| 载畜率对荒漠草原植物群落影响的研究 |
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| 引用本文： | 贾乐,赵萌莉,韩国栋,董亭,阿穆拉.载畜率对荒漠草原植物群落影响的研究[J].中国草地学报,2011,33(4). |
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| 作者姓名： | 贾乐 赵萌莉 韩国栋 董亭 阿穆拉 |
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| 作者单位： | 内蒙古农业大学生态环境学院,内蒙古呼和浩特,010019 |
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| 基金项目： | 国家自然科学基金项目(30860196,31070413,31070414); 农业部公益项目(200903060,201003019); 科技支撑项目(2008BAD95B03) |
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| 摘 要： | 对不同载畜率下短花针茅荒漠草原植物群落特征进行比较,结果表明:不同植物种群的盖度对载畜率的响应不同,无芒隐子草盖度在轻度放牧区最大,栉叶蒿盖度在7月份、8月份分别以中度放牧区和轻度放牧区最大;短花针茅、冷蒿、阿氏旋花、细叶葱、木地肤随载畜率增大高度下降明显,猪毛菜高度在四个载畜率下差异均不显著;随着载畜率的增大,植物群落生物量呈下降趋势,且重度放牧与不放牧、轻度放牧有显著差异;随着载畜率的增大,建群种、优势种地位改变不明显,但一年生的猪毛菜重要值增大,在重度放牧区达到最大并占据优势地位;Shannon-wiener指数、Simpson指数、Pielou均匀度指数均以轻度放牧区最大,Shannon-wiener指数、Simpson指数均为轻度放牧>中度放牧>重度放牧>不放牧,且不放牧与轻度放牧差异显著。
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| 关 键 词： | 荒漠草原 载畜率 多样性指数 重要值 |
Effects of Different Stocking Rate on Plant Community in Desert Steppe |
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| JIA Le,ZHAO Meng-li,HAN Guo-dong,DONG Ting,Amula.Effects of Different Stocking Rate on Plant Community in Desert Steppe[J].Chinese Journal of Grassland,2011,33(4). |
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| Authors: | JIA Le ZHAO Meng-li HAN Guo-dong DONG Ting Amula |
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| Institution: | JIA Le,ZHAO Meng-li,HAN Guo-dong,DONG Ting,Amula(College of Ecology and Environmental Science,Inner Mongolia Agricultural University,Hohhot 010019,China) |
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| Abstract: | Through the research on the compare of the characteristics of plant community under different stocking rates on Stipa breviflora in desert steppe,the results showed that the coverage of different plant populations had the different response to the different stocking rates,the coverage of Cleistogenes songorica under light grazing was the highest,and the highest coverages of Neopallasia pectinata in July and August were found in medium grazing areas and light grazing areas.The height of Stipa breviflora,Arte... |
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| Keywords: | Desert steppe Stocking rate Diversity index Importance value |
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