细柄阿丁枫杉木混交林的水源涵养功能研究

Study on the Water Conservation Function of Altingia gracilipes and Cunninghamia lanceolata Mixed Forest

杉木萌芽林改造成的细柄阿丁枫杉木混交林的水源涵养功能研究结果表明 :混交林的水源涵养能力有较大程度提高 ,其林冠层和枯枝落叶层的持水量分别比杉木纯林高 17 0 %和 5 0 32 % ,且土壤入渗速度加快 ,蓄水能力提高 ,0～ 40cm土壤层的蓄水量约为杉木纯林的 1 7倍 。

The results show that the capacity of water conservation of Altingia gracilipes and Cunninghamia lanceolata mixed forest,remade from the sprout forest of C.lanceolata,considerably increases,the water-holding content of the canopy layer and litter layer is 17.0% and 50.32%,respectively larger than that of C.lanceolata pure forest and the water-storing content of the soil layer(0～40cm) is above 1.7 times that of C.lanceolata pure forest,which possesses some reference value for remaking C.lanceolata low-yield forests and planning to manage water conservation forests afterwards.