Review of methods for in situ leaf area index (LAI) determination Part II. Estimation of LAI, errors and sampling

被引：738

作者：

Weiss, M

Baret, F

Smith, GJ

Jonckheere, I

Coppin, P

机构：

[1] NOVELTIS, F-31520 Ramonville St Agne, France

[2] INRA, CSE, F-84914 Avignon, France

[3] US EPA, New York, NY 10007 USA

[4] Katholieke Univ Leuven, Dept Land Management, B-3000 Louvain, Belgium

来源：

AGRICULTURAL AND FOREST METEOROLOGY | 2004年 / 121卷 / 1-2期

关键词：

leaf area index; gap fraction; clumping; leaf orientation; ground measurements; sampling scheme;

D O I：

10.1016/j.agrformet.2003.08.001

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

The theoretical background of modeling the gap fraction and the leaf inclination distribution is presented and the different techniques used to derive leaf area index (LAI) and leaf inclination angle from gap fraction measurements are reviewed. Their associated assumptions and limitations are discussed, i.e., the clumping effect and the distinction between green and non-green elements within the canopy. Based on LAI measurements in various canopies (various crops and forests), sampling strategy is also discussed. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：37 / 53

页数：17

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