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<Pinus massoniana pure forest<P.massoniana-Symplocos setchuensis mixed forest<evergreen broadleaved forest.This law does not exist in the C horizons.③Different degrees of correlations exist between the content of soil available K and plant species diversity.The correlation between species diversities of trees and grasses and the content of available K in A and B horizons is the most significant.
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<Pinus massoniana pure forest<P.massoniana-Symplocos setchuensis mixed forest<evergreen broadleaved forest.This law does not exist in the C horizons.③Different degrees of correlations exist between the content of soil available K and plant species diversity.The correlation between species diversities of trees and grasses and the content of available K in A and B horizons is the most significant.
出处
《生态学杂志》
CAS
CSCD
北大核心
2001年第6期1-3,共3页
Chinese Journal of Ecology
基金
国家自然科学基金重点项目 ( 39330 0 5 0 )资助
关键词
森林土壤
土壤速效钾
K分布
植物
物种多样性
soil available potassium(K),plant species diversity,distribution characteristics,correlation, Mt.Jinyun/Chongqing.
