干旱区生态环境知识资源中心(Arid): 1992-2015全球耕地时空变化

Arid

	1992-2015全球耕地时空变化
其他题名	Spatial and Temporal Variation of Cropland at the Global Level from 1992 to 2015
	谈明洪 ; 李圆圆
来源期刊	资源与生态学报
ISSN	1674-764X
出版年	2019
卷号	10 期号:3 页码:235-245
中文摘要	人口和人均食物需求的增加对全球耕地产生了显著的影响。利用欧空局提供的精度为300m 的最新土地覆被产品,文章分析了1992-2015年全球耕地的时空变化趋势和耕地转化特征。结果显示:1)在1992-2004年间全球耕地面积增长迅速,而在2004-2012年间耕地增长缓慢,2012年后耕地有缓慢减少的趋势。 2)在洲尺度上,非洲耕地有一直增长的态势,而其他洲耕地都经历了耕地转型,有先增长后下降的趋势;在收入较高的国家,耕地多有下降的趋势。3)全球耕地增长的热点区域主要分布在亚马逊林地、欧亚大草原和撒哈拉沙漠边缘。全球耕地减少的中心从欧洲转移到亚洲。由于迅速的城市化,亚洲耕地扩张侵占了大量农田。
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.
中文关键词	全球耕地 ; 耕地转化 ; 时空变化 ; 经济发展水平
英文关键词	global cropland cropland conversion spatiotemporal variation economic level
语种	英语
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURAL ECONOMICS POLICY
WOS研究方向	Agriculture
CSCD记录号	CSCD:6502981
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/239867
作者单位	1.Institute of Geographic Sciences and Natural Resources Research,Chinese Academy of Sciences;;International College,University of Chinese Academy of Sciences, Key Laboratory of Land Surface Pattern and Simulation,Chinese Academy of Sciences;;, ;;, Beijing;;Beijing 100101;;100049; 2.Chinese Research Academy of Environmental Sciences, State Key Laboratory of Environmental Criteria and Risk Assessment, Beijing 100012, China
推荐引用方式 GB/T 7714	谈明洪,李圆圆. 1992-2015全球耕地时空变化[J],2019,10(3):235-245.
APA	谈明洪,&李圆圆.(2019).1992-2015全球耕地时空变化.资源与生态学报,10(3),235-245.
MLA	谈明洪,et al."1992-2015全球耕地时空变化".资源与生态学报 10.3(2019):235-245.