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闽江是福建第一大江，其流域面积约占全省土地总面积的一半．合理开发和利用闽江水资源，对我省工农业生产具有重大意义．本文对闽江十余种森林类型的水源涵养功能进行了初步探讨，以求为闽江流域的林业规划及水源涵养林的树种选择提供依据．结果表明：各类天然林总持水量为荒山荒地的１．１６～１．４０倍，土壤初渗值和稳渗值分别为荒山荒地的９．５３～１４．５倍和８．７２～１０．３７倍．人工林中的柳杉、鄂西红豆、马尾松、格氏栲和细柄阿丁枫总持水量为荒山荒地的１．１１～１．３２倍，土壤初渗值和稳渗值分别为荒山荒地的３．３９～９．６７倍和３．１０～９．１０倍，是比较理想的水源涵养林．
Minjiang River is the largest river in Fujian, and its drainage area accounts for about half of the total area of the province’s land. Rational development and utilization of Minjiang water resources, the province’s industrial and agricultural production of great significance. In this paper, the water conservation function of more than ten forest types in Minjiang River Basin was discussed in order to provide the basis for the forestry planning of Minjiang River Basin and the selection of tree species for water conservation forest. The results showed that the total water holding capacity of all kinds of natural forests was 1.16-1.40 times of the barren hills and wastelands, and the initial soil infiltration and soil infiltration values were 9.53-14.5 times and 8.72-10 .37 times. The total water volume of Cryptomeria, West Masson, Pinus massoniana and Germplasm resources in the plantation was 1.11-1.32 times that of barren mountain and wasteland. The initial permeability and soil infiltration value of the soil were respectively barren Wasteland 3.39 ~ 9.67 times and 3.10 ~ 9.10 times, is an ideal water conservation forest.