Assessing the harvested area gap in China

文献类型： 外文期刊

第一作者： Yu, Qiangyi

作者： Yu, Qiangyi;Wu, Wenbin;Li, Zhengguo;Yang, Peng;Zhou, Qingbo;Tang, Huajun;Yu, Qiangyi;van Vliet, Jasper;Verburg, Peter H.;You, Liangzhi;Zhu, Tingju;Liu, Zhenhuan

作者机构：

关键词： Yield gap;Land use;Multiple cropping;Cropping frequency;Intensity;Food security

期刊名称：AGRICULTURAL SYSTEMS （ 影响因子：5.37； 五年影响因子：5.622 ）

ISSN：

年卷期：

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收录情况： SCI

摘要： Total crop production is a function of the harvested area and the yield. Many studies have investigated opportunities to increase production by closing the yield gap and by expanding cropland area However, the potential to increase the harvested area by increasing the cropping frequency on existing cropland has remained largely unexplored. Our study suggests that the attainable harvested area gap (HAG) in China ranges from 13.5 to 363 million ha, depending on the selected water allocation scenario, relative to the current harvested area of 160.0 million ha Spatially, South China and the Lower Yangtze region have the largest potential to increase harvested area, as these regions allow triple-cropping, have sufficient water available, and have a good irrigation infrastructure. The results imply that management factors are equally important for exploring the potential against the resource endowment: water allocation has a large impact on both the size and the spatial pattern of the attainable HAG. This indicates the necessity of further examining the spatial-temporal dynamics of HAG at national and regional scales, and its potential contribution to food security and sustainable agricultural development. (C) 2017 Elsevier Ltd. All rights reserved.

分类号： S

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