水分条件对4个红松种源幼苗生长及生物量分配的影响

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中图分类号：S725.5 文献标识码：A

文章编号：1001-9499（2025）05-0001-04

Effects of Water Conditions on the Seedlings Growth and Biomass Allocation of four Pinus koraiensis Provenances

LI Boyang1 WANGPengyang1YANGJianfei1，2* SHEN Hailong1，3 （1.College ofForestry，Northeast Forestry University，Heilongjiang Harbin 15oo40;2.Key Laboratory of Sustainable Forest Ecosystem Management Ministry of Education，Heilongjiang Harbin15004O;3.Korean Pine Engineering Technology Research Center of State Forestry and Grassland Administration，Heilongjiang Harbin 150040）

AbstractThis study used four provenances ofone-year-old seedlings of Pinus koraiensis as the research subject.A randomized block design was utilized withthree water gradients-drought （W1，soil water content 13% ）， normal （W2，soil water content 26% ），and water addition （W3，soil water content 39% ）- to investigate the growth，biomassaccumulation，and allocation patterns of seedlings from different provenances under diferent water treatments.The results showed that，apart from the SS provenance，water significantly enhanced the height growth，ground diameter growth，and total biomass accumulation of Korean pine seedlingsacross different provenances.Notably，under higher soil water conditions，theLSH provenance exhibited the greatest increases in both height and ground diameter，while the LS provenance demonstrated the highest total biomass accumulation.The analysisoftheregression fitrelationship revealed that increased soil moisture significantly promoted the alocation of biomass to theaboveground parts in Korean pine seedlings.

Key wordsPinus koraiensis;water treatment; biomass; provenanci

21世纪以来温室效应导致高纬度地区平均地表温度升高 3～6°C ，加之东北地区降水量下降明显，未来东北地区可能变得更加干暖[1-2]。（剩余4108字）