干旱区生态环境知识资源中心(Arid): Changes in agricultural virtual water in Central Asia,1992-2016

Arid

	Changes in agricultural virtual water in Central Asia,1992-2016
	Yan Ziyan; Tan Minghong
来源期刊	地理学报
ISSN	1009-637X
出版年	2020
卷号	30 期号:11
英文摘要	In recent years,flows of many rivers and lakes have become reduced in arid and semi-arid regions around the world.The most typical examples of this phenomenon occur in Central Asia,and the reduction of the Aral Sea area is closely related to agricultural water use.However,due to a lack of continuous data in Central Asia spanning many years,"virtual water" is used to evaluate changes in agricultural water use.Based on virtual water theory,325 kinds of agricultural products in eight categories are selected as the research object,and changes in virtual water are calculated for Central Asia from 1992 to 2016.Results indicate that:(1) The average annual net export of agricultural virtual water(TVWNE) in Central Asia is about 9 billion m~3,concentrated in Kazakhstan,whose annual TVWNE reaches 8.1 billion m~3.(2) Since 2007,the TVWNE in Central Asia has dropped significantly,with a drop rate of 86%,while the total volume of agricultural virtual water has gradually increased since 1998.(3) The upstream and downstream countries in Central Asia have different characteristics in the change of virtual water quantity.
英文关键词	Central Asia agricultural products virtual water
类型	Article
语种	英语
收录类别	CSCD
WOS类目	Science & Technology - Other Topics
CSCD记录号	CSCD:6836912
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/353385
推荐引用方式 GB/T 7714	Yan Ziyan,Tan Minghong. Changes in agricultural virtual water in Central Asia,1992-2016[J],2020,30(11).
APA	Yan Ziyan,&Tan Minghong.(2020).Changes in agricultural virtual water in Central Asia,1992-2016.地理学报,30(11).
MLA	Yan Ziyan,et al."Changes in agricultural virtual water in Central Asia,1992-2016".地理学报 30.11(2020).