| 山地草地凋落物分解与持水力的研究 |
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| 引用本文： | 张建利,张文,毕玉芬. 山地草地凋落物分解与持水力的研究[J]. 草业科学, 2008, 25(3): 108-110 |
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| 作者姓名： | 张建利 张文 毕玉芬 |
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| 作者单位： | 云南农业大学动物科学学院,云南,昆明,650201;云南农业大学动物科学学院,云南,昆明,650201;云南农业大学动物科学学院,云南,昆明,650201 |
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| 基金项目： | 云南省自然科学基金，农业部草地农业生态系统学重点开放实验室资助项目 |
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| 摘 要： | 以云南马龙县退化山地草地为研究对象,对封育2年草地的凋落物分解速率、储水能力进行了分析.结果表明,随封育时间的推移,草地凋落物分解速率有所降低.在封育条件下,草地凋落物的分解速率显著高于自然放牧草地(F=7.647;P<0.01).随凋落物分解时间的推移,其最大持水率呈抛物线状.
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| 关 键 词： | 山地草地 凋落物分解 凋落物最大持水率 |
| 文章编号： | 1001-0629（2008）03-0108-03 |
| 收稿时间： | 2007-12-28 |
| 修稿时间： | 2007-12-28 |
The litter decomposition and maximum water holding rate in mountain grassland |
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| ZHANG Jian-li,ZHANG Wen,BI Yu-fen. The litter decomposition and maximum water holding rate in mountain grassland[J]. Pratacultural Science, 2008, 25(3): 108-110 |
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| Authors: | ZHANG Jian-li ZHANG Wen BI Yu-fen |
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| Abstract: | The litter decomposition speed was an important ingredient of the grassland ecological system.The experiment was conducted in Malong county of Yunnan province.The degenerated grassland was selected as experimental object.The litter decomposition speed and maximum water holding rate of litter decomposition of degenerated grassland was studied after two years enclosure.The results showed that the litter decomposition speed of enclosed condition was significantly higher than the grazing grassland condition(F=7.647;P<0.01).The maximum water holding rate was increased with the litter decomposition,however,it begun to decrease after reached the peak value of the maximum water holding rate.The peak value of enclosed condition was earlier than grazing grassland condition. |
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| Keywords: | mountain grassland decomposition of leaf litter maximum water holding rate of the litter |
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