利用遥感和地理信息系统提取2007—2008年夏季上海市蚊虫监测点缓冲区的土地利用状况和景观多样性数据,分析了区域水体、植被空间分布等区域景观特征及其变化对蚊虫密度消长的影响,为城市化过程中的蚊害防控提供参考依据.结果表明,本研究区内蚊虫密度与景观多样性、水网密度和植被密度成正相关关系,与景观破碎度成负相关关系,50%~70%植被覆盖度环境更有利于蚊虫繁殖,水域及水利设施用地的蚊虫密度高于其他用地类型.2007—2008年上海市夏季郊区的蚊虫密度高于市区,城市建设对蚊虫密度消长有重要影响.
The data of land utilization and landscape diversity within mosquito monitoring point buffers in summer of 2007—2008 in Shanghai were extracted by remote sensing and geographic information system.In order to provide a reference basis for prevention and control of anophelism during the process of urbanization,the effect of variation and characteristic of spatial distribution of water and vegetation on mosquito density fluctuation were analyzed.The results showed that there was a positive relationship between mosquito density and landscape diversity,density of water network and vegetation,while negative relationship with degree of landscape fragmentation.It was conducive to mosquito breeding when the degree of vegetation coveragewas 50%~70%in the study districts.The mosquito density of water and water conservancy facilities was larger than other types of land use and the mosquito density of suburb exceeded downtown of Shanghai in summer of 2007—2008.Therefore,the urban construction would influence the mosquito density significantly.