Abandoned cropland: Patterns and determinants within the Guangxi Karst Mountainous Area, China

doi:10.1016/j.apgeog.2020.102245

	Abandoned cropland: Patterns and determinants within the Guangxi Karst Mountainous Area, China
	Han, Ze 1,2; Song, Wei 1
刊名	APPLIED GEOGRAPHY
	2020-09-01
卷号	122 页码:15
关键词	Abandoned cropland Moderate resolution imaging spectroradiometer time series Phenology Land use trajectory Karst mountainous area China
ISSN号	0143-6228
DOI	10.1016/j.apgeog.2020.102245
通讯作者	Song, Wei(songw@igsnrr.ac.cn)
英文摘要	Cropland abandonment because of rural depopulation or policy interventions has become a key issue in Chinese mountainous areas. One such region is the Guangxi Karst Mountainous Area (GKMA), a zone where more than 59% of total land area is hilly. Although depopulation and declining agriculture since 2000 within the GKMA have led to vast areas of abandoned cropland, the spatiotemporal distribution that underlies this pattern as well as its causes remain little understood. We therefore estimated the extent of cropland abandonment since 2001 within this region using land use trajectories derived from Moderate Resolution Imaging Spectroradiometer (MODIS) Normalized Difference Vegetation Index (NDVI) data alongside phenology metrics. The results of this analysis show that 4.89% (0.56 x 10(4) km(2)) of land within the GKMA has been abandoned since 2001. Specifically, within four sub-periods (between 2001 and 2005, between 2005 and 2010, between 2011 and 2015, and between 2016 and 2019), overall trends were characterized by an initial increase and then slight decrease in cropland abandonment rate (CAR); 10.67%, 14.71%, 23.13%, and 21.26% over these time periods, respectively. Data also show that CAR spatial distribution tends to be similar to adjacent areas. We then utilized a geographical detector model (GDM) and Spearman correlation analysis to assess the effects of environmental and socioeconomic variables on cropland abandonment patterns. Data show that environmental factors have generally exerted a more significant effect on cropland abandonment within the GKMA than socioeconomic variables. Interactions between determinants have also either exerted non-linear-enhanced or bi-enhanced effects on cropland abandonment over time.
资助项目	National Natural Science Foundation of China[41671177] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDA20040201] ; National Basic Research Program of China[2015CB452702] ; National Key R&D Program of China[2016YFA0602402] ; Key Laboratory of Earth Observation and Geospatial Information Science of NASG[201807]
WOS关键词	AGRICULTURAL LAND ABANDONMENT ; FARMLAND ABANDONMENT ; CARBON SEQUESTRATION ; FOREST ; EUROPE ; RECULTIVATION ; CONSEQUENCES ; HOUSEHOLD ; MODEL ; SUSTAINABILITY
WOS研究方向	Geography
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000581739900006
资助机构	National Natural Science Foundation of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; National Basic Research Program of China ; National Key R&D Program of China ; Key Laboratory of Earth Observation and Geospatial Information Science of NASG
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/156499]
专题	中国科学院地理科学与资源研究所
通讯作者	Song, Wei
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.China Univ Geosci Beijing, Sch Informat Engn, Beijing 10083, Peoples R China
推荐引用方式 GB/T 7714	Han, Ze,Song, Wei. Abandoned cropland: Patterns and determinants within the Guangxi Karst Mountainous Area, China[J]. APPLIED GEOGRAPHY,2020,122:15.
APA	Han, Ze,&Song, Wei.(2020).Abandoned cropland: Patterns and determinants within the Guangxi Karst Mountainous Area, China.APPLIED GEOGRAPHY,122,15.
MLA	Han, Ze,et al."Abandoned cropland: Patterns and determinants within the Guangxi Karst Mountainous Area, China".APPLIED GEOGRAPHY 122(2020):15.