Work

Comparison of Two Techniques for Measuring Surface Area of Conifer Needles

Year: 1975

Type: article

Abstract: Two approaches to estimating surface area of conifer needles were evaluated: an optical projection technique (optical planimeter) focusing light through a plane surface to a photocell, and covering the needle surface with an adhesive and a monolayer of glass beads and measuring weight increase. On 20 clusters of Douglas-fir foliage, the optical planimeter was more precise (95 percent confidence interval 0.6 cm² compared to 2.0 cm²), but the glass-bead method was judged slightly more accurate. However, a needle cross-sectional correction factor introduced to optical planimeter results improved accuracy. Forest Sci. 21:231-232.

Source: Forest Science

DOI: 10.1093/forestscience/21.3.231

Authors: Allan P. Drew, Steven W. Running

Institutions: University of Illinois Urbana-Champaign, Oregon State University

Language: English

Topic: Leaf Properties and Growth Measurement

Subfield: Plant Science

Field: Agricultural and Biological Sciences

Domain: Life Sciences

Open Access status: hybrid

Estimated APC paid: $2,690

OpenAlex ID: W3213955009

FWCI: 0.742

Cites:

Cited by: 18

Related to: 10