梅花鹿林下养殖对林地土壤理化性质的影响

The Effect of in-forest raising of Sika Deer on the Physical and Chemical Properties of Forest Soil

通过测定梅花鹿林下养殖林地土壤的容重、总孔隙度、含水量、全氮、全磷、速效磷和速效钾等物理化学指标,确定梅花鹿养殖对林地土壤理化性质的影响及干扰程度,并探究土壤对梅花鹿林下养殖干扰的响应。研究发现随着梅花鹿林下养殖密度的增大,林地土壤容重随之增加,孔隙度减小,含水量降低,土壤中全氮、全磷、速效磷、速效钾含量呈现先增加后随之减小的现象。梅花鹿养殖区域林下土壤的理化性质的变化受到梅花鹿养殖及其密度影响,适度的放养有利于土壤物理性质的改善,增加土壤营养成分的沉积。养殖密度一但超过承载量,将造成土壤的物理性质下降以及营养成分的流失。

In this study,we determined the effects and degree of disturbance of sika deer farming on the physico-chemical properties of forest soil by determining the physico-chemical indices such as soil bulk density,total porosity,water content,total nitrogen,total phosphorus,available phosphorus,and available potassium of sika deer farmed forest soils and explored the response of the soils to the disturbance of sika deer farmed forest soils.It was found that with the increase of understorey breeding density of sika deer,the soil bulk density of the forest floor increased,the porosity decreased,the water content decreased,and the content of total nitrogen,total phosphorus,available phosphorus,and available potassium in the soil showed the phenomenon of first increasing and then decreasing.Changes in the physico-chemical properties of understorey soils in the area of sika deer farming are influenced by sika deer farming and their density,and moderate stocking favours the improvement of soil physical properties and increases the deposition of soil nutrients.Once the stocking density exceeds the carrying capacity,it will result in the deterioration of the physical properties of the soil as well as the loss of nutrients.