山西省农田啮齿动物多样性研究

Rodent diversity in the farmlands of Shanxi Province

为了掌握山西省不同地区农田啮齿动物的多样性,探索其与环境因子的关系,本文采用笼捕法和夹捕法相结合的方法,对山西省11个市的17个县(市、区)的啮齿动物进行了研究。结果表明,临汾市隰县农田的啮齿动物捕获率(C)最高,达到14.77%,该地的啮齿动物多样性指数(H′)也最高,为1.811 1;朔州市朔城区的多样性指数最低,为0.600 1。每个变量的相关性分析结果表明,研究区纬度与农田啮齿动物的捕获率、物种丰富度指数(R)、多样性指数和均匀度指数(J′)均呈极显著负相关关系,而与优势度指数(D)呈极显著正相关,说明纬度可能是影响啮齿动物多样性的一个重要因子。

The relationships between the diversity of rodents in the farmland and environmental factors were explored in different regions of Shanxi Province, and the snap-trap and cage-trap methods were used in 17 counties(cities and districts) of 11 cities in Shanxi Province. The results showed that the rodent capture rate(C) of Xi County in Linfen City was the highest, reaching 14.77%;the rodent diversity index(H′) of Xi County was also the highest(1.811 1). In Shuocheng District of Shuozhou City, the lowest diversity index was observed(0.600 1). The correlation analysis of different variables indicated that the latitude of the study area was significantly negatively correlated with the capture rate, species richness index(R), diversity index and evenness index(J′) of farm rodents, but significantly positively correlated with the dominance index(D), indicating that latitude might be an important factor affecting the diversity of rodents.