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| 荒漠草原不同放牧制度群落多样性研究 | |
| 引用本文： | 闫瑞瑞,卫智军,韩国栋,王鹏飞,周忠义.荒漠草原不同放牧制度群落多样性研究[J].干旱区资源与环境,2007,21(7):111-115. |
| 作者姓名： | 闫瑞瑞 卫智军 韩国栋 王鹏飞 周忠义 |
| 作者单位： | 1. 内蒙古农业大学,呼和浩特,010019 2. 呼和浩特气象局,呼和浩特,010020 3. 牙克市免渡河镇畜牧兽医草原综合站,牙克市,022176 |
| 基金项目： | 内蒙古草业研究院草业专项 , 内蒙古农业大学校科研和教改项目 |
| 摘 要： | 在内蒙古苏尼特右旗荒漠草原,通过划区轮牧与自由放牧的比较试验,研究不同放牧制度下群落α多样性和β多样性。结果表明:①对照区、轮牧区和自由放牧区的植物种类丰富度和多样性均较前一年均有所增加,优势度指数除对照区有所增加,轮牧区和自由放牧区基本不变化;均匀度指数轮牧区和自由放牧区均略有下降。②物种丰富度指数与均匀度指数呈负相关,荒漠草原植物群落多样性更多地受丰富度的影响。③对照区、轮牧区和自由放牧区群落β多样性指数随取样面积增加而降低;荒漠草原在不放牧、自由放牧和划区轮牧下,轮牧区β多样性指数最高,其次为对照区和自由放牧区;④2004年轮牧区与自由放牧区的相似性系数为最高,其次为轮牧区与对照区;自由放牧区与对照区差异最大。到了2005年,除轮牧区与自由区的相似性系数降低外,轮牧区与对照区、自由区与对照区的相似性系数均有所增加。 |
| 关 键 词： | 荒漠草原 放牧制度 群落 α、β多样性 |
| 文章编号： | 1003-7578（2007）07-001-05 |
| 收稿时间： | 2006-05-30 |
| 修稿时间： | 2006-05-30 |
Study on Communities Diversity Different Grazing System in Desert Steppe |
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| YAN Rui-rui,WEI Zhi-jun,HAN Guo-dong,WANG Peng-fei,ZHOU Zhong-yi.Study on Communities Diversity Different Grazing System in Desert Steppe[J].Journal of Arid Land Resources and Environment,2007,21(7):111-115. | |
| Authors: | YAN Rui-rui WEI Zhi-jun HAN Guo-dong WANG Peng-fei ZHOU Zhong-yi |
| Institution: | 1. Inner Mongolia Agricultural University,Huhhot 010019; 2. Huhhot Weather Bureau,Huhhot 010020; 3. The station of Yakeshi Animal Veterinary And Grassland Science,Yakeshi 022176, China |
| Abstract: | The experiments of comparing rotational grazing,continuous grazing were conducted on desert steppe in Sunit Right Banner of Inner Mongolia.to Study the communitiesα-diversity and β-diversity of different grazing system in desert steppe.The results showed as follow: ①the plant species richness and diversity of check plot(CK),rotational grazing plot(RG) and continuous grazing plot(CG) were increased in later year comparing to in former year.The plant dominance of check plot(CK) was increased,but it was almost the same in RG and CG.The plant evenness index of the different three treatments were decreased in later year comparing to in former year.②The relation between the plant species richness and the plant evenness index was negative.Community diversity was dinstinctly affected by the richness of plant species.③The index of β-diversity of community decreased with the increasing quadrat size.The highest index of β-diversity of desert steppe was in rotational grazing(RG) system.The next indexes of β-diversity were check plot and continuous grazing(CG) plot.④The Morisita-Horn similarity coefficient in RG and CG were the highest,the next were the communities in RG and CK.The Morisita-Horn similarity coefficient in CK and CG were the lowest in 2004.however,in 2005,the Morisita-Horn similarity coefficient in RG and CK and in CG and CK were increased except that was decreased in RG and CG. |
| Keywords: | desert steppe grazing system community α β-diversity |
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