| 基于RS和GIS的黑河流域景观生态综合评价 |
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| 引用本文： | 张晖,王晓峰,汶婵,都娥娥,余正军.基于RS和GIS的黑河流域景观生态综合评价[J].陕西师范大学学报,2010(1). |
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| 作者姓名： | 张晖 王晓峰 汶婵 都娥娥 余正军 |
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| 作者单位： | 陕西师范大学旅游与环境学院;南京师范大学虚拟地理环境教育部重点实验室; |
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| 基金项目： | 国家自然科学基金资助项目(40871052) |
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| 摘 要： | 利用2006年Landsat TM影像、土壤数据、DEM数据及气象资料,基于RS和GIS技术,针对土地沙漠化、土壤盐渍化和水土流失等主要生态问题,选取植被类型、干旱指数、地形、降水侵蚀力值等8个指标,建立了景观生态综合评价模型,评价了黑河流域景观生态质量.结果表明:(1)黑河流域景观生态综合指数平均值为5.870,以3级和4级为主体,占总面积的68.65%,景观生态质量一般;(2)景观生态质量水平分布表现出明显的区域差异,呈现出流域上游最好、中游次之、下游最差的特点,从行政范围来看,民乐县、山丹县、甘州区、祁连县和肃州区较好,额济纳旗、金塔县、嘉峪关市等则较差.
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| 关 键 词： | 景观生态 黑河流域 遥感 地理信息系统 |
Integrated landscape ecology evaluation of Heihe River basin based on RS and GIS |
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| Abstract: | Based on RS and GIS techniques,a integrated evaluation model of eco-environment quality was developed according to Landsat TM images,soil data,DEM and meteorologic material.Eight indices were selected in the model,which were composed of vegetation type,drought index,soil texture,rainfall erosivity,etc.On the basis,the eco-environment quality of Heihe River basin is evaluated.The results show that(1)Integrated evaluation index of eco-environment quality in Heihe River basin is 5.870.The eco-environment quali... |
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| Keywords: | landscape ecology Heihe River basin remote sensing geographic information system |
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