杉木与米老排等阔叶树混交林的水源涵养功能

The Water Conservation Ability of the Forests of Cunninghamia lanceolata Mixed with Mytilaria laosensis and Other Broad-leaved Tree Species

对福建省尤溪县西城镇玉池至音头村之间公路沿线一重山营造的杉木分别与米老排、木荷、火力楠、闽粤栲行间混交林分水源涵养能力进行研究。结果表明:各林分地上部分持水量主要集中在林冠层,占林分地上部分持水量的71.2%~85.7%;林分总持水量主要集中在土壤层,0~40 cm土层持水量占林分总持水量的99%以上。依据林分总贮水量的大小,4种类型林分的水源涵养功能大小依次为杉木-闽粤栲>杉木-米老排>杉木-木荷>杉木-火力楠。

The study on the water conservation ability of the forests of Cunninghamia lanceolata mixed with Mytilaria laosensis,Schima superba,Michelia macclurei,and Castanopsis fissa on the mountains along highways from Yuchi Village to Yintou Village,Xicheng Town,Youxi County showed that the overground water holding capacity of each stand was concentrated in the forest canopy,accounting for 71.2%～85.7%; the stand total water holding capacity is concentrated in the soil layer,the water holding capacity of 0～40 cm depth soil accounted for more than 99% of the total water holding capacity.According to the stand total water holding ability,the water conservation function of the four species was C.lanceolata-Castanopsis fissa C.lanceolata-M.laosensis C.lanceolata-Schima superba C.lanceolata-Michelia macclurei.