近十年来西溪湿地变化机制的驱动力分析

摘要

选取2000、2007和2012年的高分辨率遥感影像，对西溪湿地进行时空格局演变分析。结果表明，研究区内水域面积减少较为明显，其中河流面积减少了10％左右，库塘面积减少接近50％，植被面积也有不同程度的减少。城市建设用地大幅替代湿地，面积增加近4倍。城市化过程中的房地产开发和道路建设是湿地景观格局变化的主要驱动因素。因此，从干扰源的控制、防御和治理等角度，对西溪湿地的保护对策进行分析，并提出建议。%This paper analyzes the spatio‐temporal pattern evolvement of Xixi wetland using high‐resolution remote sensing images in 2000 ,2007 and 2012 .The results show that the water area reduces obviously ,where the river area reduces about 10% ,reservoirs and ponds area is close to 50% reduction ,and the area of vegetation also have different degrees of reduction .Urban construction land sharply instead of wetland ,the area increases nearly 4 times .Real estate development and road construction in the process of urbanization are the main motors of the wetland landscape pattern change .Finally ,the Xixi wetland protection suggestions are proposed in the aspects of interference source control ,defense and governance .