| 青藏高原"黑土滩"形成的自然因素与生物学机制 |
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| 引用本文： | 李希来.青藏高原"黑土滩"形成的自然因素与生物学机制[J].草业科学,2002,19(1):20-22. |
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| 作者姓名： | 李希来 |
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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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| 基金项目： | 国家自然科学基金;39960053; |
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| 摘 要： | “黑土滩”的形成有其特定的海拔范围、区域特征和独特的气象条件。整个过程的主导因素是人为过度放牧,导致秃斑地的形成;害鼠破坏、风蚀、水蚀和冻融剥离等自然因素起到加速“黑土滩”的形成作用。
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| 关 键 词： | “黑土滩” 形成机制 高寒草甸 退化草地 青藏高原 生物学机制 自然因素 |
| 文章编号： | 1001-0629(2002)01-20-03 |
Natural factors and formative mechanism of "Black Beach" formed on grassland in Qinghai-Tibetan plateau |
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| LI Xi-lai.Natural factors and formative mechanism of "Black Beach" formed on grassland in Qinghai-Tibetan plateau[J].Pratacultural Science,2002,19(1):20-22. |
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| Authors: | LI Xi-lai |
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| Abstract: | Based on current investigation results and information available, the present situation, district distribution, natural factors and formative mechanism of "Black Beach" formed on grassland in Qinghai Tibetan plateau were discussed. "Black Beach" was formed under certain altitude range, district and meteorological conditions. The dominant factor of its formation was overgrazing, however, the factors of rodent damage, wind and rain erosion sped up the formation of "Black Beach". |
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| Keywords: | Black Beach" formative mechanism alpine meadow degraded grassland |
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