吉兰泰地区退化梭梭光合生态生理学特性

Study on the Photosynthetic Eco-physiological Characteristics of Degenerated Haloxylon Ammodendron in Jilantai

研究吉兰泰地区退化梭梭光合生态生理。结果表明 ,退化梭梭的光合能力、光合水分利用率、光饱和点均小于对照梭梭 (生长正常 ) ;与后者比较 ,退化梭梭对相对湿度的变化表现敏感 ,而对 CO2 浓度变化的反应不十分敏感 ,且抵御高温胁迫的能力较差。通径分析结果表明 。

WT5BZ]On the basis of studying on photosynthetic eco physiological characteristics of Haloxylon ammodendron, the paper points out:the photosynthetic capacity、photosynthetic water utilization ration、light compensation point of degenerated H.ammodendron are all smaller than the control.Degenerated H.ammodendron is sensitive to humidity changes but not to CO 2 concentration changes and the ability to resist high temperature is lower.The result of path coefficient analysis is that the factor affect net photosynthetic rate of H.ammodendron mostly is soil salt contents. [WT5HZ]