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	Impacts of ecological restoration projects on agricultural productivity in China
	Qin Y. W. ; Yan H. M. ; Liu J. Y. ; Dong J. W. ; Chen J. Q. ; Xiao X. M.
	2013
关键词	ecological restoration agricultural productivity remote sensing Grain for Green Reclaimed Cropland to Lake land-use change food security spatial-patterns driving forces use efficiency 21st-century conversion satellite cropland policies
英文摘要	The changes in cropland quantity and quality due to land use are critical concerns to national food security, particularly for China. Despite the significant ecological effects, the ecological restoration program (ERP), started from 1999, has evidently altered the spatial patterns of China's cropland and agricultural productivity. Based on cropland dynamic data from 2000 to 2008 primarily derived from satellite images with a 30-m resolution and satellite-based net primary productivity models, we identified the impacts on agricultural productivity caused by ERP, including "Grain for Green" Program,(GFGP) and "Reclaimed Cropland to Lake" (RCTL) Program. Our results indicated that the agricultural productivity lost with a rate of 132.67x10(4) t/a due to ERP, which accounted for 44.01% of the total loss rate caused by land use changes during 2000-2005. During 2005-2008, the loss rate due to ERP decreased to 77.18x10(4) t/a, which was equivalent to 58.17% of that in the first five years and 30.22% of the total loss rate caused by land use changes. The agricultural productivity loss from 2000-2008 caused by ERP was more attributed to GFGP (about 70%) than RCTL. Although ERP had a certain influence on cropland productivity during 2000-2008, its effect was still much less than that of urbanization; moreover, ERP was already converted from the project implementation phase to the consolidation phase.
出处	Journal of Geographical Sciences
卷	23
期	3
页	404-416
收录类别	SCI
语种	英语
ISSN号	1009-637X
内容类型	SCI/SSCI论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/30303]
专题	地理科学与资源研究所_历年回溯文献
推荐引用方式 GB/T 7714	Qin Y. W.,Yan H. M.,Liu J. Y.,et al. Impacts of ecological restoration projects on agricultural productivity in China. 2013.

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