Leaf area index (LAI) and gap fraction. A discussion

IF 0.7 4区农林科学 Q3 FORESTRY

Baltic Forestry Pub Date : 2023-12-01 DOI:10.46490/bf715

Andres Kuusk

引用次数: 0

Abstract

Methodological aspects of estimating leaf area from gap fraction measurements are discussed. Instead of the common practice of linking in the Beer-Lambert law leaf area index and clumping factor together, the clumping factor and Ross-Nilson geometry function as two structure parameters should be combined into the effective geometry function, which considers both the leaf angle distribution and clumping/regularity of foliage in the expression of the gap fraction of a vegetation layer. Key words: leaf area index; foliage clumping; gap fraction; LAI-2000; G-function

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叶面积指数（LAI）和间隙率。讨论

从间隙分数测量估计叶面积的方法学方面进行了讨论。将聚类因子和Ross-Nilson几何函数作为两个结构参数合并为有效的几何函数，而不是将Beer-Lambert定律中的叶面积指数和聚类因子联系在一起，在表达植被层间隙分数时既考虑了叶片角度分布，又考虑了叶片的聚类/规律性。关键词:叶面积指数;树叶聚集;分数差距;lai - 2000;准备功能

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来源期刊

Baltic Forestry 农林科学-林学

CiteScore

1.60

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： The journal welcomes the original articles as well as short reports, review papers on forestry and forest science throughout the Baltic Sea region and elsewhere in the area of boreal and temperate forests. The Baltic Sea region is rather unique through its intrinsic environment and distinguished geographical and social conditions. A temperate climate, transitional and continental, has influenced formation of the mixed coniferous and deciduous stands of high productivity and biological diversity. The forest science has been affected by the ideas from both the East and West. In 1995, Forest Research Institutes and Universities from Estonia, Latvia and Lithuania joined their efforts to publish BALTIC FORESTRY.