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作 者 ：项文化 林柏 吴迂芳

期 刊 ：林业科学 1997年 33卷 zk2期 页码：139-142

关键词：杉木；叶面积指数；立地类型；密度；

Keywords:Chinese fir, Leaf area index (LAI), Site type, Density,

摘 要 ：研究了杉木中心产区和丘陵扩大栽培区中不同立地类型、不同密度、不同生育阶段杉木人工林叶面积指数的变化规律。结果表明：杉木人工林叶面积指数与年龄存在二次抛物线关系，林分年龄为19年时达到最大值。随林分密度增大叶面积指数增大，最终趋于一定数量水平。立地条件越好，叶面积指数越大。间伐对林木的生长量有着积极作用，叶面积指数能很快恢复到原有的数量水平。

Abstract:Based on data from 92 permanent plots and 283 sample trees of Chinese fir，thechange pattern of LAI at different density，age and site type in two regions was ana-lyzed.The results showed that the relation between LAI and age can be expressed by the formula：LAI=—1.669+1.040a—0。027a² and there was one point of LAI culmination at the age of 19．With increasing of stands density，LAl increases and ultimately reaches to a certain value．The better site type is，the higher LAI gets．Intermediate cutting has a positive effect on trees growth and LAI can restore as before in a specific time after intermediate cutting．

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