NDLI: Use of Digital Photography for Analysis of Canopy Closure

Content Provider	Springer Nature Link
Author	Guevara Escobar, A. Tellez, J. Gonzalez Sosa, E.
Copyright Year	2005
Abstract	The relationships between trees and understory crops are very important in agroforestry systems. Also, above ground interactions can be related to canopy structure. However, measurements of canopy structural parameters, either destructive or indirect, are time-consuming or prohibitively expensive. The present work explored the use of digital photography as a simple method to characterise the extent of canopy closure (CC), defined as the area of tree canopies projected onto the horizontal ground surface beneath, and expressed as a percentage of the ground covered. Measurements were made in two Eucalyptus (Eucalyptus nitens, Deane and Maiden) plantations and a subtropical mixed legume woodland dominated by Albizia (Albizia sp), Kidneywood (Eysenhardtia sp.) and Desert Fern (Lysiloma sp.). Images were captured at dawn to minimise light scattering and the number of sunlit foliage elements. Mean CC estimates provided by analysis of images obtained using digital cameras with contrasting performance, a Kodak DC-120 and a Canon EOS D1, were similar in precision and accuracy both between the two cameras and to those provided by a Li-Cor LAI-2000 canopy analyser. Bias between the estimates provided by the Kodak and Canon cameras was –0.02, between the Kodak and LAI-2000 was –0.07 and between the Canon and LAI-2000 was –0.05. Data from a pruning experiment using alder also demonstrated the repeatability of estimates obtained with a photographic method using the Kodak camera. The number of ring sensors within the LAI-2000 used to estimate CC affected agreement between the photographic method and the LAI-2000.
Starting Page	175
Ending Page	185
Page Count	11
File Format	PDF
ISSN	01674366
Journal	Agroforestry Systems
Volume Number	65
Issue Number	3
e-ISSN	15729680
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2005-07-07
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Canopy analyser Canopy openness Canopy structure LAI-2000 Agriculture Forestry
Content Type	Text
Resource Type	Article
Subject	Forestry Agronomy and Crop Science

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Pasture production and composition under poplar in a hill environment in New Zealand

Evaluation of digital hemispherical photography and plant canopy analyser for measuring Vegetation area index of orange orchards

Use of digital photography for analysis of canopy closure

Calibration of LAI-2000 canopy analyser with leaf area index in a young eucalypt stand

Microclimate in agroforestry systems in central Amazonia: does canopy closure matter to soil organisms?

Evaluation of digital hemispherical photography and plant canopy analyser for measuring Vegetation area index of orange orchards

Developing a canopy closure model to predict overstorey/understorey relationships in Pinus radiata silvopastoral systems

Contents Volume 49 2000

Author index Volume 49 2000

Use of Digital Photography for Analysis of Canopy Closure

Similar Documents

Pasture production and composition under poplar in a hill environment in New Zealand

Evaluation of digital hemispherical photography and plant canopy analyser for measuring Vegetation area index of orange orchards

Use of digital photography for analysis of canopy closure

Calibration of LAI-2000 canopy analyser with leaf area index in a young eucalypt stand

Microclimate in agroforestry systems in central Amazonia: does canopy closure matter to soil organisms?

Evaluation of digital hemispherical photography and plant canopy analyser for measuring Vegetation area index of orange orchards

Developing a canopy closure model to predict overstorey/understorey relationships in Pinus radiata silvopastoral systems

Contents Volume 49 2000

Author index Volume 49 2000

Use of Digital Photography for Analysis of Canopy Closure