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新疆生态与地理研究所 [1]
遥感与数字地球研究所 [1]
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会议论文 [2]
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2010 [1]
2009 [1]
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Land use dynamics and landscape change pattern in Hetao irrigation district, Inner Mongolia, China
会议论文
6th International Symposium on Digital Earth: Data Processing and Applications, Beijing, China, September 9, 2009 - September 12,2009
Zhang, Yinhui
;
Luo, Yi
;
Zhao, Wenwu
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浏览/下载:16/0
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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.
Regional effects of secondary ecological migration in pasturing area: A case of Fuhai county in Xinjiang
会议论文
2009 International Conference on Environmental Science and Information Application Technology, ESIAT, Wuhan, China, 2009
Changlong
;
Sun1
;
2
;
Jia
;
Liu1
;
Xiaolei
;
Zhang1
;
Hongru
;
Du1
;
Wenwen
;
Ma3
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浏览/下载:20/0
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提交时间:2011/08/23
Animal husbandry - Ecological balance - Field surveys - Fuhai county - Global climate changes - Herdsmen settlement - Junggar Basin - Local government - Migration policy - Production management - Regional effects - Secondary ecological migration - Standard of living - Xinjiang
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