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作 者 ：陈绍栓

期 刊 ：生态学报 2002年 22卷 6期 页码：957~961

关键词：混交林；涵养水源功能；土壤肥力；

Keywords:Chinese fir, Altingia gracilides, mixture forest, water conservation function, soil fertility,

摘 要 ：对 2 5年生杉木细柄阿丁枫混交林进行研究表明 :混交林对土壤的物理性质、养分含量、酶活性和涵养水源功能均有良好的作用。混交林林分持水量为 2 2 1 2 .84 t/ hm2 ,杉木纯林为 1 84 1 .6 2 t/ hm2。混交林土壤水稳性团聚体组成、孔隙组成和水分状况均比纯林好 ;混交林土壤养分含量比纯林高 ,0～ 2 0 cm层有机质含量比纯林增加 80 .5 % ,全氮 ,全磷、水解性氮、速效磷和速效钾含量分别比纯林提高 2 8.8%、39.8%、32 .0 %、5 6 .6 %和 76 .8% ;混交林土壤酶活性比杉木纯林高 ,0～2 0 cm层转化酶、脲酶、酸性磷酸酶和过氧化氢酶活性分别比纯林增加 1 5 6 .1 %、72 .6 % .30 .0 %和 1 0 .3%。

Abstract:Chinese fir (Cunninghamia lanceolata (Lamb.) Hook.), a fast-growing, evergreen coniferous tree with high yield and excellent wood quality, is one of the most important tree species for timber production in south China. Because of its high commercial value, native broad-leaved and coniferous forests are often transformed into plantations of pure Chinese fir. The total plantation area of Chinese fir in China is around 9.11 million hectares. Because the area of Chinese fir plantations has expanded rapidly, suc...

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