Relationship between forest stand density, leaf surface area, and amount of photosynthesis and transpiration in the coastal black pine forest of Northern Kyushu

Young Jin Kim, Hisashi Yahata, Kiyoshi Kurosawa, Seok Gon Park

Research output: Contribution to journalArticle

Abstract

The leaf surface area, biomass of leaves, and amount of photosynthesis and transpiration of trees for the unit forest area were measured over the course of a year in the coastal black pine forests of various stand densities in Northern Kyushu. The hydraulic resistance, i.e., the ratio of water potential to transpiration rate, at the top and middle of long branches was also measured in summer, when the rate was high. As a result, as the forest stand density became lower, the leaf surface area, biomass of leaves, and photosynthesis amount increased. The amount of transpiration amount positively correlated with the amount of photosynthesis. There was no difference in hydraulic resistance between the top and middle of the branches, demonstrating that the ability of growth was maintained even at the ends of the branches. Here, further branch growth could be expected. With the lowering of the forest stand density by thinning the number of trees, forest stand growth will be promoted by the action of photosynthesis and the expected growth of branches.

Original languageEnglish
Pages (from-to)347-352
Number of pages6
JournalJournal of the Faculty of Agriculture, Kyushu University
Volume54
Issue number2
Publication statusPublished - Oct 1 2009

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Pinus nigra
stand density
Photosynthesis
forest stands
coniferous forests
transpiration
surface area
photosynthesis
Japan
leaves
Growth
fluid mechanics
Biomass
biomass
thinning (plants)
water potential
Forests
summer
Water

All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Agronomy and Crop Science

Cite this

Relationship between forest stand density, leaf surface area, and amount of photosynthesis and transpiration in the coastal black pine forest of Northern Kyushu. / Kim, Young Jin; Yahata, Hisashi; Kurosawa, Kiyoshi; Park, Seok Gon.

In: Journal of the Faculty of Agriculture, Kyushu University, Vol. 54, No. 2, 01.10.2009, p. 347-352.

Research output: Contribution to journalArticle

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