肖坑地区不同林分土壤养分状况的研究  

Study on Soil Nutrient Condition of Different Forest in Xiaokeng Area

作　　者：余艳峰[1] 王雪梅[1] 刘波[1] 徐小牛[1] 

机构地区：[1]安徽农业大学林学与园林学院,安徽合肥230036

出　　处：《安徽农业科学》2008年第23期10066-10068,共3页Journal of Anhui Agricultural Sciences

基　　金：国家自然科学基金项目(30471386)资助

摘　　要：[目的]为森林的科学经营提供依据。[方法]对肖坑地区常绿阔叶林、竹纯林、马尾松林下0～10、10～20、20～30cm土壤的含量进行测定，研究不同林分土壤的养分状况。[结果]3种林分土壤的全氮、全磷含量随土层的加深而降低，全磷、速效磷含量及10～20cm土层的全氮含量差异明显，全氮含量的变异幅度为0．09％～0．23％。竹纯林土壤全磷含量最高，常绿阔叶林最低；常绿阔叶林土壤有效磷含量最高，马尾松林最低。常绿阔叶林土壤钾含量随土层的加深而增加，竹纯林土壤钾含量在10～20cm土层中最高，马尾松林土壤钾含量在各土层中变化不大。3种林分土壤偏酸性，马尾松林土壤pH值最低。[结论]不同林分土壤养分含量存在一定差异。[ Objective ] The aim was to provide the basis for scientific management of forest. [ Method ] The soil nutrient conditions in different forests were studied through the detection on the content of N, P and K in soil with depths of 0 - 10, 10 -20, 20 -30 cm under 3 types of forests of evergreen broad-leaved forest, bamboo pure forest and masson pine forest in Xiaokeng area. [ Result] The content of total nitrogen and total phosphorus under the 3 types of forests decreased with soil depths. There was significant difference among the contents of total phos- phorus, available phosphorus and total nitrogen in soil with depths of 10 - 20 cm. The variation of total nitrogen content was 0.09% - 0.23%. The total phosphorus content in the soil under bamboo pure forest was highest and that under evergreen broad-leaved forest was low- est ; the available phosphorus content in the soil under evergreen broad-leaved forest was highest and that under masson pine forest was lowest. The potassium content in the soil under evergreen broad-leaved forest changed slightly in each soil layer. All soils under 3 types of forests were acid and the pH in the soil under masson pine forest was lowest. [ Conclusion] The soil nutrient content under different forests existed certain difference.

关 键 词：肖坑地区 林分 N P K 

分 类 号：S714.5[农业科学—林学]