Dry cropland changes in China's Three Gorges Reservoir Region during the period 1990 to 2015

doi:10.1007/s11629-019-5598-1

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > 山地表生过程与生态调控重点实验室

	Dry cropland changes in China's Three Gorges Reservoir Region during the period 1990 to 2015
	Wang Ming-feng 4,5; Tian Feng-xia 3; He Xiu-bin 5; Anjum Raheel 1,4,5; Bao Yu-hai 5; Collins Adrian L.3
刊名	JOURNAL OF MOUNTAIN SCIENCE
	2020
卷号	17 期号:3 页码:516-527
关键词	Dry cropland Altitude Reservoir operation Three Gorges Reservoir Region Landuse change Soil erosion
ISSN号	1672-6316
DOI	10.1007/s11629-019-5598-1
产权排序	1
文献子类	Article
英文摘要	Monitoring and analyzing changes in the extent of cultivated land may inform strategic decisions on issues of environmental and food security. The dry cropland area of 12000 km(2) in the Three Gorges Reservoir Region (TGRR) of China is essential for feeding the local population of approximate to 20 million, but is highly prone to soil erosion, leading to the delivery of excessive amounts of sediment and associated pollutants to the Three Gorges Reservoir (TGR), and causing serious eco-environmental consequences. Against this background, this paper used Landsat images and a digital elevation model to analyze the altitudinal distribution of, and dynamic changes in, the area of dry cropland during the period 1990 to 2015. The results suggest that dry cropland was mainly distributed in the elevation range of 200-600 m. The dry cropland area decreased from 12525.37 km(2) to 11796.27 km(2) during the 25-year study period, including a particularly significant decrease in the rate of decrease from 6.93 km(2)/yr to 43.99 km(2)/yr after 2000. The largest decline in the dry cropland area occurred in the elevation range of 600-900 m. The transformations between dry cropland and forest revealed the impact of the TGR operation on the extent of dry cropland. A total of 528.79 km(2) of dry cropland with slopes >25 degrees were converted to forest after 2000, whereas a total of 642 km(2) of forest was converted to dry cropland during the study period, and these conversions mainly occurred between the elevation of 200-900 m. These spatiotemporal changes in the dry cropland area are likely to raise new issues concerning food security in the TGRR.
电子版国际标准刊号	1993-0321
语种	英语
CSCD记录号	CSCD:6676747
WOS记录号	WOS:000519163500002
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/34634]
专题	成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室
通讯作者	He Xiu-bin
作者单位	1.Abdul Wall Khan Univ, Mardan, Pakistan; 2.Rothamsted Res, Sustainable Agr Sci Dept, Okehampton EX20 2SB, Devon, England 3.Tongren Univ, Dept Tourism & Geog, Tongren 554300, Guizhou, Peoples R China; 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China; 5.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu 610041, Peoples R China;
推荐引用方式 GB/T 7714	Wang Ming-feng,Tian Feng-xia,He Xiu-bin,et al. Dry cropland changes in China's Three Gorges Reservoir Region during the period 1990 to 2015[J]. JOURNAL OF MOUNTAIN SCIENCE,2020,17(3):516-527.
APA	Wang Ming-feng,Tian Feng-xia,He Xiu-bin,Anjum Raheel,Bao Yu-hai,&Collins Adrian L..(2020).Dry cropland changes in China's Three Gorges Reservoir Region during the period 1990 to 2015.JOURNAL OF MOUNTAIN SCIENCE,17(3),516-527.
MLA	Wang Ming-feng,et al."Dry cropland changes in China's Three Gorges Reservoir Region during the period 1990 to 2015".JOURNAL OF MOUNTAIN SCIENCE 17.3(2020):516-527.