用MapInfo软件分析海兰河流域的水系特征

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以矢量化的1:50000海兰河流域水系图为底图,利用GIS软件(Mapinfo)对该流域的盆地形状、水系的空间分布,河网密度、分歧率、河流弯曲系数等水系特征进行定量分析,研究结果得出该流域水系的平面形状主要以树枝状水系为主,并伴有平行状水系等;E值是0.624,说明流域盆地形状大概是椭圆形;河网密度为0.46,河网密度中等;平均分歧率为3.32,说明该流域受地质构造影响不明显;于流弯曲系数为1.6,属于一般弯曲河流.该研究对海兰河流域国土资源开发和水资源的可持续发展都有积极意义.
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