北京林业大学学报2017，Vol.39Issue(1)：34-42,9.DOI:10.13332/j.1000-1522.20160063
阔叶红松林下早春植物生物量分配
Biomass allocation of eight early-spring herbs in broadleaf-Pinus koraiensis mixed forest
摘要
Abstract
To investigate whether early-spring herbs ( ESHs) have a similar life-spancy pattern, we observed seasonal dynamics and inter-specific differences of biomass for eight common ESHs in plots of broadleaf-Korean pine ( Pinus koraiensis ) mixed forests, located in the experimental forests of Jiaohe Forestry Administration, northeastern China. The measurements were conducted 4 times in a year with the full harvest method, and phenology was observed every 2 days. Linear regression models between biomass and plant height were fitted. The results showed the course of flowering and fruiting among the eight ESHs were much different, ranging from 34 to 48 days. The biomass of various organs among the eight ESHs differed significantly. In addition, total biomass varied between 0. 1 and 4 g, and plant height between 7 and 23 cm. ESHs presented a similar trend in the change of biomass and height. The root-top ratio as well as reproductive allocation ratio by the same date among the eight ESHs were significantly different, the root-top ratio as well as the reproductive allocation ratio by different dates among the same ESHs were also significantly different, with the overall reproductive allocation remained less than 13%. The proportion of the underground biomass was significantly increased throughout the growing season. We fitted five linear regression equations of total biomass to plant height for the eight ESHs. The results indicated that Eranthis stellata had the best fitting. Although the RMA of other seven ESHs was large, but it was still consistent with the modeling standards. So it is concluded that ESHs have the same life strategy in biomass allocation.关键词
早春植物/生活史对策/生物量分配/模型构建Key words
early-spring herbs/life history strategy/biomass allocation/model construction分类
农业科技引用本文复制引用
李良,夏富才,孙越,张骁..阔叶红松林下早春植物生物量分配[J].北京林业大学学报,2017,39(1):34-42,9.基金项目
“十二五”国家科技支撑计划项目(2012BAC01B03-1)。 （2012BAC01B03-1）
