Effects of soil moisture and light intensity on ecophysiological characteristics of Amorpha fruticosa seedlings

编号 zgly0000818196

文献类型 期刊论文

文献题名 Effects of soil moisture and light intensity on ecophysiological characteristics of Amorpha fruticosa seedlings

作者 ZHANG  Xiu-ru  TAN  Xiang-feng  WANG  Ren-qing  XU  Nan-nan  GUO  Wei-hua 

作者单位 Institute  of  Ecology  and  Biodiversity  Clinical  College  of  Tianjin  Medical  University 

母体文献 林业研究: 英文版 

年卷期 2013(2)

页码 293-300

年份 2013 

分类号 S 

关键词 Amorpha  fruticosa  ecophysiological  characteristics  light  intensity  seedling  soil  moisture 

文摘内容 We investigated the combined effects of soil moisture and light intensity on the growth, development and ecophysiological characteristics of one-year old Amorpha fruticosa seedlings. Soil moisture and light intensity influenced the ecophysiological characteristics of Amorpha fruticosa seedlings. Soil moisture resulted in the decreases of growth rate, individual size, net photosynthetic rate, transpiration rate, leaf water loss rate (WLR), and biomass accumulation of plant parts, and led to increased leaf water saturation deficit (WSD). Under water stress, more photosynthetic products were allocated to root growth. With decreasing light intensity, net photosynthetic rate, transpiration rate, chla/b, water saturation deficit, water use efficiency, water loss rate and biomass accumulation declined, while Chla, Chlb, Chla+b and carotenoids (Car) increased and more photosynthetic products were allocated to stem and leaf growth. Maximum growth vigor, net photosynthetic rate and total biomass accumulation in Amorpha fruticosa seedlings was recorded at 75 80% soil water-holding capacity and 100% light density in greenhouse environments.