蚌埠市绿地土壤几种化学指标的异质性分析

本研究测定了蚌埠市建成区内大型景观绿地土壤的有机质含量、铵态氮含量、速效磷含量、pH和土壤全盐量。在分析了各指标变异系数后发现在不同绿地类型之间绿地土壤化学指标均表现出中等程度的变异。相关分析表明不同绿地类型土壤中除pH值与全盐量间存在显著的相关性外，5种土壤化学指标间没有显著相关性。说明即使在较小的城市建成区范围内，不同类型的绿地土壤由于土壤产生及来源不同，以及受到的人为干扰强度不一样，土壤化学指标也存在空间异质性。

Chemical Indices Heterogeneity of Urban Green Space in Bengbu

This study investigates the several chemical indices of urban green space soil in Bengbu,including soil organic matter, NH4+-N, available P, pH, total salt content. The soil chemical indices which come from different greenbelts types present the heterogeneity through analysing the variation coefficient.The correlation analysis of soil chemical indices indicates that there is nonsignificant correlation among these soil chemical indices except pH and total salt content.The conclusion is brought forward that the uban green space soil nutrients have spacial variability even if it is a small range in city. The reason maybe comes from the soil original background and jamming intensity.