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在RS和GIS技术支持下,使用1990—2005年三期遥感影像数据作为信息源,获取怀柔水库流域近15年景观格局特征数据,利用马尔可夫模型深入分析怀柔水库流域景观动态转化特征。分析表明:灌木林和阔叶林是流域的主要景观类型,流域景观组分相对稳定;阔叶林、针叶林、混交林的面积所占比例呈上升趋势,灌木林面积下降趋势明显;其他土地类型面积在这15年内一直逐年减少;农田面积总体变化不大。
With the support of RS and GIS technology, the data of three remote sensing images from 1990 to 2005 were used as the information source to obtain the landscape pattern data of Huairou Reservoir in recent 15 years. The landscape dynamic characteristics of Huairou reservoir basin were analyzed by using Markov model. The analysis shows that the shrubbery and broadleaf forest are the main landscape types in the basin, and the landscape components of the basin are relatively stable. The proportion of broadleaf forest, coniferous forest and mixed forest is on the rise, and the area of shrub forest is declining obviously. The area of land type has been decreasing year by year in these 15 years; the area of farmland has not changed a lot.