Spatial and Temporal Variation of Cropland at the Global Level from 1992 to 2015

	Spatial and Temporal Variation of Cropland at the Global Level from 1992 to 2015
	Tan Minghong 2; Li Yuanyuan 1
刊名	Journal of Resources and Ecology
	2019
卷号	10 期号:3 页码:235
关键词	全球耕地耕地转化时空变化经济发展水平
ISSN号	1674-764X
英文摘要	Correlated increases in population and demand for food over recent decades have caused remarkable changes in cropland area globally.Utilizing the latest data product provided by the European Space Agency (ESA),this paper analyzes annual trends and spatiotemporal variations in cropland area and discusses cropland conversion,losses,and increases globally between 1992 and 2015 at a 300 m resolution.The results show that the global area of cropland increased rapidly between 1992 and 2004,more slowly between 2004 and 2012,and began to decrease gradually since 2012.First,an increasing trend in cropland area has been maintained solely in Africa;all other regions are characterized by decreasing trends in later periods despite different transition points and change rates.A reduction in cropland area frequently emerged earlier in high-income countries.Second,increase rates in cropland area have largely decreased in recent years while the overall rate of loss has remained almost the same.Hotspot areas of global cropland increases are mainly concentrated around the edge of the Amazon forest,Eurasian Steppe,and Sahara Desert.These hotspot areas of global cropland loss shifted from Europe to Asia while built-up areas have expanded at the expense of cropland.
语种	英语
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/152383]
专题	中国科学院地理科学与资源研究所
作者单位	1.Chinese Research Academy of Environmental Sciences 2.Institute of Geographic Sciences and Natural Resources Research,Chinese Academy of Sciences
推荐引用方式 GB/T 7714	Tan Minghong,Li Yuanyuan. Spatial and Temporal Variation of Cropland at the Global Level from 1992 to 2015[J]. Journal of Resources and Ecology,2019,10(3):235.
APA	Tan Minghong,&Li Yuanyuan.(2019).Spatial and Temporal Variation of Cropland at the Global Level from 1992 to 2015.Journal of Resources and Ecology,10(3),235.
MLA	Tan Minghong,et al."Spatial and Temporal Variation of Cropland at the Global Level from 1992 to 2015".Journal of Resources and Ecology 10.3(2019):235.