摘要
利用GIS技术,以水位高程变化、库岸坡度为依据,在数字地形图上,制作水位高程-坡度图,通过图形叠加分析,对三峡水库不同坡度消落带分布进行研究。结果表明:15°及以下坡度段的消落带面积最大,约为209.6km2,约占消落带总面积60.90%;15°～25°坡度段消落带面积约为64.1km2,约占总面积18.62%;陡坡消落带面积相对较少,25°以上坡度段消落带面积约为70.5km2,仅占总面积20.48%;25°～35°,35°～60°,>60°3个坡度段的消落带面积依次降低,分别占总面积12.03%,8.06%和0.39%。
To explore distribution of differing slopes in waterlevelfluctuating zone （WLFZ） in Three Gorges Reservoir, the water level, bank slopes of reservoir were selected to establish water level elevation slope and the quantitative analysis was conducted through Geographic Informational System （GIS） integrated with Arc GIS platform. The results show that the main WLFZ area, with total 209.61 km2 and accounts for 60.90% of studied areas. For those areas distributed in between slope 15°-25°and beyond 25°, it totals 64. 1 km2 （18. 62%） and 70.5 km2 （20%） respectively. For areas of WLFZ with the slope range between 25°- 35°, slope range between 35°- 60°and slope beyond 60°, the acreage decline with the the rise in slope, which accounted for 12.03% ,8.06% and 0.39% of the total area of WLFZ, respectively.
出处
《三峡环境与生态》
2013年第3期8-10,20,共4页
Environment and Ecology in the Three Gorges
基金
国家水体污染控制与治理科技重大专项(2012ZX07104-003)资助
关键词
GIS
三峡水库
消落带
库岸坡度
GIS
Three Gorges Reservoir
water-level-fluctuating zone
slope
