Low net primary productivity of dominant tree species in a karst forest,southwestern China:First evidences from tree ring width and girth increment

摘要：

　　Aboveground net primary productivity of two dominant species,one deciduous tree(Platycarya strobilacea)and one evergreen tree(Machilus cavaleriei),in a karst evergreen and deciduous broadleaved mixed forest in central Guizhou Province,southwestern China,was estimated in the first time based on the tree-ring width and the girth increment as well as allometric functions.Results showed that the ANPP increased from 1961 to 2015,especially during the last 20-30 years,but with strong variations.The deciduous tree had higher net primary productivity than the evergreen tree according to two kinds of estimates by the tree ring and the girth increment.The averaged net primary productivity for these two mature trees was 2.27 kg per individual per year,ca.8 t/ha/yr considering the normal stand density.Such karst forest productivity was lower than the natural subtropicl forests in China and in the world.

关键词： Biomass increment tree ring girth measurement karst evergreen and deciduous broadleaved forest allometric functions

作者: Jian Ni Haiyang Xu Libin Liu

作者单位: College of Chemistry and Life Sciences,Zhejiang Normal University,Yingbin Avenue 688,321004 Jinhua,C State Key Laboratory of Environmental Geochemistry,Institute of Geochemistry,Chinese Academy of Scie

会议类型: 国际会议

会议名称: The 11th International Symposium on Geochemistry of the Earths Surface(GES-11)(第十一届地球表层地球化学国际研讨会)

会议地点: 贵阳

会议语种:英文

页码: 1-4

在线出版日期: 2017-06-11（万方平台首次上网日期，不代表论文的发表时间）