LaiPen LP 100 - a new device for estimating forest ecosystem leaf area index compared to the etalon: A methodologic case study

Jakub Černý, Jan Krejza, Radek Pokorný and Pavel Bednář
Additional contact information
Jakub Černý: Forestry and Game Management Research Institute, Strnady, Opočno Research Station, Opočno, Czech Republic
Jan Krejza: Global Change Research Institute of the Czech Academy of Sciences, Brno, Czech Republic 4 Centre MendelGlobe, Faculty of Forestry and Wood Technology, Mendel University in Brno, Brno, Czech Republic
Radek Pokorný: Department of Silviculture, Faculty of Forestry and Wood Technology, Mendel University in Brno, Brno, Czech Republic
Pavel Bednář: Forestry and Game Management Research Institute, Strnady, Opočno Research Station, Opočno, Czech Republic

Journal of Forest Science, 2018, vol. 64, issue 11, 455-468

Abstract: Fast and precise leaf area index (LAI) estimation of a forest stand is frequently needed for a wide range of ecological studies. In the presented study, we compared side-by-side two instruments for performing LAI estimation (i.e. LaiPen LP 100 as a "newly developed device" and LAI-2200 PCA as the "world standard"), both based on indirect optical methods for performing LAI estimation in pure Norway spruce (Picea abies (Linnaeus) H. Karsten) stands under different thinning treatments. LAI values estimated by LaiPen LP 100 were approximate 5.8% lower compared to those measured by LAI-2200 PCA when averaging all collected data regardless of the thinning type. Nevertheless, when we considered the differences among LAI values at each measurement point within a regular grid, LaiPen LP 100 overestimated LAI values compared to those from LAI-2200 PCA on average by 1.4%. Therefore, both instruments are comparable. Similar LAI values between thinning from above (A) and thinning from below (B) approaches were indirectly detected by both instruments. The highest values of canopy production index and leaf area efficiency were observed within the stand thinned from above (plot A).

Keywords: LAI-2200 PCA; indirect LAI; Norway spruce; thinning; canopy production index; leaf area efficiency (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
http://jfs.agriculturejournals.cz/doi/10.17221/112/2018-JFS.html (text/html)
http://jfs.agriculturejournals.cz/doi/10.17221/112/2018-JFS.pdf (application/pdf)
free of charge

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:caa:jnljfs:v:64:y:2018:i:11:id:112-2018-jfs

DOI: 10.17221/112/2018-JFS

Access Statistics for this article

Journal of Forest Science is currently edited by Mgr. Ilona Procházková

More articles in Journal of Forest Science from Czech Academy of Agricultural Sciences
Bibliographic data for series maintained by Ivo Andrle ().