【摘 要】
：
Eucalyptus tree-Ageratina adenophora compound system is considered as a new invasion in Yunnan, southwest China in recent years. In this paper, the impacts of A. adenophora invasion on soil water, soi
【机 构】
：
Institute of Environmental Sciences and Ecological Restoration,School of Life Sciences,Yunnan Univer
【出 处】
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International Symposium on Forest Soils(2013年森林土壤国际研讨会)
论文部分内容阅读
Eucalyptus tree-Ageratina adenophora compound system is considered as a new invasion in Yunnan, southwest China in recent years. In this paper, the impacts of A. adenophora invasion on soil water, soil organic matter, soil nitrogen in E. plantation were investigated, based on the exploration of its causes, the assessment of its risk and the prediction of its succession. The results showed that the invasion had a different impact on four different physical-chemical indexes of soil in E. plantation, characterized with a certain complexity. Its impact on soil water was featured with seasonal difference, namely, during the dry season, the soil water concentration increased significantly (excluding the severely invasive sample on shadowy slope), while, in the rainy season, the soil water concentration decreased significantly. Meanwhile, its impact on soil organic matters and soil nitrogen was related to seasons, exposure and invasive degrees of A. adenophora, but there was no unified rule for them. which should be studied further. It s expected to provide a theoretical basis for the sustainable operation and scientific management of E. plantation under the condition of A. adenophora invasion.
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