蒸腾速率、阻力与叶内外水势和光强关系的研究

›› 1991, Vol. 27 ›› Issue (5): 545-549.

蒸腾速率、阻力与叶内外水势和光强关系的研究

杨文斌杨茂仁

内蒙古林业科学研究院

收稿日期:1989-10-25 修回日期:1900-01-01 出版日期:1991-09-25 发布日期:1991-09-25

STUDIES ON RELATIONS OF TRANSPIRATION RATE AND STOMATAL RESISTANCE WITH LEAF-AIR WATER POTENTIAI AND LIGHT INTENSITY

Yang Wengbin,Yang Maoren

Inner Mongolia Academy of Forestry

Received:1989-10-25 Revised:1900-01-01 Online:1991-09-25 Published:1991-09-25

摘要/Abstract

关键词: 蒸腾速率, 蒸腾阻力, 叶内外水势, 光照强度

Abstract: Transpiration rate (Tr), stomatal resistence (Dr), leaf water patential (Lp) and its corresponding environmental factors of seven tree species have been measured with LI-1600 steady state prometer and pressure chamber. When the soil water potential in 2m depth is-0.04—-0.20MPa, the light intensity is the main factor to influence Tr, which is mainly influened by Dr. The relationship between Li and Dr can be expressed by following formula: Dr=ae^b/Li, thus light intensity according to its influence on Tr can be divided into three regions: Weak light region, Tr=K/Dr, Transition region, Tr=K·ψ_(L-A)/Dr; light saturation region, Tr=a·ψ_(L-A)+b where a, b and K are coefficients, ψ_(L-A) is the difference of leaf-air water potential.

Key words: Transpiration rate, Stomatal resistance, Difference of leaf-air water potential, Light intensity

杨文斌杨茂仁. 蒸腾速率、阻力与叶内外水势和光强关系的研究[J]. , 1991, 27(5): 545-549.

Yang Wengbin;Yang Maoren. STUDIES ON RELATIONS OF TRANSPIRATION RATE AND STOMATAL RESISTANCE WITH LEAF-AIR WATER POTENTIAI AND LIGHT INTENSITY[J]. , 1991, 27(5): 545-549.

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