An estimation of the extent of cropland abandonment in mountainous regions of China

doi:10.1002/ldr.2924

	An estimation of the extent of cropland abandonment in mountainous regions of China
	Li, Shengfa 1,2,3; Li, Xiubin 1,2; Sun, Laixiang 4; Cao, Guiying 4; Fischer, Guenther 4; Tramberend, Sylvia 4
刊名	LAND DEGRADATION & DEVELOPMENT
	2018-05-01
卷号	29 期号:5 页码:1327-1342
关键词	agricultural labour productivity China cropland abandonment mountainous regions population projection
ISSN号	1085-3278
DOI	10.1002/ldr.2924
通讯作者	Li, Xiubin(lixb@igsnrr.ac.cn)
英文摘要	With the wages for migrant workers increasing dramatically in China since 2003, the size of the agricultural labour forces has been shrinking rapidly. Intensively substituting agricultural machinery for the shrinking farm labour force is hardly possible for croplands in the mountainous regions of China where mechanization is difficult to achieve due to small field size and rough terrain. This has eventually led to cropland abandonment in these regions. Considering the high pressure for food security in China, cropland abandonment in the mountainous regions should not be ignored. By employing a novel method, this study estimates the extent of recently abandoned croplands (period 2000-2010) and the changes that can be expected in the future in China's mountainous areas. The results show that the total extent of abandoned croplands in Chinese mountainous counties during the period 2000 to 2010 is estimated at 147 million mu (1 mu=666.67m(2)); in total, about 28% of croplands in mountainous counties was abandoned, including croplands converted in the Grain for Green Programme. With 3 scenario assumptions, a sizeable extent, 114 to 203 million mu, of croplands may be abandoned from 2010 to 2030 with the rapid decrease and ageing of projected farm labour forces. This could exacerbate the future challenges of maintaining China's food security. A substantial increase in agricultural project investments, including land consolidation and agricultural productive fixed assets, especially microtillage machines, could help mitigate the risk of cropland abandonment. Additionally, land-use and environmental policymaking should take into account the expanding cropland abandonment in mountainous regions.
资助项目	National Basic Research Program of China (973 Program)[2015CB452706] ; GDAS' Special Project of Science and Technology Development[2018GDASCX-0903] ; GDAS' Special Project of Science and Technology Development[2017GDASCX-0101] ; GDAS' Special Project of Science and Technology Development[2018GDASCX-0101] ; National Natural Science Foundation of China[41161140352]
WOS关键词	AGRICULTURAL LAND ABANDONMENT ; FOREST-TRANSITION THEORY ; SOIL ORGANIC-CARBON ; FARMLAND ABANDONMENT ; GREEN PROGRAM ; SWISS MOUNTAINS ; TM DATA ; AREAS ; COVER ; GRAIN
WOS研究方向	Environmental Sciences & Ecology ; Agriculture
语种	英语
出版者	WILEY
WOS记录号	WOS:000433587400003
资助机构	National Basic Research Program of China (973 Program) ; GDAS' Special Project of Science and Technology Development ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/54750]
专题	中国科学院地理科学与资源研究所
通讯作者	Li, Xiubin
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Guangzhou Inst Geog, Guangdong Open Lab Geospatial Informat Technol &, Guangzhou 510070, Guangdong, Peoples R China 4.Int Inst Appl Syst Anal, A-2361 Laxenburg, Austria
推荐引用方式 GB/T 7714	Li, Shengfa,Li, Xiubin,Sun, Laixiang,et al. An estimation of the extent of cropland abandonment in mountainous regions of China[J]. LAND DEGRADATION & DEVELOPMENT,2018,29(5):1327-1342.
APA	Li, Shengfa,Li, Xiubin,Sun, Laixiang,Cao, Guiying,Fischer, Guenther,&Tramberend, Sylvia.(2018).An estimation of the extent of cropland abandonment in mountainous regions of China.LAND DEGRADATION & DEVELOPMENT,29(5),1327-1342.
MLA	Li, Shengfa,et al."An estimation of the extent of cropland abandonment in mountainous regions of China".LAND DEGRADATION & DEVELOPMENT 29.5(2018):1327-1342.