Abstract
Photosynthesis and transpiration are the most important physiological activities for plants. They are closely related not only to photosynthesis active radiation (PAR), air temperature (Ta), relative humility (RH) and ambient CO<sub>2</sub> concentration, but also to plant stomatal conductance and intercellular CO<sub>2</sub> concentration. Their relationship can be analyzed through statistic methods to indicate plant eco-physiological ability bearing to environment. By means of measuring the photosynthesis of <i>Haloxylon ammodendron</i> and <i>Reaumuria soongorica</i> in the Sangonghe River valley we have dealt with similarities and differences of two species. Results show that net photosynthesis rate of <i>Reaumuria soongorica</i> is slight higher than <i>Haloxylon ammodendron</i>, but water use efficiency of <i>Haloxylon ammodendron </i>is evidently higher than <i>Reaumuria soongorica</i>. It suggests that <i>Haloxylon ammodendron</i> has strong bearing ability to drought in natural habitat.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
