Claim · model-written summary
Under an oscillating irrigation system the inner rows may receive only a fraction of the water received by border trees, which may partly explain the edge effect.
PopulusNot reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingDirectionValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In small, dense and open-sided plantings of hybrid poplars, the edge effect extended through several rows, tree mortality increased and diameter at breast height (DHB), dry weight of individual trees, foliage weight, and leaf area index decreased from the border row to the center rows”
e2“When an oscillating irrigation system is used, the inner rows may receive only a fraction of the water border trees receive”
e3“This may be partly responsible for the extent of "edge effect" in this and similar studies”
Title
Small plots with unplanted plot border can distort data in biomass production studies
J. Zavitkovski Canadian Journal of Forest Research 1981. doi:10.1139/x81-002
Other claims from this paper (6)
- Observation The edge effect extended through several rows in small, dense and open-sided hybrid poplar plantings.
- Association Tree mortality increased in small, dense and open-sided hybrid poplar plantings with the edge effect.
- Association Diameter at breast height, dry weight of individual trees and foliage weight decreased from the border row to the center rows.
- Association Leaf area index decreased from the border row to the center rows.
- Mechanism Edge trees next to unplanted border trees tend to spread outward and intercept solar radiation from a larger area, which may underlie the edge effect.
- Recommendation Some ways of reducing the edge effect in production studies of hybrid poplars are proposed.