基于RS和GIS的川中丘陵区景观格局研究——以云合镇为例

利用高分辨率的IKONOS卫星数据,以RS和GIS为技术手段研究了川中丘陵区的景观格局特征及其影响因素。结果表明,随着地势起伏的加剧和人类活动强度减弱,浅丘、中丘和高丘景观格局的多样性指数分别是1.1437、1.3598和1.4367;优势度依次为0.8022、0.5861和0.5092;分维数依次是1.2652、1.3019和1.3272;破碎度则分别为53.9488、60.1556和54.4666。其景观格局主要受气候、地貌、坡度、人类活动和居民点分布的控制和影响。

Landscape Pattern in the Hilly Region of the Central Sichuan Basin Based on RS and GIS methods——A Case Study in Yunhe

Based on the high resolution IKONOS data,remote sensing(RS) and geographic information system(GIS) were used to study the characteristics and its influential factors of landscape pattern in the hilly region of the central Sichuan basin.The results indicate that,with the relief increment and the reduction of human activities,the diversity index in the low hill,middle hill and high hill is 1.1437,1.3598 and 1.4367,respectively;the dominance is 0.8022,0.5861 and 0.5092,respectively;the fractal dimension is 1.2652,1.3019 and 1.3272,respectively;the degree of fragmentation is 23.9488,30.1556 and 24.4666,respectively.Therefore,landscape pattern in the hilly region of the central Sichuan basin is mainly controlled and influenced by climate,relief,gradient,human activities and the distribution of residential areas.