气候变化领域集成服务门户(CCPortal): High agricultural water consumption led to the continued shrinkage of the Aral Sea during 1992-2015

CCPortal

DOI	10.1016/j.scitotenv.2021.145993
	High agricultural water consumption led to the continued shrinkage of the Aral Sea during 1992-2015
	Su, Yanan; Li, Xin; Feng, Min; Nian, Yanyun; Huang, Lingxin; Xie, Tingting; Zhang, Kun; Chen, Feng; Huang, Wei; Chen, Jianhui; Chen, Fahu
通讯作者	Li, X (通讯作者)
发表日期	2021
ISSN	0048-9697
EISSN	1879-1026
卷号	777
英文摘要	The shrinkage of the Aral Sea started in the 1960s, and it has been continued for decades due to arguably both human and natural causes. However, the change of the Aral Sea in the post-Soviet era and its correlations with other changes in the extent of the basin have yet to be fully investigated. Here, we studied the land cover dynamics of the entire Aral Sea basin during 1992-2015 from the perspective of the surrounding environment, in order to investigate the causes of the Aral Sea further shrinkage in recent years. We used the annual Climate Change Initiative (CCI) land cover dataset to provide a spatiotemporally consistent delineation of land cover throughout the period. We found that: (1) In recent years, the Aral Sea continued shrinkage, approximately 50.38% of its water area in 1992 had dried out and turned into bare land by 2015. (2) The cultivated land area remained stable with a slight increase during the period, suggesting that no large-scale abandonment or expansion of farming ex-tent occurred in the post-Soviet era. (3) Among other land types, urban areas are small and slightly expand at a rate of 0.024 x 10(4) km(2)/year, suggesting urbanization, and likely contribute to more water consumption. Our investigation also found that climate warming increased the upstream runoff, which has a positive effect on the water supply of the Aral Sea. The impact of human activity on the Aral Sea is more pronounced than climate-change. Therefore, the continued shrinkage of the Aral Sea was likely due to high water consumption of agriculture continues to exert the influence that existed in the 1960s. Other factors, such as urbanization have exacerbated this effect. The study examined the continued shrinkage of the Aral Sea in post-Soviet era, to provide an insight into the driving factors of the complex and still controversial Aral Sea crisis. (C) 2021 Elsevier B.V. All rights reserved.
关键词	LAND-COVER DATASETS CENTRAL-ASIA CLIMATE-CHANGE VEGETATION DYNAMICS BASIN UNCERTAINTY TRANSITION EFFICIENCY ACCURACY IMPACTS
英文关键词	Land cover; Aral Sea; Surface water; Agriculture; Human activities
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:000655612500001
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/260416
推荐引用方式 GB/T 7714	Su, Yanan,Li, Xin,Feng, Min,et al. High agricultural water consumption led to the continued shrinkage of the Aral Sea during 1992-2015[J]. 中国科学院青藏高原研究所,2021,777.
APA	Su, Yanan.,Li, Xin.,Feng, Min.,Nian, Yanyun.,Huang, Lingxin.,...&Chen, Fahu.(2021).High agricultural water consumption led to the continued shrinkage of the Aral Sea during 1992-2015.SCIENCE OF THE TOTAL ENVIRONMENT,777.
MLA	Su, Yanan,et al."High agricultural water consumption led to the continued shrinkage of the Aral Sea during 1992-2015".SCIENCE OF THE TOTAL ENVIRONMENT 777(2021).