| 内蒙古冷蒿小禾草放牧草原退化与恢复对策研究 |
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| 引用本文： | 赵彩霞,郑大玮. 内蒙古冷蒿小禾草放牧草原退化与恢复对策研究[J]. 草业学报, 2004, 13(1): 9-14 |
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| 作者姓名： | 赵彩霞 郑大玮 |
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| 作者单位： | 中国农业大学资环学院,北京,100094 |
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| 基金项目： | 国家科技攻关项目 , 国家重点基础研究发展计划(973计划) |
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| 摘 要： | 对不同围栏年限放牧草原的研究结果表明,冷蒿重要性随着围栏时间的增加呈先增后降的趋势;地上部总干物重、植被总覆盖度、植物平均高度与围栏时间呈负相关变化.在全年性放牧草地中,以上指标均低于围栏放牧草地.植物多样性指数与均匀性指数与围栏时间呈正相关关系.由此提出了遵循生态学原理恢复退化草地的几种措施.
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| 关 键 词： | 围栏放牧草地 冷蒿草原 群落特征 退化草地恢复对策 内蒙古 冷蒿 禾草 放牧草地 草原退化 恢复对策 研究 strategies restoration rangeland Artemisia Mongolia 退化草地 生态学原理 正相关关系 均匀性指数 多样性指数 指标 负相关变化 平均高度 |
| 文章编号： | 1004-5759(2004)01-0009-06 |
Inner Mongolia Artemisia frigida degraded rangeland and restoration strategies |
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| ZHAO Cai-xia,ZHENG Da-wei. Inner Mongolia Artemisia frigida degraded rangeland and restoration strategies[J]. Acta Prataculturae Sinica, 2004, 13(1): 9-14 |
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| Authors: | ZHAO Cai-xia ZHENG Da-wei |
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| Abstract: | A study was conducted within rangeland fenced for different numbers of years on Inner Mongolia steppe land. The results showed that with fenced time increasing, the importance value of Artemisia frigida increased, then decreased. Changes in total aboveground dry matter, overall vegetation coverage, and average plant height all showed negative correlations with fenced time. For year round unfenced grazing land, the indexes named above were all lower than for fenced grazing land. Plant diversity and evenness indices showed positive correlations with fenced time. It is therefore suggested that measures in line with ecological principles for the restoration of degraded grassland be adhered to. |
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| Keywords: | fenced rangeland Artemisia frigida grassland community properties degraded grassland restoration strategies |
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