干旱区生态环境知识资源中心(Arid): Integrated Assessments of Land Degradation in the Three-Rivers Headwater Region of China from 2000 to 2020

Arid

DOI	10.3390/rs15184521
	Integrated Assessments of Land Degradation in the Three-Rivers Headwater Region of China from 2000 to 2020
	Pan, Yao; Yin, Yunhe; Cao, Wei
通讯作者	Yin, YH
来源期刊	REMOTE SENSING
EISSN	2072-4292
出版年	2023
卷号	15 期号:18
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.
英文关键词	landscape pattern grassland degradation soil erosion land degradation Three-Rivers Headwater Region
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:001074616600001
WOS关键词	SOIL-EROSION ; TIBETAN PLATEAU ; QINGHAI ; DESERTIFICATION
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/398321
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],2023,15(18).
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).
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).