城市森林土壤肥力质量指标筛选——以南京市为例  

Determination of Fertility Index of Urban Forest Soil in Nanjing City

作　　者：单奇华[1,2] 俞元春[1] 张建锋[2] 虞木奎[2] 成向荣[2] 

机构地区：[1]南京林业大学森林资源与环境学院,南京210037 [2]中国林业科学研究院亚热带林业研究所,浙江富阳311400

出　　处：《土壤》2009年第5期777-783,共7页Soils

基　　金：国家林业局"948"引进项目(2005-4-17);中央级公益性科研院所基本科研业务费专项(RISF2006-2007-07);"十一五"国家科技支撑专题项目(2006BAD03A1403)资助

摘　　要：土壤质量指标的筛选是科学地进行土壤质量评价的前提。本文以城市森林土壤为研究对象,探讨了土壤肥力指标的筛选方法。采集南京市不同功能区森林土壤样品(0～20cm),分析了24个土壤质量指标。根据指标间的相关性和聚类分析结果,筛选出体积质量(容重)、黏粒含量、分散系数、可蚀性因子K值、水稳性指数、pH值、有机质、速效钾和纤维素酶活性,共9个指标作为城市森林土壤肥力质量评价的因子。It is necessary to establish the proper indicators for soil quality assessment. In this paper a method with Peason two-tailed bivariate correlations and Cluster analysis was applied for the determination of soil quality index of urban forest soil. Urban soil samples at 0-20 cm depths were collected from the forests in Nanjing at different functional areas, and 24 soil indicators were analyzed in lab, finally 9 of soil indicators were selected to compose the minimum factor set for the fertility assessment of urban forest soil, including soil bulk density, clay content, dispersion coefficient, erodibility K values, water stable index, pH, organic matter, available potassium, and cellulase activity.

关 键 词：城市森林土壤 相关性 聚类分析 :指标筛选 

分 类 号：S714[农业科学—林学]