A simple method to estimate radiation interception by nursery stock conifers: a case study of eastern white cedar

A.A. Pronk, J. Goudriaan, E.S.C. Stilma, H. Challa

Research output: Contribution to journalArticleAcademicpeer-review

45 Citations (Scopus)

Abstract

A simple method was developed to estimate the fraction radiation intercepted by small eastern white cedar plants (Thuja occidentalis 'Brabant'). The method, which describes the crop canopy as rows of cuboids, was compared with methods used for estimating radiation interception by crops with homogeneous canopies and crops grown in rows. The extinction coefficient k was determined at different plant arrangements and an average k-value of 0.48 ± 0.03 (R2 = 0.89) was used in the calculations. Effects of changing plant characteristics and inter- and intra-row plant distances were explored. The fraction radiation intercepted that was estimated with the method for rows of cuboids was up to 20% and for row crops up to 8% lower than estimated with the method for homogeneous canopies at low plant densities and a LAI of 1. The fraction radiation intercepted by small plants of Thuja occidentals 'Brabant' was best estimated by the simple method described in this paper
Original languageEnglish
Pages (from-to)279-295
JournalNJAS Wageningen Journal of Life Sciences
Volume51
Issue number3
DOIs
Publication statusPublished - 2003

Keywords

  • thuja occidentalis
  • planting stock
  • canopy
  • interception
  • solar radiation
  • estimation
  • leaf-area index
  • lai-2000
  • photosynthesis
  • canopies
  • stands
  • model

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