水土保持研究2012，Vol.19Issue(1)：37-41,5.
海南省两种人工林林下物种多样性与土壤水分物理性质的关系
Relationship between Plant Species Diversities and Soil Hydro-Physical Properties in Two Plantations in Hainan Province
摘要
Abstract
Plant species diversity,soil hydro-physical properties,and relationship between plant species diversity and soil hydro-physical properties in Eucalyptus plantation and Rubber plantation in Hainan Province were studied.There were fourteen families,twenty genera and twenty-two species of plants in Eucalyptus plantation and fifteen families,twenty-two genera,twenty-five species of plants in Rubber plantation.Soil bulk density of the surface layer in two plantations was less than the underlying layer.Soil bulk density of the surface soil of Eucalyptus plantation was higher than that of Rubber plantation,while in the middle and deep soil layers,the former was less than the latter.Total soil porosity in two plantations decreased from upper soil layer to deeper soil layer,and the total soil porosity of the Rubber plantations in the topsoil was greater than that in Eucalyptus plantations,and in the deeper soil layer,it was almost same in two plantations.Soil capillary porosity in the Rubber plantation decreased with the increasing of soil depth,but it first decreased and then increased in the Eucalyptus plantation.In the surface soil,soil non-capillary porosity of the Rubber plantation was greater than that of Eucalyptus plantation,but in the deeper soil layer,it＇s not different in two plantations.Maximum water holding capacity,capillary moisture capacity,field water holding capacities and discharge moisture capacity of the Rubber plantation were higher than the Eucalyptus plantation.The correlation between plant diversity and soil physical properties in Eucalyptus plantation was less than that in Rubber plantation,while as for the negative correlation the former was higher than the latter.In Eucalyptus plantation,soil capillary porosity,drainage capacity played a positive role in promoting species diversity,other than the capillary porosity,field capacity inhibiting.In Rubber plantation,non-capillary porosity and capillary porosity had the positive effect on species diversity,while the maximum water holding capacity,field water holding capacity and drainage capacity had the negative effect.Therefore,in the Rubber plantation,species diversity and soil hydro-physical properties are better the Eucalyptus plantation,and different soil hydro-physical factors of two plantations limit their own species diversities.关键词
桉树人工林/橡胶人工林/物种多样性/土壤水分物理性质Key words
Eucalyptus plantation/Rubber plantation/plant species diversity/soil hydro-physical properties分类
农业科技引用本文复制引用
向仰州,徐大平,杨曾奖,张宁南,郭俊誉..海南省两种人工林林下物种多样性与土壤水分物理性质的关系[J].水土保持研究,2012,19(1):37-41,5.基金项目
国家“十一五”科技支撑项目 （）
海南金华林业有限公司“桉树人工林生态环境影响监测” （）
