杉木人工林叶面积指数的变化

Abstract

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．

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

Xiang Wenhua;Lin Bai;Wu Yufang. THE CHANGE PATTERN OF LEAF AREA INDEX (LAI) IN CHINESE FIR PLANTATlONS[J]. , 1997, 33(zk2): 139-142.

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THE CHANGE PATTERN OF LEAF AREA INDEX (LAI) IN CHINESE FIR PLANTATlONS

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