长沙市城乡交错带湿地松人工林土壤特性

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.

Soil Properties of the Pinus elliottii Planted Forest in the Urban-Rural Ecotones of Changsha City

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 ...