| Monitoring of Land.Cover Dynamic Change in Lancangjiang River Cascaded Hydropower Area |
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| 作者姓名： | LIU Hongjiang XIE Hongzhong CHEN Lihui GAN Shu ZHANG Jun WEI Fangqiang . Institute of Mountain Hazards and Environment Chinese Academy of Sciences Chengdu Sichuan China . Graduate University of Chinese Academy of Sciences Beijing China . Faculty of Land Resource Engineering Kunming University of Science and Technology Kunming Yunnan China . Yunnan Institute of Geography Yunnan University Kunming Yunnan China |
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| 作者单位： | LIU Hongjiang 1，2，XIE Hongzhong 3，CHEN Lihui 4，GAN Shu 4，ZHANG Jun 4，WEI Fangqiang 1 1. Institute of Mountain Hazards and Environment，Chinese Academy of Sciences，Chengdu 610041，Sichuan，China; 2. Graduate University of Chinese Academy of Sciences，Beijing 100049，China; 3. Faculty of Land Resource Engineering，Kunming University of Science and Technology，Kunming 650092，Yunnan，China; 4. Yunnan Institute of Geography，Yunnan University，Kunming 650223，Yunnan，China |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 0IntroductionSince1950s,more and more dams,withincreasing capacities of water supply,have been built upfor water supply,electricitygeneration andflood control in the world.Thenumber of dams(height>15m)is rapidlyin-creasingfrom5000in1950to38000nowa-days.Great changes have taken place in theworld aquatic environment within a very shortperiod of ti me.These hydropower stations hasrelievedthe shortage of power supply,agricul-ture and industrial water supply and enhancedflood control for the local …
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| 关 键 词： | 澜沧江 坝区 动态变换 遥感 GPS 监测 专题制图仪 |
| 文章编号： | 1007-1202（2006）04-1015-06 |
| 收稿时间： | 2005-12-20 |
Monitoring of land-cover dynamic change in Lancangjiang River cascaded Hydropower Area |
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| Liu Hongjiang,Xie Hongzhong,Chen Lihui,Gan Shu,Zhang Jun,Wei Fangqiang.Monitoring of Land.Cover Dynamic Change in Lancangjiang River Cascaded Hydropower Area[J].Wuhan University Journal of Natural Sciences,2006,11(4):1015-1020. |
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| Authors: | Liu Hongjiang Xie Hongzhong Chen Lihui Gan Shu Zhang Jun Wei Fangqiang |
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| Institution: | (1) Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, 610041 Chengdu, Sichuan, China;(2) Graduate University of Chinese Academy of Sciences, 100049 Beijing, China;(3) Faculty of Land Resource Engineering, Kunming University of Science and Technology, 650092 Kunming, Yunnan, China;(4) Yunnan Institute of Geography, Yunnan University, 650223 Kunming, Yunnan, China |
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| Abstract: | The analysis of the 3 stages' (1988, 1996, 2000) variation of landcover is performed according to Thermatic Mapper (TM) and
Enhancement Thematic Mapper (ETM) satellite image by combining ground GIS database with GPS field collected data in the area
of Xiaowan-Dachaoshan Reservoirs of Lancangjiang River cascaded Hydropower Area. Consequently, the land-cover is divided into
five subclasses, namely water, paddy field and wetland, bare dryland and sparse shrub, secondary forest and density forest.
The result showed that the area of bare land, upland and secondary forest decreased in 1988–1996, whereas from 1996 to 2000,
water body and density forest keep invariability while the areas of paddy field and wetland, bare dryland and sparse crub
increasing and the area of secondary forest decrease; Features of reciprocal transformation between density forest and other
type of land-cover had two points, i. e. secondary forest, bare dryland and sparse shrub converted to density forest; and
density forest converted to secondary forest and paddy field and wetland. It reflects the dynamic variation of density forest;
the area which slope less than 8° and greater than 15° shows bigger variation, however, less change in 8°–15°.
Foundation item: Supported by the National Natural Science Foundation of China (40161010).
Biography: LIU Hongjing (1971-), male, Ph.D. candidate, research direction: environmental remote sensing and digital reduction hazard. |
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| Keywords: | Lancangjiang River dam area land-cover dynamic variation remote sensing monitoring |
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