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黄土半干旱区侧柏蒸腾作用及其与环境因子的关系
引用本文:田晶会,贺康宁,王百田,张卫强,尹婧.黄土半干旱区侧柏蒸腾作用及其与环境因子的关系[J].北京林业大学学报,2005,27(3):53-56.
作者姓名:田晶会  贺康宁  王百田  张卫强  尹婧
作者单位:1.1 中国科学院沈阳应用生态研究所大青沟沙地生态实验站 2 中国科学院研究生院
基金项目:国家自然科学基金 , 教育部科学技术研究项目
摘    要:利用Li-1600稳态气孔仪,对黄土半干旱区山西省方山县试验地侧柏的蒸腾作用及其环境因子进行测定.该研究的目的是为分析该地区侧柏蒸腾作用对环境因子的响应和侧柏最适的水分生态条件提供理论依据.结果表明:蒸腾速率日变化曲线呈双峰型,蒸腾速率与土壤含水量的关系呈三次曲线相关,蒸腾速率与气孔阻力的关系呈幂函数相关.蒸腾作用受环境因子综合作用的影响,其中气温对蒸腾作用的影响较大. 

关 键 词:侧柏    蒸腾作用    环境因子
文章编号:1000-1522(2005)03-0053-04
收稿时间:1900-01-01

Relationship between transpiration of Platycladus orientalis and environmental factors in semi_arid region on Loess Plateau.
TIAN Jing-hui,HE Kang-ning,WANG Bai-tian,ZHANG Wei-qiang,YIN Jing.Relationship between transpiration of Platycladus orientalis and environmental factors in semi_arid region on Loess Plateau.[J].Journal of Beijing Forestry University,2005,27(3):53-56.
Authors:TIAN Jing-hui  HE Kang-ning  WANG Bai-tian  ZHANG Wei-qiang  YIN Jing
Institution:College of Soil and Water Conservation, Beijing Forestry University,100083,P.R.China.
Abstract:The transpiration rate,stomatal resistance and environmental factors of Platycladus orientalis in the test field of Fangshan Country of Shanxi Province in the semi_arid region of the Loess Plateau were measured with a portable steady porometer(Li 1600).The study provides theoretical basis in analyzing the transpiration response on the environmental factors and the optimum water ecological condition of Platycladus orientalis in semi_arid region.The results show that the diurnal course of transpiration rate displays a double_peak pattern.The transpiration rate presents a cubic relation with water content in soil and an exponential relation with stomatal resistance.The transpiration rate correlates significantly with the main environmental factors such as air temperature,relative humidity and photosynthetic active radiation.The air temperature is the main factor which affects transpiration.
Keywords:Platycladus orientalis  transpiration  environmental factor
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