摘要
翠竹是重要的园林绿化植物之一。研究不同光照强度处理对翠竹的影响,以期为城市绿化寻找耐荫植物提供理论基础。以1年生翠竹实生苗为研究对象,通过人为控制光照强度,光照处理的照度比分别为1.29%、5.16%、11.62%、20.66%、32.68%和100%,进行12次调查时间的研究,运用广义可加模型分析了不同光照处理对翠竹的生物量分配的影响。结果表明不同光照强度和光照时间对翠竹的干质量积累影响差异显著。随着光照强度的增加,翠竹各构件干质量积累增加。翠竹各构件的干质量生物量在第9次调查时间达到最大。翠竹的叶片干质量与地上部分干质量和地下部分干质量三者之间线性相关。翠竹各构件之间的干质量线性相关,光照强度促进了各构件的干质量积累,在十月中旬各构件干质量积累达到最大。
Pleioblastus pygmaea,as a species of dwarf bamboo,is one of the important landscaping plants.The influence of different light intensity treatments on the P.pygmaea was studied so as to provide a theoretical basis for the search of shade-tolerant plants in urban greening.The one-year-old seedings of P.pygmaea were used as study materials.The treatments of light intensities included 1.29%,5.16%,11.62%,20.66%,32.68%and 100%respectively,and 12 times of investigation were made.The Generalized Additive Model (GAM)was used to analyze the dry weight distribution of P.pygmaea under various light treatments.The effects of different light intensity and treatment time on the dry weight accumulation were significant.With the increase of light intensity,the dry weight accumulation of each bamboo modular increased,amounting to the maximum in the 9th investigation.The leaf dry weight of the P.pygmaea was linearly dependent on the dry weight of the aboveground and underground parts.In conclusion,the dry weight of every modular of the P.pygmaea was linearly correlated with each other.The increasing light intensity increased the dry weight accumulation of every modular.The dry weight accumulation of each modular reached its maximum in the middle of October.
作者
王舒悰
顾琪
陈霜霜
赵刘杰
焦月潇
王福升
WANG Shu-cong;GU Qi;CHEN Shuang-shuang;ZHAO Liu-jie;JIAO Yue-xiao;WANG Fu-sheng(Co-Innovation Center for Sustainable Forestry in Southern China,Bamboo Research Institute, Nanjing Forestry University,Nanjing 210037,Jiangsu,China)
出处
《竹子学报》
北大核心
2017年第4期14-20,共7页
Journal of Bamboo Research
关键词
光照强度
广义可加模型
生物量
Light intensity
Generalized Additive Model
Biomass
