A MODEL OF CANOPY PHOTOSYNTHESIS AND WATER-USE INCORPORATING A MECHANISTIC FORMULATION OF LEAF CO2 EXCHANGE

被引：103

作者：

MCMURTRIE, RE ^{[1
]}

LEUNING, R ^{[1
]}

THOMPSON, WA ^{[1
]}

WHEELER, AM ^{[1
]}

机构：

[1] CSIRO, DIV FORESTRY, CANBERRA, ACT 2600, AUSTRALIA

来源：

FOREST ECOLOGY AND MANAGEMENT | 1992年 / 52卷 / 1-4期

基金：

澳大利亚研究理事会;

关键词：

D O I：

10.1016/0378-1127(92)90505-4

中图分类号：

S7 [林业];

学科分类号：

0829 ; 0907 ;

摘要：

A model of the carbon uptake and water balance of forest stands is described where leaf photosynthesis is represented by a mechanistic model of photosynthesis by C3 plants. Data are presented to support an empirical relationship linking stomatal conductance, photosynthesis, relative humidity and ambient CO2 concentration. The model was applied to stands of Pinus ra&ata subject to extremes of water and nutrient availability. Simulated water storage in the root zone agreed with measurements conducted over a 5 year period. Simulated and measured seasonal patterns of water use reached maximum rates of approximately 7 mm day-1 in summer for irrigated stands with projected leaf area indices of approximately 8. Simulated annual net photosynthesis (net of photorespiration and daytime foliar respiration) ranged from approximately 17 Mg C ha-1 year-1 for control stands to approximately 45 Mg C ha-1 year-1 for irrigated and fertilised stands.

引用

页码：261 / 278

页数：18

共 47 条

[1] STATE-OF-THE-ART OF MODELS OF PRODUCTION DECOMPOSITION LINKAGES IN CONIFER AND GRASSLAND ECOSYSTEMS [J].