开封城市土壤主要性质及空间分布分析  

Main Characteristics and Spatial Distribution of Urban Soils in Kaifeng

作　　者：孙艳丽[1] 马建华[2] 

机构地区：[1]许昌学院城乡规划与园林学院,河南许昌461000 [2]河南大学资源与环境研究所,河南开封475000

出　　处：《许昌学院学报》2014年第5期94-99,共6页Journal of Xuchang University

基　　金：河南省教育厅自然科学研究计划项目(2009A170005);许昌市科技发展计划项目(1404001)资助

摘　　要：采用正方形网格法在开封市布设土壤样点137个,采集表层（0 ～ 10 cm）土壤样品进行城市土壤性质的分析.研究发现：城市土壤密度、pH、有机质和全氮均与郊区存在差异,且表现出较大的空间异质性.开封市土壤密度的功能区差异为休闲区＞道路临近区＞居民区＞文教区＞行政区＞工业区,水平分布表现为由西北向东南降低;土壤的pH呈强碱性,空间分布表现为自东南向西北增大;土壤有机质含量为工业区＞行政区＞道路临近区＞居民区＞文教区＞休闲区,由东至西呈环状递减;全氮含量为工业区＞行政区＞道路临近区＞居民区＞文教区＞休闲区,由城市东南区域向西北区域降低.Urban soils, a special soil type, formed along with the development of city, have unique characteristics. With the method of square grid, 137 surface soils samples were set in Kaifeng City. On the basis of field investigation and laboratory analysis, the basic characteristics of urban soils was studied, and the results showed that ： soil density, water content, pH, organic matter and total nitrogen of urban soils are different from rural soils and were spatially heterogeneous. Soil density in topsoil followed the order of recreational district 〉 traffic district 〉 residential district 〉 cultural/educational district 〉 administrative district 〉 industrial district, and the value declined from the northwestern area to southeastern area. The value of pH was above 8, increasing from southeastern area to northwestern area. The content of soil organic matter followed the order of industrial district 〉 administrative district 〉 traffic district 〉 residential district 〉 cultural/educational district 〉 recreational district, taking on the annular shape in horizontal distribution, which decreasing from eastern area to western area. The order of content of total nitrogen was industrial district 〉 administrative district 〉 traffic district 〉 residential district 〉 cultural/educational district 〉 recreational district, decreasing from southeastern area to northwestern area.

关 键 词：城市土壤 性质 空间分布 开封市 

分 类 号：S158.2[农业科学—土壤学]