景观格局对洞庭湖区鼠害的影响

景观空间格局与生态学过程的关系是景观生态学研究中的一个核心问题.不论物种保护还是生物灾害的防治,均与生物生存环境的景观格局息息相关.选择洞庭湖区为研究区域,分析了典型样区的景观格局特征,并对耕地和房舍中的鼠类捕获率与反映景观格局特征的景观指数进行相关分析.结果表明:耕地中鼠类的捕获率与景观聚集度、连接度以及斑块形状显著相关;房舍中鼠害的捕获率与建设用地的斑块形状显著相关.从景观格局角度提出了降低耕地和房舍中鼠害捕获率的方法.

Effect of landscape pattern on mouse pest in Dongting Lake area

The relationship between landscape pattern and ecological process is one of the key issues in landscape ecology.Both the species protection and the bio-disaster prevention are closed linked with the landscape pattern of organism's habitat.Taking Dongting Lake area as a case,this paper studied the characteristics of landscape pattern in typical sampling plots,and analyzed the correlation of mouse capture rate in farmland and in house with the indices reflecting the characteristics of landscape pattern.The results showed that the mouse capture rate in farmland correlated significantly with the landscape aggregation,connection,and mosaic shape,while that in house had a significant correlation with the mosaic shape of construction land.Some suggestions on reducing mouse pest were put forward from the viewpoint of landscape pattern.