干旱区生态环境知识资源中心(Arid): Assessing land degradation and quantifying its drivers in the Amudarya River delta

Arid

DOI	10.1016/j.ecolind.2019.105595
	Assessing land degradation and quantifying its drivers in the Amudarya River delta
	Jiang, Liangliang 1,2,3,4,5,6; Jiapaer, Guli 1,2,3,5; Bao, Anming1,2,3,5 ; Li, Yaoming 1,3; Guo, Hao 1,2,3,4,5,6; Zheng, Guoxiong 1,2,3; Chen, Tao 1,2,3; De Maeyer, Philippe 4,5,6
通讯作者	Bao, Anming
来源期刊	ECOLOGICAL INDICATORS
ISSN	1470-160X
EISSN	1872-7034
出版年	2019
卷号	107
英文摘要	The shrinking of the Aral Sea is one of the most shocking environmental disasters in the world. The Amudarya River delta (AD) is highly vulnerable to land degradation. In this research, NDVI and albedo, which represent vegetation and soil conditions, were applied in change vector analysis (CVA) to monitor land degradation. The vegetation degradation and soil exposure characteristics of land degradation were considered. Furthermore, based on boosted regression trees (BRTs), eight potential driving factors (precipitation, temperature, drought, water withdrawal, canal, livestock, salt discharge and population) were chosen to explore their relative importance to land degradation. The results revealed that some land areas have gradually degraded and fell into high land degradation in the AD, especially in the downstream areas near the Aral Sea. Soil salinization is a major consequence of high land degradation in this region. Subsequently, 920.75 km(2) and 183.10 km(2) of abandoned croplands were converted to sparse vegetation and grasslands, respectively. The BRT model indicated that water withdrawal availability and decreased precipitation were the most influential factors explaining the land degradation of croplands and natural vegetation from 1990 to 2000, respectively. In contrast, the salt discharge to the field plot was a major force causing land degradation of different vegetation types in the subsequent time interval (2000-2015). Because an increase in the groundwater level resulted in secondary soil salinization, a large proportion (45%) of the increased salinization occurred during this time period. Notably, due to the accelerated shrinking of the Aral Sea, some land areas surrounding the sea have fallen into high land degradation. Our findings can contribute to the implementation of the land degradation neutrality initiative to deploy restoration plans in the AD.
英文关键词	Land degradation Climate change Anthropogenic disturbances Amudarya River delta
类型	Article
语种	英语
国家	Peoples R China ; Belgium
收录类别	SCI-E
WOS记录号	WOS:000490757500057
WOS关键词	CLIMATIC WATER-BALANCE ; CHANGE-VECTOR ANALYSIS ; QUANTITATIVE ASSESSMENT ; SOIL-SALINITY ; DESERTIFICATION ; REGION ; IRRIGATION ; DYNAMICS ; ROMANIA ; REHABILITATION
WOS类目	Biodiversity Conservation ; Environmental Sciences
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
EI主题词	2019-12-01
来源机构	中国科学院新疆生态与地理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/311364
作者单位	1.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, Urumqi 830011, Peoples R China; 2.Key Lab GIS&RS Applicat Xinjiang Uygur Autonomous, Urumqi, Peoples R China; 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China; 4.Univ Ghent, Dept Geog, B-9000 Ghent, Belgium; 5.Sino Belgian Joint Lab Geoinformat, Urumqi 830011, Peoples R China; 6.Sino Belgian Joint Lab Geoinformat, B-9000 Ghent, Belgium
推荐引用方式 GB/T 7714	Jiang, Liangliang,Jiapaer, Guli,Bao, Anming,et al. Assessing land degradation and quantifying its drivers in the Amudarya River delta[J]. 中国科学院新疆生态与地理研究所,2019,107.
APA	Jiang, Liangliang.,Jiapaer, Guli.,Bao, Anming.,Li, Yaoming.,Guo, Hao.,...&De Maeyer, Philippe.(2019).Assessing land degradation and quantifying its drivers in the Amudarya River delta.ECOLOGICAL INDICATORS,107.
MLA	Jiang, Liangliang,et al."Assessing land degradation and quantifying its drivers in the Amudarya River delta".ECOLOGICAL INDICATORS 107(2019).