广西林业科学2025，Vol.54Issue(1)：44-51,8.DOI:10.19692/j.issn.1006-1126.20250106
华北落叶松不同海拔更新苗对移栽地海拔的适应性差异
Adaptive Differences of Larix principis-rupprechtii Regenerated Seedlings from Different Elevations to Elevations of Transplant Sites
摘要
Abstract
In order to reveal adaptive rules of Larix principis-rupprechtii regenerated seedlings from different el-evations to elevations of transplant sites,and provide references for optimization of plantation adaptive afforesta-tion techniques under climate change situations,taking 4-year-old to 5-year-old L.principis-rupprechtii natu-ral regenerated seedlings from high elevation zone(2 400 m)and low elevation zone(1 600 m)in identical in-clines of Guandishan forest district as experimental materials,regenerated seedlings from different elevations were transplanted to 4 elevation zones(1 600,1 900,2 100 and 2 400 m).Leaf morphology,photosynthetic physiological characteristics,nutrient utilization and accumulation characteristics,and new branch growths of regenerated seedlings from different elevations were determined after one year of transplantation,and changes of these indexes with elevation changes of transplant sites were analyzed.Results showed that differences of most indexes of leaf morphology and photosynthetic physiology,water utilization efficiencies,contents of non-structure carbohydrate and new branch lengths between L.principis-rupprechtii regenerated seedlings from dif-ferent elevations were significant or extremely significant.Leaf lengths,leaf widths,leaf areas and new branch base diameters of seedlings from high elevation were lower than those of seedlings from low elevation.Seedlings from high elevation showed higher photosynthetic efficiencies,lower light compensation points,higher water uti-lization abilities and higher contents of soluble organic matters.These characteristics of seedlings from high ele-vation were more obvious with increase of elevation differences between origins and transplant sites in total.L.principis-rupprechtii regenerated seedlings from high elevation had certain advantages in leaf phenotype,pho-tosynthetic physiology,water and nutrient utilization,and resistance physiology,which were conducive to ad-dress climate changes.There should be potential advantages to develop mountain seedling in high elevation zones in practices.关键词
不同海拔更新苗/可塑性/海拔梯度/移栽/华北落叶松Key words
seedling from different elevations/plasticity/elevation gradient/transplantation/Larix principis-rupprechtii分类
农业科技引用本文复制引用
冯晓宇,吕世琪,张芸香..华北落叶松不同海拔更新苗对移栽地海拔的适应性差异[J].广西林业科学,2025,54(1):44-51,8.基金项目
山西省重点研发项目(2021020903007) （2021020903007）
山西省林业科技创新项目(2018LYCX32) （2018LYCX32）
