马尾松阔叶树混交异龄林水源涵养功能的研究

Study on Water Conservation Function of Mixed Uneven-aged Forest Consisted of Chinese Red Pine and Broadleaf

[目的]为了研究马尾松阔叶树混交异龄林的水源涵养功能。[方法]通过对马尾松林下套种细柄阿丁枫形成的混交复层异龄林与马尾松纯林的地上部分和土壤层持水能力的比较,研究了混交异龄林的水源涵养功能。[结果]林冠层持水量混交林与纯林相当;林下植被层持水量混交林为13.00t/hm2,纯林为25.74t/hm2;枯枝落叶层持水量混交林为11.22t/hm2,纯林为24.20t/hm2;土壤0～40cm层持水量混交林为1724.2t/hm2,纯林为1591.6t/hm2。林分总持水量混交林为1799.2t/hm2,纯林为1691.3t/hm2。[结论]马尾松细柄阿丁枫混交复层异龄林的水源涵养能力明显高于马尾松纯林。

[Objective] The aim of research was to study the water conservation function of mixed uneven-aged forest consisted of Chinese red pine and broadleaf. [Method] Water conservation function of mixed uneven-aged forest was studied through comparing the water holding capacities on the aerial part and the soil layer from the mixed and compound storied uneven-aged forest formed by interplanting A ltingia gralilipes under Chinese red pine forest with that from the pure forest of Chinese red pine. [Result] The water-holding capacities of forest canopy layer of mixed and pure forest were equivalent. As for the water-holding capacities in vegetation layer under forest, the mixed forest and pure forest were 13.00 t/hm^2 and 25.74 t/hm^2, resp., as for the water-holding capacities in forest floor layer, the mixed forest and pure forest were 11.22 t/hm^2 and 24.20 t/hm^2 resp,, as for the water-holding capacities in soil layer （ 0～40 cm）, the mixed forest and pure forest were 1 724.2 t/hm^2 and1591.6 t/hm^2 resp. and the total water-holding capacities in forest stand, the mixed forest and pure forest were 1 799.2 t/hm^2 and 1691.3 t/hm^2 resp, [Conclusion] Water holding capacities of mixed and compound storied uneven-aged forest formed by undersowing A ltingia gralilipes under Chinese red pine forest were higher than that of pure forest of Chinese red pine significantly.