| 不同放牧强度高寒草甸种群优势度的动态变化 |
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| 引用本文： | 徐志伟. 不同放牧强度高寒草甸种群优势度的动态变化[J]. 青海大学学报, 2003, 21(6): 4-6 |
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| 作者姓名： | 徐志伟 |
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| 作者单位： | 青海大学农牧学院,青海,西宁,810003 |
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| 摘 要： | 对不同放牧强度下高寒草甸草本植物不同种群的优势度变化进行了试验观察。结果表明,放牧强度不同,优势度值大的植物种类也不同,且在不同处理之间和年际之间发生变化。随着放牧强度的降低,禾本科等优良牧草在优势度较大的植物种类中所占的比例逐渐增加;同种植物的优势度也随着放牧强度的加重或减轻而发生改变。
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| 关 键 词： | 放牧强度 高寒草甸 种群 优势度 |
| 文章编号： | 1006-8996(2003)06-0004-03 |
| 修稿时间： | 2003-09-02 |
The dynamic change on preponderance degree of population for different stocking intensity in Alipine Meadow |
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| XU Zhi-wei. The dynamic change on preponderance degree of population for different stocking intensity in Alipine Meadow[J]. Journal of Qinghai University(Natural Science), 2003, 21(6): 4-6 |
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| Authors: | XU Zhi-wei |
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| Abstract: | This paper studied the dynamic change on preponderance degree of population for different stocking intensity in Alipine Meadow.The results showed that the species and preponderance degree are change in the different dealing and between years when stocking intensity is change.When stocking intensity reduce the rate of excellent grazing increase by degrees.The preponderance degree of same kind of plant is also change with the increasing or reduces of stocking intensity. |
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| Keywords: | stocking intensity Alpine Meadow population preponderance degree |
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