福建林学院学报2011，Vol.31Issue(1)：52-55,4.
滨海围垦地2种木本植物光合特性的研究
Studies on photosynthetic characteristics of 2 species of woody plants in coastal reclamation land
摘要
Abstract
By means of Li-6400 portable photosynthetic system, the diurnal-variation of photosynthetic characteristics of Sapium sebiferum and Ligustrum lucidum was investigated at coastal reclamation land in Nanhui District, Shanghai. The results showed that:(1) the light saturation point of 2 kinds of plants were 1 583.200,920.760 μ mol·m-2· s-1 respectively, thus they could be viewed as heliphytes; (2) the diurnal courses of the photosynthetic rates of S. sebiferum, L. lucidum were doubled-peaked, and midday photosynthetic depressions occurred in both species. The reasons of midday depression phenomenon of photosynthesis were,however, different, e. g. stomatal limitation for L. lucidum and non-stomatal limitation for S. sebiferum; (3)daily average WUE (water use efficiency) was higher in S. sebiferum (2.512) than in L.lucidum ( 1.591 ). Thus the accumulation of organic matter was higher in S. sebiferum than in L. lucidum. The former grew better than the latter. Pn (net photosynthetic rate) was mainly affected by PAR ( photosynthetically active radiation) and RH ( relative humidity) among the environmental factors.关键词
光合特性/光饱和点/净光合速率/水分利用效率Key words
photosynthetic characteristics/ light saturation point/ net photosynthetic rate/ water use efficiency分类
林学引用本文复制引用
张翠,吴统贵,方炎明,王臣,成向荣,虞木奎..滨海围垦地2种木本植物光合特性的研究[J].福建林学院学报,2011,31(1):52-55,4.基金项目
国家科技支撑计划"沿海陆地防台风防护林体系研究与示范"资助项目9BADB2B0301). （）
