Estimating forest LAI profiles and structural parameters using a ground-based laser called 'Echidna®'

被引：204

作者：

Jupp, David L. B. ^{[1
]}

Culvenor, D. S. ^{[2
]}

Lovell, J. L. ^{[1
]}

Newnham, G. J. ^{[2
]}

Strahler, A. H. ^{[3
]}

Woodcock, C. E. ^{[3
]}

机构：

[1] CSIRO Marine & Atmospher Res, Canberra, ACT 2611, Australia

[2] CSIRO Sustainable Ecosyst, Clayton, Vic, Australia

[3] Boston Univ, Dept Geog & Environm, Boston, MA 02215 USA

来源：

TREE PHYSIOLOGY | 2009年 / 29卷 / 02期

关键词：

foliage profile; forest measurement; laser scanning; leaf area index; vegetation canopies; vegetation structure; LEAF-AREA INDEX; CANOPY STRUCTURE; HEMISPHERICAL PHOTOGRAPHY; OPTICAL MEASUREMENTS; ANGLE DISTRIBUTION; PLANT CANOPIES; GAP FREQUENCY; VEGETATION; RADIATION; TRANSMITTANCE;

D O I：

10.1093/treephys/tpn022

中图分类号：

S7 [林业];

学科分类号：

0829 ; 0907 ;

摘要：

There are many techniques for Measuring leaf area index (LAI) and forest canopy foliage profiles but their accuracy is questionable. This paper briefly reviews current methods of estimating forest LAI and presents a novel, ground-based laser system, Echidna (R) that call make it wide range of measurements of forest structure, including LAI. Here, use of the system to provide field data and derived gap probabilities in the form of a 'hemispherical photograph with range' is demonstrated. The results show consistency and reproducibility and do not depend on special conditions for the natural light field.

引用

页码：171 / 181

页数：11

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