不同放牧方式对大针茅草原啮齿动物群落多样性的影响

发布时间：2018-04-14 10:08

本文选题：放牧方式 + 大针茅草原　；参考：《内蒙古大学学报(自然科学版)》2017年03期

【摘要】：2013-2015年,采用标志重捕法对内蒙古呼伦贝尔大针茅草原,季节轮牧区、按月轮牧区、连续放牧区和过牧区4种不同放牧方式及禁牧区(对照区)下啮齿动物进行了专门调查,对啮齿动物群落结构、啮齿动物群落相似性和多样性特征进行了研究.结果表明:1.不同放牧使啮齿动物群落结构发生了一定的变化.放牧增加了啮齿动物数量,使优势种出现了差异.连续放牧区和过牧区优势种为草原黄鼠;按月轮牧、季节轮牧和禁牧区优势种为黑线仓鼠.2.不同的放牧方式导致了啮齿动物群落相似性不同。按月轮牧与季节轮牧相似性指数最大,连续放牧与过牧相似性指数最大;禁牧与过牧相似性指数最大.3.连续放牧和过牧增加了啮齿动物群落多样性,按月轮牧和季节轮牧降低了群落多样性.本研究认为,季节轮牧能够控制啮齿动物个体数量的同时可以降低啮齿动物群落多样性.
[Abstract]:From 2013 to 2015, a special survey was carried out on rodents in Hulunbeir prairie, seasonal ring pasturing area, lunar ring grazing area, continuous grazing area and overgrazing area, and rodents in forbidden pasturing area (control area).The structure of rodent community, similarity and diversity of rodent community were studied.The result shows that 1: 1.The rodent community structure was changed by different grazing.Grazing increased the number of rodents and caused differences in dominant species.The dominant species in continuous grazing area and over pasturing area were grassland yellow rat, and the dominant species in monthly rotation, seasonal rotation and forbidden grazing area were black line hamster. 2.Different grazing patterns lead to different similarity of rodent communities.Monthly rotation grazing and seasonal rotation grazing similarity index is the largest, continuous grazing and overgrazing similarity index is the largest, and forbidden grazing and overgrazing similarity index is the largest.Continuous grazing and overgrazing increased the diversity of rodent communities, decreased the diversity of rodent communities by monthly rotation and seasonal rotation.This study suggests that seasonal rotation grazing can control the individual rodent population and reduce the diversity of rodent communities.
【作者单位】：内蒙古农业大学草原与资源环境学院;草地资源教育部重点实验室;内蒙古自治区水利水电勘测设计院;
【基金】：公益性行业(农业)科研专项经费项目(201203041)
【分类号】：S812

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