论文部分内容阅读
在天然林生长发育及演替过程中,每个阶段所出现的植物群落,相互间已形成一个比较协调的生态环境。在这种协调的生态环境中,天然林植物群落多样性对病虫害具有较强的控制能力。随着天然林植物群落的演替和群落结构的改变,势必对病害自然控制力产生影响。影响天然林病害发生的环境因子,首先是自然和人为因素,其次是林分状况。
In the process of natural forest growth and succession, the plant communities appearing in each stage have formed a more coordinated ecological environment with each other. In this coordinated ecological environment, the diversity of natural forest plant communities has strong control over pests and diseases. With the succession of the natural forest plant community and the change of community structure, it is bound to have an impact on the natural control power of the disease. Environmental factors affecting the occurrence of natural forest diseases, first of all, are natural and human factors, followed by the status of the forest.