JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2012, Vol. 36 ›› Issue (04): 46-50.doi: 10.3969/j.jssn.1000-2006.2012.04.009

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The response of clonal growth of Hippophae rhamniodes L.subsp sinensis to the availability of soil moisture in Mu Us sand land

HE Bin1, ZHAO Fenxia1,LI Genqian1,2*, MA Xianfeng1, XU Debing3, LI Tianjiang2   

  1. 1.College of Forestry, Southwestern Forestry University, Kunming 650224, China; 2. College of Forestry, Beijing Forestry University, Beijing 100083, China; 3. Yunan Academy of Forestry, Kunming 650204, China
  • Online:2012-07-07 Published:2012-07-07

Abstract: Based on the biomass determination and track mining techniques, plasticity strategy of Hippophae rhamniodes L.subsp sinensis population at different soil moisture conditions was studied in the Mu Us sand land. The results showed: under low level of soil moisture supply, plant individuals and population were smaller, the daughter ramets density and branching intensity were smaller while spacer was longer, which caused population tend to guerrilla type; under high level of soil moisture supply, plant individuals and population were bigger, the daughter ramets density and branching intensity were bigger while spacer was shorter, which caused population tend to phalanx type. In addition, the biomass allocation of branch, leave, root and aboveground were more under low level of soil moisture supply; the biomass allocation of trunk, spacer and underground biomass were more under high level of soil moisture supply. Differences of soil moisture conditions caused the plant individuals and population differentiates and led to the differentiation in population fitness.

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