生态学报2017，Vol.37Issue(1)：25-34,10.DOI:10.5846/stxb201607261529
土壤增温调节中亚热带森林更新初期植物生物量分配格局
Effects of experimental soil warming on plant biomass allocation during the early stages of succession in a subtropical forest in China
摘要
Abstract
Climate warming is known to increase the plant productivity of temperate forest ecosystems,but it is unclear whether this occurs in subtropical forests.Improved understanding of plant growth in subtropical forests is important when studying climate warming because considerable amounts of carbon are sequestered by these ecosystems.In this study,a heat cable was used to assess the effects of warming (+5℃) on the growth and biomass allocation of herbaceous and woody plants in a mid-subtropical forest.The results showed that warming increased the height of Miscanthus floridulus (herbaceous plant),Trema dielsiana (woody plant) and Mallotus lianus (woody plant),but deceased the height of Gahnia tristis (herbaceous plant).Aboveground biomass,belowground biomass and total biomass of woody plants increased in response to warming but there was reduced the aboveground biomass,belowground biomass and total biomass of herbaceous.The branches mass ratio (BMR) for woody plants increased,but the stem mass ratio (SMR) decreased in response to warming.However,the leaf mass ratio (LMR) and the root mass ratio (RMR) showed no direct response to warming,while there was a significant reduction in the proportion of fine-root biomass to total root biomass.The community as a whole was resistant to short-term warming and showed no significant changes the patterns of biomass allocation.However,the woody plant biomass allocation patterns between organs did change with warming.This suggests that woody plants could adapt to climate warming in the future by adjusting their biomass allocation pattern.关键词
亚热带/土壤增温/草本植物/木本植物/生物量/分配格局Key words
subtropical/soil warming/herbaceous/woody/biomass/allocation引用本文复制引用
李晓杰,刘小飞,林成芳,陈仕东,熊德成,林伟盛,胥超,谢锦升,杨玉盛..土壤增温调节中亚热带森林更新初期植物生物量分配格局[J].生态学报,2017,37(1):25-34,10.基金项目
国家重大科学研究计划课题资助项目(2014CB954003) （2014CB954003）
国家自然科学基金资助项目(31500407,31500408) （31500407,31500408）
