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	The Effects of Land Use and Landform Transformation on the Vertical Distribution of Soil Nitrogen in Small Catchments 期刊论文 OAI收割 SUSTAINABILITY, 2024, 卷号: 16, 期号: 17, 页码: 14 作者: Yu, Yunlong; Wang, Shanshan; Qiu, Junping \| 收藏 \| 浏览/下载：36/0 \| 提交时间：2024/10/15 catchment hydrology foot slope reshaping farmland creation agriculture N management
	~(137)Cs和~(210)Pb_(ex)示踪黑土区坡耕地土壤侵蚀对有机碳的影响期刊论文 OAI收割应用生态学报, 2013, 卷号: 24, 期号: 7, 页码: 1856 作者: 方海燕; 盛美玲; 孙莉英; 蔡强国 \| 收藏 \| 浏览/下载：4/0 \| 提交时间：2023/05/29 soil erosion soil organic carbon (SOC) black soil region slope farmland 土壤侵蚀土壤有机碳黑土区坡耕地
	Analysis of comprehensive benefits of transforming slope farmland to terraces on the Loess Plateau: A case study of the Yangou Watershed in Northern Shaanxi Province, China 期刊论文 OAI收割 JOURNAL OF MOUNTAIN SCIENCE, 2011, 卷号: 8, 期号: 3, 页码: 448–457 Xu Yong; Yang Bo; Tang Qing; Liu Guobin; Liu Puling 收藏 \| 浏览/下载：24/0 \| 提交时间：2013/08/12 Slope farmland Terrace Comprehensive benefits Yangou Watershed Loess Plateau
	Analysis of comprehensive benefits of transforming slope farmland to terraces on the Loess Plateau: A case study of the Yangou Watershed in Northern Shaanxi Province, China SCI/SSCI论文 OAI收割 2011 作者: Tang Q.; Xu Y.; Xu Y. 收藏 \| 浏览/下载：18/0 \| 提交时间：2012/06/08 Slope farmland Terrace Comprehensive benefits Yangou Watershed Loess Plateau for-green policy grain land impacts
	Land use dynamics and landscape change pattern in Hetao irrigation district, Inner Mongolia, China 会议论文 OAI收割 6th International Symposium on Digital Earth: Data Processing and Applications, Beijing, China, September 9, 2009 - September 12,2009 Zhang, Yinhui; Luo, Yi; Zhao, Wenwu 收藏 \| 浏览/下载：27/0 \| 提交时间：2014/12/07 This study analyzed spatial and temporal changes in land use in an irrigation district covering an area of 1.7 million ha in Northern China by GIS analyses and also investigated changes in landscape pattern using the landscape structure analysis program FRAGSTATS over the study period from 1986 to 2000. The decreases in farmland and the increases in grassland area mainly resulted from the policy of grain for green and converting slope farmland into pasture from China government. In spite of the efforts to conserve the fragile ecosystem the land degradation including soil salinization and grassland degradation was spreading rapidly. The area of alkali-saline land increased by 22493 ha and about 50555 ha of dense grassland degraded into mid-density grassland. In terms of landscape fragmentation both farmland and dense grassland showed the tendency of increased fragmentation. Both adverse natural conditions and human activities are responsible for the land degradation expansion in Hetao irrigation district but the root causes are increasing population pressure and irrational human activities such as flooding irrigation method and over-grazing. To prevent land degradation from spreading population control and improvement of the management are prerequisite approaches. 2010 SPIE.
	Spatial disparity of slope farmland and food security in three gorges area 期刊论文 OAI收割 JOURNAL OF MOUNTAIN SCIENCE, 2004, 卷号: 1, 期号: 1, 页码: 89–95 Wang Liming; Feng Renguo; Yang Yanfeng; Guan Qingfeng 收藏 \| 浏览/下载：28/0 \| 提交时间：2013/08/15 Slope farmland de-farming food security spatial disparity
	Succession features and dynamic simulation of subalpine forest in the Gongga Mountain, China 期刊论文 OAI收割 Journal of Mountain Science, 2004, 卷号: 1, 期号: 1, 页码: 29-37 作者: Ji Luo; Genwei Cheng 收藏 \| 浏览/下载：16/0 \| 提交时间：2010/11/25 Slope farmland de-farming foodsecurity spatial disparity