亚热带人工林松树13C/12C比率和水分利用效率

The ¹³C/¹²Cratio, photosynthetic rate and stomatie conductivity of leaves of Pinus massoniana, Schima superba,Psychotria rubra, Evodia lepta and Rhodomyrtus tomentasa are measured. No significant deviation (at 5% level) is observed between water use efficiencies calculated by these items. The¹³C/¹²Cis 25.41±0.61‰. In average for treerings of Pinus massoniana from 1971 to 1983(n=6), with the maximum in1977 when the lowest precipitation was recorded. The average water use efficiency of Pinus massoniana is 8.28±0.38 in1977—1983, which is higher than that of trees in natural site and might be caused by the changes of solar radiation and water condition. ¹³C/¹²Cratio ana lysis could provide usefull informations for studying water use efficiency of artificial forest.     

阿勒林格等教授来华南举办植物生理生态讲习班

华南植物研究所与美国犹他大学生物系阿勒林格教授等合作研究鼎胡山亚热带常绿森林植物的光合作用和蒸腾作用,为期两年。今年6月25—28日,美方三位教授——犹他大学的Ehleringer、Field,加州戴维斯分校的Pearcy以及西德 Bayreuth大学的 Schulze应邀到     

活性氧对苋菜磷酸烯醇式丙酮酸羧化酶活性的影响

用活性氧H