Divided the forest landscape according to the land type and vegetation characteristic, then used GIS software to carry on digitization, calculated the patch index.
根据土地类型和植被特征划分景观类型，然后运用GIS软件进行数字化，并计算斑块指标。
The model of overlap index based on GIS was applied to finish the slope stability division in Daqu reservoir area.
论文运用基于GIS技术的因子指标叠加模型，实现了达曲库区边坡稳定性分区。
Firstly, a research of the calculation of noise prediction model based on GIS, noise impact index, as well as the database design are conducted; Secondly, VB6.
首先对基于GIS的噪声预测模型计算、噪声冲击指数计算，以及数据库设计等关键技术问题进行了研究，然后选择了VB6。
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