中国科学院机构知识库网格系统: 检索

浏览/检索结果: 共7条，第1-7条

帮助

条数/页：排序方式：
	Integrated Assessments of Land Degradation in the Three-Rivers Headwater Region of China from 2000 to 2020 期刊论文 OAI收割 REMOTE SENSING, 2023, 卷号: 15, 期号: 18, 页码: 22 作者: Pan, Yao; Yin, Yunhe; Cao, Wei \| 收藏 \| 浏览/下载：27/0 \| 提交时间：2023/10/30 landscape pattern grassland degradation soil erosion land degradation Three-Rivers Headwater Region
	Spatio-Temporal Pattern of Land Degradation from 1990 to 2015 in Mongolia 期刊论文 OAI收割 ENVIRONMENTAL DEVELOPMENT, 2020, 卷号: 34, 页码: 15 作者: Wang, Juanle; Wei, Haishuo; Cheng, Kai; Ochir, Altansukh; Davaasuren, Davaadorj \| 收藏 \| 浏览/下载：22/0 \| 提交时间：2021/07/09 Land degradation Distribution pattern Mongolia Driving force Remote sensing Monitoring
	Spatio-Temporal Pattern of Land Degradation from 1990 to 2015 in Mongolia 期刊论文 OAI收割 ENVIRONMENTAL DEVELOPMENT, 2020, 卷号: 34, 页码: 15 作者: Wang, Juanle; Wei, Haishuo; Cheng, Kai; Ochir, Altansukh; Davaasuren, Davaadorj \| 收藏 \| 浏览/下载：16/0 \| 提交时间：2021/07/09 Land degradation Distribution pattern Mongolia Driving force Remote sensing Monitoring
	Spatio-Temporal Pattern of Land Degradation along the China-Mongolia Railway (Mongolia) 期刊论文 OAI收割 SUSTAINABILITY, 2019, 卷号: 11, 期号: 9, 页码: 20 作者: Wang, Juanle; Wei, Haishuo; Cheng, Kai; Li, Ge; Ochir, Altansukh \| 收藏 \| 浏览/下载：54/0 \| 提交时间：2019/09/24 land degradation pattern remote sensing monitoring driving force
	Spatio-Temporal Pattern of Land Degradation along the China-Mongolia Railway (Mongolia) 期刊论文 OAI收割 SUSTAINABILITY, 2019, 卷号: 11, 期号: 9, 页码: 20 作者: Wang, Juanle; Wei, Haishuo; Cheng, Kai; Li, Ge; Ochir, Altansukh \| 收藏 \| 浏览/下载：44/0 \| 提交时间：2019/09/24 land degradation pattern remote sensing monitoring driving force
	Spatio-Temporal Pattern of Land Degradation along the China-Mongolia Railway (Mongolia) 期刊论文 OAI收割 SUSTAINABILITY, 2019, 卷号: 11, 期号: 9, 页码: 20 作者: Wang, Juanle; Wei, Haishuo; Cheng, Kai; Li, Ge; Ochir, Altansukh \| 收藏 \| 浏览/下载：27/0 \| 提交时间：2019/09/24 land degradation pattern remote sensing monitoring driving force
	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.