摘要
以浙江省杭州市城区为研究对象,通过栅格取样,对研究区内40个样点的土壤性状进行调查,利用地理信息系统(G IS)和地统计学方法对杭州市区土壤性状的空间异质性和格局分布进行了初步研究。研究结果表明:杭州市城区土壤的空间异质性明显,统计变异的大小顺序依次为土壤湿度(SM)>土壤电容率(Eb)>土壤温度(ST)>土壤毛细水导电率(Ecp)>土壤pH值(pH)>土壤溶液导电率(Ecb);土壤温度在局部地区表现出"热岛效应","热岛"位置出现在城区边缘工业区,与城市中心不重叠;城市土壤有机质含量降低,且有向碱性方向演变的趋势。城市土壤空间格局的特性深受人类活动的影响。
By the grid cell method,40 samples were collected from greenlands of Hangzhou City,Zhejiang Province.Spatial heterogeneity and distribution pattern of the soil were investigated with the support of geo-statistics and geographic information system（GIS）.The results showed that there were evident heterogeneities for urban soil properties in the urban area,and the orders of coefficient of variation（CV） were soil moisture content（SM）electric capacity rate（Eb） soil temperature（ST）pore water conductivity（Ecp）soil pH value（pH）conductivity of soil solution（Ecb）;soil temperature demonstrated the ＂ heat island effect ＂ in some points;and there was a developing trend toward basicity and reducing of organic content in urban soil.Then spatial pattern of urban soil characteristics was deeply affected by human activities.
出处
《城市环境与城市生态》
CAS
CSCD
2011年第3期23-25,29,共4页
Urban Environment & Urban Ecology
基金
国家自然科学基金重点项目(90102015)
环保公益性行业科研专项(201009021)
关键词
土壤性状
空间异质性
地统计学
地理信息系统(GIS)
杭州
soil properties
spatial heterogeneity
geo-statistics
geographic information system（GIS）
Hangzhou
