缙云山森林土壤速效K的分布特征及其与物种多样性的关系

摘要

The distribution characteristics of soil available K and its correlations with plant species diversity in the forest ecosystem of Mt.Jinyun are studied in this paper.The results are as follows:①Except for shrub-grassland,the content of available K in soil profiles under different communities has an evident gradient,i.e.,A(humus horizon)>B(deposited horizon)>C(parent material horizon).②The content of available K in A and B horizons gradually increases along the successional direction,i.e.,shrub-grassland