Biomass and growth analysis of seedlings among populations of Pinus yunnanensis
The superior population of four-year-old Pinus yunnanensis was selected by the determination of biomass and growth characteristics at seedling stage.The results indicated that all characteristics studied presented extremely significant difference among populations of P.yunnanensis except the main root length (P ＜ 0.01).All organs ' biomasses,aboveground biomass and total biomass studied presented extremely significantly differece.The order of the total biomasses,aboveground biomass and underground biomass (root biomass) was population BS ＞ GS ＞ KM ＞ LJ ＞ YL ＞ YX ＞ ZD,and the order of the biomass distribution in different organs was stem ＞ needle ＞ root ＞ branch among populations of P.yunnanensis.The moisture content of root, stem, needle presented extremely significant difference and the moisture content of branch presented significant difference among populations of P.yunnanensis (P ＜ 0.05).Only photosynthetic and non-photosynthetic organs ratio presented extremely significant difference of the seedling biomass characteristics, and branch-stem ratio presented significant difference.Comprehensive comparison showed that Baoshan population and Gaoligong Mountain population exhibited higher seedling quality, they presented the strong ability to adaptable to the environment, and exhibited the great potential in carbon storage and carbon sequestration.
国家科技期刊平台
NSTL
万方数据
维普
