林业科学Issue(9)：173-179,7.DOI:10.11707/j.1001-7488.20140924
3种沙地植物光合碳同化对环境因子的生理响应
Physiological Responses of the Photosynthetic Carbon Assimilation to Environmental Factors in three Sandy Plants
摘要
Abstract
Physiological responses of the photosynthetic carbon assimilation of one-Year-old seedlings of three sandy plant species to environmental factors were studied. The results showed that ( 1 ) the variation in photosynthetic characteristics among the sandy plant species was larger in high light and high CO2 concentration than those in low light (0 -400 μmol·m -2·s -1) and CO2concentration (0 -200 μmol·mol -1). The response curves of photosynthetic rate of Atraphaxis bracteata to light intensity,CO2 concentration,temperature,and relative humidity were all located in the upper position to Morus alba and Apoceynum venetum in both July and September. ( 2 ) Photosynthetic parameters were significantly different between July and September in each species,with A. bracteata and M. alba having stronger photosynthetic capacity in July whereas A. venetum having stronger photosynthetic capacity in September. ( 3 ) A. bracteata was adapted to higher light intensity,CO2 concentrations and temperature,showing to some degree characteristics of sun plants. M. alba was sensitive to temperature and was adapted to shade environments. A. venetum had weak ability to adapt to high light and low CO2 assimilation,but had a longer duration of CO2 assimilation during growing seasons.关键词
响应曲线/光合碳同化/气象因子Key words
response curve/photosynthetic carbon assimilation,ecological factor分类
农业科技引用本文复制引用
宁虎森,罗青红,吉小敏,朱雅娟,孙慧瑛,褚玲..3种沙地植物光合碳同化对环境因子的生理响应[J].林业科学,2014,(9):173-179,7.基金项目
“十二五”农村领域国家科技计划课题(2012BAD16B0305)，(2012BAD16B0102)。 （2012BAD16B0305）
