Spatial and temporal patterns of China's cropland during 1990-2000: An analysis based on Landsat TM data

CORC > 地理科学与资源研究所 > 中国科学院地理科学与资源研究所 > 历年回溯文献

	Spatial and temporal patterns of China's cropland during 1990-2000: An analysis based on Landsat TM data
	Zhuang Dafang; Deng Xiangzheng; Liu Jiyuan
	2005
关键词	Crops Deforestation Environmental protection Land use
英文摘要	There are large discrepancies among estimates of the cropland area in China due to the lack of reliable data. In this study, we used Landsat TM/ETM data at a spatial resolution of 30 m to reconstruct spatial and temporal patterns of cropland across China for the time period of 1990-2000. Our estimate has indicated that total cropland area in China in 2000 was 141.1 million hectares (ha), including 35.6 million ha paddy land and 105.5 million ha dry farming land. The distribution of cropland is uneven across the regions of China. The North-East region of China shows more cropland area per capita than the South-East and North regions of China. During 1990-2000, cropland increased by 2.79 million ha, including 0.25 million ha of paddy land and 2.53 million ha of dry farming land. The North-East and North-West regions of China gained cropland area, while the North and South-East regions showed a loss of cropland area. Urbanization accounted for more than half of the transformation from cropland to other land uses, and the increase in cropland was primarily due to reclamation of grassland and deforestation. Most of the lost cropland had good quality with high productivity, but most gained cropland was poor quality land with less suitability for crop production. The globalization as well as changing environment in China is affecting land-use change. Coordinating the conflict between environmental conservation and land demands for food will continue to be a primary challenge for China in the future. © 2005 Elsevier Inc. All rights reserved.
出处	Remote Sensing of Environment
卷	98 期:4 页:442-456
收录类别	EI
语种	英语
内容类型	EI期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/24753]
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	Zhuang Dafang,Deng Xiangzheng,Liu Jiyuan. Spatial and temporal patterns of China's cropland during 1990-2000: An analysis based on Landsat TM data. 2005.