干旱区生态环境知识资源中心(Arid): Analysis on impacts of hydro-climatic changes and human activities on available water changes in Central Asia

Arid

DOI	10.1016/j.scitotenv.2020.139779
	Analysis on impacts of hydro-climatic changes and human activities on available water changes in Central Asia
	Chen, Hui; Liu, Hailong; Chen, Xi; Qiao, Yina
通讯作者	Liu, HL
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2020
卷号	737
英文摘要	Water resources in Central Asia are very scarce due to natural and anthropogenic impacts. Water shortages have been a major factor hampering the socio-economic development of Central Asia. Exploring internal interactions among climate change, human activities and terrestrial hydrological cycles will help to improve the management of water resources in Central Asia. In this paper, hydro-climatic and anthropogenic data for the period 2003-2016 from the Gravity Recovery and Climate Experiment (GRACE), the Global Land Data Assimilation System(GLDAS), the Climatic Research Unit (CRU) and the Moderate Resolution Imaging Spectroradiometer (MODIS) were used to analyze the influence of natural factors and human activities on changes of available water (AWC). The terrestrial water storage derived from GRACE and GLDAS remarkably declined in 2008, due to a serious drought, but increased thereafter. The AWC positively responded to the vegetation index, evapotranspiration, potential evapotranspiration and air temperature at a lag of 0-1 month, but to precipitation at a lag of 2-3 months. Results of correlation analysis with a spatial square moving window indicated that forests, grasses, croplands and water areas presented significantly positive correlations with AWC, while barren areas and urban areas were negatively correlated with AWC. According to the Boruta algorithm and the Random Forest model, natural factors, namely precipitation, evapotranspiration and potential evapotranspiration, were major factors for AWC in the whole Central Asia. Human activities had direct and indirect impacts on AWC. With the development of society and economy, croplands and urban areas gradually increased, resulting in a rising demand for water withdrawals for agriculture irrigation and industry. The unreasonable utilization and exploitation of water resources led to vegetation degradation and ecosystem deterioration, which would worsen the shortage of water resources in arid regions of Central Asia. (c) 2020 Elsevier B.V. All rights reserved.
英文关键词	Correlation analysis Relative importance Random Forest model Boruta algorithm Water resource shortages
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000553723000005
WOS关键词	ARID CENTRAL-ASIA ; SATELLITE-OBSERVATIONS ; STORAGE VARIATIONS ; VEGETATION ; PRECIPITATION ; GRACE ; LAND ; MANAGEMENT ; DROUGHT ; RIVER
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
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/2XILL650/325283
作者单位	[Chen, Hui; Liu, Hailong] Univ Elect Sci & Technol China, Sch Resources & Environm, Chengdu 611731, Peoples R China; [Chen, Xi] Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Urumqi 830011, Peoples R China; [Qiao, Yina] Southwest Univ, Sch Geog Sci, Chongqing 400716, Peoples R China
推荐引用方式 GB/T 7714	Chen, Hui,Liu, Hailong,Chen, Xi,et al. Analysis on impacts of hydro-climatic changes and human activities on available water changes in Central Asia[J]. 中国科学院新疆生态与地理研究所,2020,737.
APA	Chen, Hui,Liu, Hailong,Chen, Xi,&Qiao, Yina.(2020).Analysis on impacts of hydro-climatic changes and human activities on available water changes in Central Asia.SCIENCE OF THE TOTAL ENVIRONMENT,737.
MLA	Chen, Hui,et al."Analysis on impacts of hydro-climatic changes and human activities on available water changes in Central Asia".SCIENCE OF THE TOTAL ENVIRONMENT 737(2020).