湘西南山地主要森林类型土壤养分研究

对湘西南永州市6种主要森林类型(针阔混交林、阔叶林、湿地松林、马尾松林、毛竹林和杉木林)林地的土壤养分进行测定与分析,结果表明:针阔混交林和毛竹林的土壤有机质含量较高;针阔混交林的氮、钾元素含量高,而磷元素含量相对较低;毛竹林的速效磷含量最高;阔叶林钾、磷元素含量较高,氮元素含量相对较低;湿地松和马尾松纯林的土壤有机质...

Research on soil nutrient status under main forest types in mountainous areas, southwest Hunan

The soil nutrients in six main forest types（Coniferous-broadleaved mixed forest,Broad-leaved forest,Pinus elliottii grove,Pinus massoniana grove,Phyllostachys pubescens grove,Cunninghamia lanceolata grove） of Yongzhou City of southwest Hunan were measured and analyzed.The results showed that,the organic matter contents of soil were relatively high in Coniferous-broadleaved mixed forest and Phyllostachys pubescens grove.The contents of N,K in soil were high in Coniferous-broadleaved mixed forest,while P content was relatively low.The content of P was the highest in Phyllostachys pubescens grove.The contents of K,P were higher in Broad-leaved forest,while N content was relatively lower.The contents of soil organic matter and soil nutrients were relatively low in Pinus elliottii grove and Pinus massoniana grove.Results indicated that Pinus elliottii grove and Pinus massoniana grove could be not conducive to improve the conditions of soil nutrient.Coniferous-broadleaved mixed forest,Broad-leaved forest and young Phyllostachys pubescens grove would be beneficial to improve the conditions of soil nutrient,to prevent soil fertility declination and to maintain forestry sustainable development.