region and the enhancement and homogenization of grassland productivity in the eastern region played pivotal roles in promoting land improvement. This study provides critical insights into the land degradation pattern in the TRHR over the past 20 years, offering valuable references for formulating and implementing measures to protect and construct the ecological security barrier of the plateau. |
| WOS关键词 | SOIL-EROSION ; TIBETAN PLATEAU ; QINGHAI ; DESERTIFICATION |
| 资助项目 | Second Tibetan Plateau Scientific Expedition Program[2019QZKK0403] |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology |
| 语种 | 英语 |
| 出版者 | MDPI |
| WOS记录号 | WOS:001074616600001 |
| 资助机构 | Second Tibetan Plateau Scientific Expedition Program |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/198323]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Yin, Yunhe |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Pan, Yao,Yin, Yunhe,Cao, Wei. Integrated Assessments of Land Degradation in the Three-Rivers Headwater Region of China from 2000 to 2020[J]. REMOTE SENSING,2023,15(18):22. |
| APA | Pan, Yao,Yin, Yunhe,&Cao, Wei.(2023).Integrated Assessments of Land Degradation in the Three-Rivers Headwater Region of China from 2000 to 2020.REMOTE SENSING,15(18),22. |
| MLA | Pan, Yao,et al."Integrated Assessments of Land Degradation in the Three-Rivers Headwater Region of China from 2000 to 2020".REMOTE SENSING 15.18(2023):22. |
入库方式： OAI收割
来源：地理科学与资源研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。