摘要
研究了松嫩平原西部生态脆弱带生态景观结构,认为景观地球化学的空间分异及相互复合,决定了西部复杂而有规律的生态景观结构。景观地球化学梯度和生态梯度的耦合结果反映出大多植物沿景观地球化学梯度的生长状况表现为钟形或生态分布形曲线。现代条件下,西部植物群落的演替与土壤景观地球化学条件的改变几乎是同时发生的,二者在一定条件下互为因果关系。
Ecotone is a special zone in the landscape, which is very susceptive to the changes in environmental conditions, and hence, is prone to the disturbance by unfavorable conditions. Human activity has a series of positive and negative effects on it, and greatly changes the geo-chemical process in the ecosystem. In the ecosystem, especially in the ecotone, different systems and regimes are interconnected and inter-determined. For the sustainable development of ecosystem and the protection and rational utilization of resources, it is of great importance to study this internal relationship and to seek rational regulation and control measures. With the ecotone in the west Songnen Plain as an example, and based on the studies of the topography, physiognomy, soil, vegetation, and their geographic distribution in the ecotone. , this paper explained the structure of the ecological landscape, and quantitatively analyzed the ecological geo-chemical processes under different landscape conditions. In addition, this paper also tried to make coupling analyses to the ecologic succession and the landscape geo-chemical environment. Under current conditions, the succession of plant communities and the shift of soil landscape geo-chemical conditions in the west Songnen Plain are almost coinstantaneous, and these two factors can inter-determined under certain conditions.
出处
《应用生态学报》
CAS
CSCD
2003年第9期1464-1468,共5页
Chinese Journal of Applied Ecology
基金
中国科学院知识创新工程重大资助项目(KZCXI-SW-19)
