威远江水电站工程对景观格局的影响分析

Influence Prediction of Landscape Pattern Change by the Construction of Weiyuanjiang River Hydroelectric Station

景观空间结构研究是生态研究的核心之一,景观功能的性质和发挥,影响着一个区域的物质流、信息流和能量流的特征,进而影响该区域的资源开发利用与保护。在遥感和GIS技术的支持下,结合卫星遥感图片和区域特点,确定了景观分类系统,选取了多样性、优势度、破碎度、分离度等景观格局指数,系统分析了景观空间格局和景观纹理特征。结果表明:该工程建设将导致区域景观多样性降低,优势度升高,破碎度和分离度增加。

Landscape spatial structure is one of ecological research focuses. The feature of landscape function influences the characteristics of mass, information and energy structure in a region, and it also influences resource exploitation, usage and protection. Satellite images and ground information were applied to form landscape classification system for a region, based on remote sensing （RS） and geographical information system （GIS）. Four landscape patteyn indexes, namely, diversity index, dominance index, fragmentation index and isolation index were chosen to evaluate landscape pattern. The results showed that landscape diversity will decrease and dominance index, fragmentation and isolation index will increase with the human disturbance in the construction of Weiyuanjiang rive hydroelectric station.