文献类型： 外文期刊

作者： Huang, Kai ¹ ; Wang, Mengqi ¹ ; Zhou, Zhongren ² ; Yu, Yajuan ⁴ ; Bi, Yixing ¹ ;

作者机构： 1.Beijing Forestry Univ, Coll Environm Sci & Engn, Beijing, Peoples R China

2.Beijing Acad Agr & Forestry Sci, Inst Agr Informat & Econ, Beijing, Peoples R China

3.Minist Agr, Key Lab Urban Agr North China, Beijing, Peoples R China

4.Beijing Inst Technol, Sch Mat Sci & Engn, Beijing Key Lab Environm Sci & Engn, Beijing, Peoples R China

关键词： water footprint; agricultural GDP; decoupling indicators; economic growth; Beijing

期刊名称：FRONTIERS IN ENVIRONMENTAL SCIENCE （ 影响因子：5.411； 五年影响因子：6.313 ）

ISSN：

年卷期： 2021 年 9 卷

页码：

收录情况： SCI

摘要： Beijing, the capital of China, is experiencing a serious lack of water, which is becoming a main factor in the restriction of the development of the social economy. Due to the low economic efficiency and high consumption proportion of agricultural water use, the relationship between economic growth and agricultural water use is worth investigating. The "decoupling" index is becoming increasingly popular for identifying the degree of non-synchronous variation between resource consumption and economic growth. However, few studies address the decoupling between the crop water consumption and agricultural economic growth. This paper involves the water footprint (WF) to assess the water consumption in the crop production process. After an evaluation of the crop WF in Beijing, this paper applies the decoupling indicators to examine the occurrence of non-synchronous variation between the agricultural gross domestic product (GDP) and crop WF in Beijing from 1981 to 2013. The results show that the WF of crop production in 2013 reduced by 62.1% compared to that in 1980 - in total, 1.81 x 109 m(3). According to the decoupling states, the entire study period is divided into three periods. From 1981 to 2013, the decoupling states represented seventy-five percent of the years from 1981 to 1992 (Period I) with a moderate decoupling degree, more than ninety percent from 1993 to 2003 (Period II) with a very strong decoupling degree and moved from non-decoupling to strong decoupling from 2004 to 2013 (Period III). Adjusting plantation structure, technology innovation and raising awareness of water-saving, may promote the decoupling degree between WF and agricultural GDP in Beijing.