作　　者： ; ; ; ; (杨宇明）;

机构地区： 西南林业大学

出　　处： 《西部林业科学》 2013年第3期34-39,共6页

摘　　要： 应用1955年、1974年、1981年、1994年、2005年和2011年6个时期的航测照片和卫星影像,通过遥感解译和景观生态统计等方法,分析了滇西北属都湖高原湿地过去56年的景观格局演变及其驱动机制。结果表明,人工筑坝导致属都湖水域面积在1955～1994年间增加了62.4 hm2(52.4%),之后趋于稳定;湖滨带沼泽和沼泽化草甸呈减少趋势;汇水面山有林地面积稳步增加,优势度增强;流域的景观多样性指数和均匀性整体减少,景观趋于同质化;景观破碎度先减少后增加,总变幅不大;景观连通性增强,斑块空间分布更加聚集。故属都湖高原湿地自然景观保存良好,自然生境不断恢复,其景观格局的变化是道路和水坝建设等人为因素及森林演替等自然因素综合作用的结果,其中景观格局演变的自然驱动因素主要是灌木林地、草甸、灌丛草地等植被向有林地的演替。 Based on aerial and remote sensing images from 1955 s to 2011 s, landscape dynamics and its driving mechanisms of the Shudu Lake catchment wetlands in the past 56 years were analyzed by using aerial photograph in- terpretation and landscape ecological statistics. The results showed that the water area of Shudu Lake increased 62.4 hm^2 （52.4 % ） from 1955 to 1994 due to artificial dam construction and then tended to be stable. The lake- shore marshes and marshy meadows showed a decreasing trend. Forest coverage of the catchment increased steadily with more dominancy. The diversity and evenness of landscape all decreased while the homogeneity increased. The landscape fragmentation firstly rose and then declined with a small variation. Meanwhile, the landscape connectivi- ty was strengthened with the concentrative spatial distribution of patches. The natural landscape was well protected and the habitat was continuously restoring. The changes of landscape pattern were the results of both human dis-turbances （e. g. dam and road construction） and natural succession. The natural driving factor of landscape dy- namics was the succession from shrub land, meadow, shrub-grassland to forests.

关 键 词： 滇西北属都湖高原湿地 景观格局指数 时空变化 驱动机制

领　　域： [天文地球]