| 黄土高原森林植被水土保持机理研究 |
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| 引用本文： | 吴钦孝,刘国彬.黄土高原森林植被水土保持机理研究[J].林业科学,2001,37(5):140-144. |
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| 作者姓名： | 吴钦孝 刘国彬 |
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| 作者单位： | 中国科学院水利部水土保持研究所 |
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| 基金项目： | 国家重大基础“973”研究项目资助 (G2 0 0 0 0 186 0 0 ) |
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| 摘 要： | 土壤侵蚀是造成环境退化的一个主要因素。长期以来因不合理的利用自然资源 ,日积月累的结果使得植被生存的环境受到极大的破坏 ,导致植被衰退 ,引发了严重的水土流失 ;水土流失的不断加剧 ,破坏了土地的生产力 ,土壤肥力降低 ,土壤蓄水能力减弱 ,植被生存的环境进一步恶化 ,如此以往使生态环境陷入恶性循环状态。黄土高原严重的水土流失与该区植被覆被率低有密切的关系。据“七五”统计 ,主要水土流失区现有森林面积约 2 5× 1 0 6ｈｍ2 ,其中人工林占 40 %左右 ,有林地森林覆盖率仅为 9 3% ,而且能发挥水土保持功能的森林覆被率仅为 7 0 %…
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| 关 键 词： | 黄土高原 森林植被 水土保持 土壤侵蚀 |
| 修稿时间： | 2000年7月10日 |
MECHANISM ON SOIL AND WATER CONSERVATION OF FOREST VEGETATION ON THE LOESS PLATEAU |
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| Zhao Hongyan\ Wu Qinxiao,Liu Guobin.MECHANISM ON SOIL AND WATER CONSERVATION OF FOREST VEGETATION ON THE LOESS PLATEAU[J].Scientia Silvae Sinicae,2001,37(5):140-144. |
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| Authors: | Zhao Hongyan\ Wu Qinxiao Liu Guobin |
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| Abstract: | Soil and water conservation mechanism of vegetation has been explained through analysing the effects of vegetation at different layers on rainfall. The vegetation cause the result of reduction of runoff amount,runoff energy and runoff carrying sediment. and vegetation improving soil to make a great role of soil and water conservation because of vegetation increasing resistant soil erosion. The research point out soil and water conservation function of vegetation is due to using out runoff amount continually by vegetation at different layers, and the accumulation effects of vegetation at different layers lead quickly reduction of soil erosion amount as to realize bring function of vegetation soil and water conservation into full play. |
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| Keywords: | Loess plateau Soil and water conservation Mechanism Forest vegetation |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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