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从森林林冠层、林下枯落物层、土壤层3个生态作用层对冀北山地森林生态系统水文生态效应进行研究,运用层次分析与数学软件MATLAB相结合的方法,综合评价冀北山地落叶松桦木针阔混交林、山杨桦木阔叶混交林、油松蒙古栎针阔混交林3种主要森林植被类型的涵养水源功能的强弱,并进行了排序。结果为:落叶松桦木针阔混交林(0.348 4)>油松蒙古栎针阔混交林(0.334 1)>山杨桦木阔叶混交林(0.317 5)。事实证明,层次分析法是评价森林涵养水源功能的一种非常有效的数量化方法。
This paper studied the hydrological and ecological effects of forest ecosystem in mountainous area of north Hebei Province from three ecological function layers, including forest canopy, litter layer and soil layer. By using the method of AHP and MATLAB software, Pine birch coniferous-broadleaved mixed forest, birch birch broadleaved mixed forest, Pinus tabulaeformis and Mongolian oak coniferous and broad-leaved mixed forest three main types of forest water conservation function of the strength, and were sorted. The results were as follows: Larch birch conifer and broad-leaved mixed forest (0.348 4)> Pinus tabulaeformis and Mongolian oak coniferous and broad-leaved mixed forest (0.334 1)> aspen birch broad-leaved mixed forest (0.317 5). Facts have proved that AHP is a very effective quantitative method to evaluate the function of water conservation in forest.