Xu Zhenggang, Zhao Yunlin, Li Bo, Zhang Meiwen, Shen Guo, Wang Yong
Dongting Lake Station for Wetland Ecosystem Observation and Research, Key Laboratory of Agro-ecological Process in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, China.
Hu Nan City University, Yiyang, China.
Integr Zool. 2015 May;10(3):267-81. doi: 10.1111/1749-4877.12119.
Rodent pests severely damage agricultural crops. Outbreak risk models of rodent pests often do not include sufficient information regarding geographic variation. Habitat plays an important role in rodent-pest outbreak risk, and more information about the relationship between habitat and crop protection is urgently needed. The goal of the present study was to provide an outbreak risk map for the Dongting Lake region and to understand the relationship between rodent-pest outbreak variation and habitat distribution. The main rodent pests in the Dongting Lake region are Yangtze voles (Microtus fortis). These pests cause massive damage in outbreak years, most notably in 2007. Habitat evaluation and ecological details were obtained by analyzing the correlation between habitat suitability and outbreak risk, as indicated by population density and historical events. For the source-sink population, 96.18% of Yangtze vole disaster regions were covered by a 10-km buffer zone of suitable habitat in 2007. Historical outbreak frequency and peak population density were significantly correlated with the proportion of land covered by suitable habitat (r = 0.68, P = 0.04 and r = 0.76, P = 0.03, respectively). The Yangtze vole population tends to migrate approximately 10 km in outbreak years. Here, we propose a practical method for habitat evaluation that can be used to create integrated pest management plans for rodent pests when combined with basic information on the biology, ecology and behavior of the target species.
啮齿类害虫严重损害农作物。啮齿类害虫的暴发风险模型往往没有包含足够的地理变异信息。栖息地在啮齿类害虫暴发风险中起着重要作用，因此迫切需要更多关于栖息地与作物保护之间关系的信息。本研究的目的是提供一张洞庭湖地区的暴发风险图，并了解啮齿类害虫暴发变异与栖息地分布之间的关系。洞庭湖地区的主要啮齿类害虫是东方田鼠（Microtus fortis）。这些害虫在暴发年份造成巨大破坏，最显著的是在2007年。通过分析栖息地适宜性与暴发风险之间的相关性（以种群密度和历史事件表示）来获取栖息地评估和生态细节。对于源-汇种群，2007年96.18%的东方田鼠灾害区域被适宜栖息地的10公里缓冲区覆盖。历史暴发频率和种群密度峰值与适宜栖息地覆盖的土地比例显著相关（分别为r = 0.68，P = 0.04和r = 0.76，P = 0.03）。东方田鼠种群在暴发年份往往会迁移约10公里。在此，我们提出一种实用的栖息地评估方法，当与目标物种的生物学、生态学和行为等基本信息相结合时，可用于制定啮齿类害虫的综合虫害管理计划。
