【摘要】 对辽河流域景观结构进行分析的结果表明,2000年-2010年间,辽河流域自然景观类型面积变化不明显,结构稳定;而人工景观变化明显,居民区、交通用地等人工表面持续增加,农田面积持续减少,景观破碎化趋势明显。生态环境保护政策的实施使林地、草地、湿地等自然景观得到保护,为流域生态系统的演替提供了正向干扰;工业化进程和人口增长作为流域景观变化的主要驱动力,是人工表面增加和农田面积减少及破碎化的直接原因。更多还原

【Abstract】 Based on remote sensing data,GIS technology and landscape ecology theory,the landscape changes in the past decade in the reaches of Liaohe River and its driving factors were analyzed. The study based on and RS showed that from 2000 to2010,forest,grassland and other natural landscape types did not change significantly and the landscape structure is stable. While the artificial landscape changed significantly. Artificial surface area of residential and transportation increased continuously,while that of farmland decreased and farmland landscape fragmentation was obviously. The implementation of ecological and environmental protection policies made forest,grassland,wetland and other natural landscapes are protected,which provided positive interference to stabilize the ecosystems succession. Industrialization and population expansion were the main driving forces of the landscape change in the reaches of Liaohe River which cause the increase of artificial surface area and the decrease of farmland area as well as the fragmentation of farmland landscape.更多还原