长沙市城乡交错带湿地松人工林土壤特性

长沙市城乡交错带湿地松人工林土壤特性 Soil Properties of the Pinus elliottii Planted Forest in the Urban-Rural Ecotones of Changsha City 佘济云 SHE Jiyun 1 first-author 田蜜 TIAN Mi 1 中南林业科技大学林学院 中南林业科技大学林学院 College of Forestry,Central South University of Forestry and Technology College of Forestry,Central South University of Forestry and Technology 以长沙市城乡交错带的湿地松人工林为研究对象,利用常规分析方法对湿地松人工林土壤的主要特性指标进行了分析.结果表明:湿地松人工林土壤含水量低,不利于植物生长发育;有机碳含量随着土壤深度的增加而逐渐下降;土壤总体呈酸性,各层土壤pH值自上而下呈上升趋势,土壤有机碳与土壤pH值呈显著负相关（r=-0.685,p<0.05）;总氮含量处于高富集水平,土壤有机碳与土壤总氮之间存在显著线性相关（r=0.887,p<0.05）;土壤总磷量和速效磷都贫乏,总钾和速效钾均处于贫乏水平. Taking the Pinus elliottii planted forest in the urban-rural ecotones of Changsha as the research objective and adopting the conventional analyses and studies on soil properties,the results indicated that: the soil moisture content was low,which was not suitable for the growth and development of new plants;the contents of soil organic carbon（SOC） in P.elliottii planted forest significantly decreased with increasing soil depth while the soil pH value increased across the soil depth;SOC contents in different layers had a significant negative correlation with the soil pH value （r=-0.685,p<0.05）;the contents of the total nitrogen,with which SOC concentration had a significant positive relationship （r=0.887,p<0.05）,were high;the contents of the soil available phosphorus and the total phosphorus were in paucity,and the contents of the total kalium and the available kalium were also in paucity. The analysis provides the reference for the scientific management of forest soil and update and restore of forest ecosystems as well as the improvement of the ecological environment of the city. 湿地松人工林 常规分析 土壤特性 城乡交错带 Pinus elliottii planted forest conventional analyses soil properties urban-rural ecotones 10.14188/j.1671-8836.2010.01.015 S714 湖南省科技计划项目（2006NK3104）;长株潭城市群“两型社会建设”专项（k0803222-21） 2010-01-01 2021-04-01 1 56