| 放牧对荒漠草原短花针茅繁殖特性的影响 |
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| 引用本文： | 杜利霞,李青丰.放牧对荒漠草原短花针茅繁殖特性的影响[J].山西农业大学学报(自然科学版),2008,28(1):4-6. |
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| 作者姓名： | 杜利霞 李青丰 |
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| 作者单位： | 1. 山西农业大学,动物科技学院,山西,太谷,030801
2. 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： | 农业部草地资源重点实验室项目 |
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| 摘 要： | 对不同放牧强度下短花针茅荒漠草原建群植物——短花针茅的繁殖特性进行了研究。结果表明:短花针茅随着放牧强度的增加,生殖枝的分化率在降低,单位面积的种子产量在减少。实生苗在封育区有少数出现。随放牧强度的增加,短花针茅大株丛减少,中小株丛增加,这种"分丛"现象是其营养繁殖的方式。
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| 关 键 词： | 短花针茅 放牧强度 繁殖特性 |
| 文章编号： | 1671-8151(2008)01-0004-03 |
| 修稿时间： | 2007年5月11日 |
Effects of Grazing on Reproductive Characteristics of Stipa Breviflora in Desert Steppe |
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| DU Li-xia.Effects of Grazing on Reproductive Characteristics of Stipa Breviflora in Desert Steppe[J].Journal of Shanxi Agricultural University,2008,28(1):4-6. |
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| Authors: | DU Li-xia |
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| Abstract: | This paper investigated reproductive characteristics of Stipa breviflora under different grazing intensities in Stipa breviflora Desert steppe in Siziwang Banner of Inner Mongolia in 2004.The results were as follows: with the increase of grazing intensity,density of reproductive shoots/density of total shoots(%) and seed production decreased.Seedling could be observed only in no-grazing plot.With the increase of grazing intensity,the number of big clusters of Stipa breviflora reduced and small clusters increased,the phenomenon could be explained with the vegetative propagation mode of Stipa breviflora. |
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| Keywords: | Stipa breviflora Grazing intensity Reproductive characteristics |
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