| 陇东黄土高原沟壑区水保林有效覆盖率及其确定方法 |
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| 引用本文： | 卞义宁 吕晓霞. 陇东黄土高原沟壑区水保林有效覆盖率及其确定方法[J]. 中国水土保持, 1998, 0(3): 9-10 |
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| 作者姓名： | 卞义宁 吕晓霞 |
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| 作者单位： | 甘肃省平凉地区水土保持科学研究所 |
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| 摘 要： | 通过对陇东黄土高原沟壑区水土保持林系统的分析,结合有关水保林科研成果,认为水保林有效覆盖率是指在一定防护范围内土壤流失量等于允许流失量时的林木覆盖率;应用王秋生等人的研究模型计算出陇东黄土高原沟壑区水保林有效覆盖率为43.6%.
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| 关 键 词： | 水土保持林 有效覆盖率 允许流失量 黄土高原 陇东 |
Efficient Coverage Rate of Forest for Soil and Water Conservation in Gullied Region of the Loess Plateau in Eastern Gansu Province and Its Determination Method |
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| Abstract: | Through analysing the system of forest for soil and water conservation in gullied region of the Loess Plateau in eastern Gansu Province and taking advantage of the scientific achievements about the forest for soil and water conservation, the authors expound that efficient coverage rate of forest for soil and water conservation is defined as the forest coverage when the soil loss amount in a definite scope equals the permitted value. Using the model of Wang Qiusheng et al. the efficient coverage rate of forest for soil and water conservation in gullied region of the Loess Plateau in eastern Gansu Province is calculated to be about 43% . |
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| Keywords: | forest for soil and water conservation efficient coverage rate soil loss amount permitted the Loess Plateau eastern Gansu Province |
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