Arid
DOI10.3390/w10091198
Estimating Changes in the Green Water Productivity of Cropping Systems in Northern Shaanxi Province in China’s Loess Plateau
Wang, Jinping1,2; Ma, Jinzhu1; Clarke-Sather, Afton2,3; Qu, Jiansheng2
通讯作者Ma, Jinzhu
来源期刊WATER
ISSN2073-4441
出版年2018
卷号10期号:9
英文摘要

Water shortages limit agricultural production in the world’s arid and semi-arid regions. The Northern region of China’s Shaanxi Province, in the Loess Plateau, is a good example. Raising the water productivity of rainfed grain production in this region is essential to increase food production and reduce poverty, thereby improving food security. To support efforts to increase crop water productivity (CWP), we accounted for limitations of most existing studies (experimental studies of specific crops or hydrological modeling approaches) by using actual field data derived from statistical reports of cropping patterns. We estimated the CWPs of nine primary crops grown in four counties in Northern Shaanxi from 1994 to 2008 by combining statistics on the cultivated area and yields with detailed estimates of evapotranspiration based on daily meteorological data. We further calculated both the caloric CWP of water (CCWP) and the CWP of productive water (i.e., water used for transpiration). We found that regional CWP averaged 6.333 kg mm(-1) ha(-1), the CCWP was 17,683.81 cal mm(-1) ha(-1), the CWP of productive green water was 8.837 kg mm(-1) ha(-1), and the CCWP of productive green water was 24,769.07 cal mm(-1) ha(-1). Corn, sorghum, and buckwheat had the highest CWP, and although potatoes had the largest planted area and relatively high CWP, they had a low CCWP.


英文关键词agricultural production food security water-use efficiency crop water productivity evapotranspiration
类型Article
语种英语
国家Peoples R China ; USA
收录类别SCI-E
WOS记录号WOS:000448821900090
WOS关键词USE EFFICIENCY ; MANAGEMENT ; WHEAT ; YIELD ; IRRIGATION ; MAIZE ; MODEL ; SOIL
WOS类目Water Resources
WOS研究方向Water Resources
来源机构兰州大学
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/213624
作者单位1.Lanzhou Univ, Coll Earth & Environm Sci, 222 South Tianshui Rd, Lanzhou 730000, Gansu, Peoples R China;
2.Chinese Acad Sci, Lanzhou Lib, 8 Middle Tianshui Rd, Lanzhou 730000, Gansu, Peoples R China;
3.Univ Minnesota Duluth, Geog Urban Environm & Sustainabil Studies, Duluth, MN 55412 USA
推荐引用方式
GB/T 7714
Wang, Jinping,Ma, Jinzhu,Clarke-Sather, Afton,等. Estimating Changes in the Green Water Productivity of Cropping Systems in Northern Shaanxi Province in China’s Loess Plateau[J]. 兰州大学,2018,10(9).
APA Wang, Jinping,Ma, Jinzhu,Clarke-Sather, Afton,&Qu, Jiansheng.(2018).Estimating Changes in the Green Water Productivity of Cropping Systems in Northern Shaanxi Province in China’s Loess Plateau.WATER,10(9).
MLA Wang, Jinping,et al."Estimating Changes in the Green Water Productivity of Cropping Systems in Northern Shaanxi Province in China’s Loess Plateau".WATER 10.9(2018).
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