摘要
研究了白桦(Betulaplatyphylla)不同方向功能叶片(东向和南向)以净光合速率(Pn)为主要特征的光合作用日进程响应及净光合速率对环境因子的强度响应。结果表明,白桦的净光合速率与光合有效辐射(PAR)极显著相关(P<0.01),与气温(Ta)显著相关(P<0.05),而与大气相对湿度(RH)不相关。并首次提出了植物功能叶片“微环境”的概念。
For birch(Betula platyphylla), the diurnal course of net photosynthetic rate (Pn)was studied as well as the relatioship between Pn and environmental factors. The results show that there was considerably significant difference between Pn and PAR(photo active radiation)(P<0.01)while there was significant difference between Pn and Ta (air temperature)(P<0.05), but Pn of birch is not correlated with RH(relative humidity). The concept of microenviroment for plant functional leaves was put forward for the first time.
出处
《沈阳农业大学学报》
CAS
CSCD
2004年第3期220-222,共3页
Journal of Shenyang Agricultural University
基金
教育部跨世纪优秀人才计划基金项目子课题
关键词
白桦
微环境因子
光合响应
东向叶片
南向叶片
birch
eastern leaves
southern leaves
net photosynthetic rate
microenvironmental factors
