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%.
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% .
出处
《中国水土保持》
1998年第3期9-10,共2页
Soil and Water Conservation in China
关键词
水土保持林
有效覆盖率
允许流失量
黄土高原
陇东
forest for soil and water conservation efficient coverage rate soil loss amount permitted the Loess Plateau eastern Gansu Province
