文献类型：期刊文献

中文题名：Modelling the response of larch growth to age,density,and elevation and the implications for multifunctional management in northwest China

作者：Ao Tian[1,2] Yanhui Wang[2] Ashley A.Webb[3] Pengtao Yu[2] Xiao Wang[2] Zebin Liu[2]

第一作者：Ao Tian

机构：[1]Institute of Mountain Resource of Guizhou Province,Guiyang 550001,People’s Republic of China;[2]Ecology and Nature Conservation Institute,Key Laboratory of Forest Ecology and Environment of National Forestry and Grassland Administration,Chinese Academy of Forestry,Beijing 100091,People’s Republic of China;[3]WaterNSW,Tamworth,NSW,Australia

年份：2023

卷号：34

期号：5

起止页码：1423-1436

中文期刊名：林业研究:英文版

外文期刊名：Journal of Forestry Research

收录：CSTPCD;;Scopus;CSCD:【CSCD2023_2024】；PubMed;

基金：funded by the National Natural Science Foundation of China (U20A2085,U21A2005,41971038);the Central Public-Interest Scientifi c Institution Basal Research Fund of Chinese Academy of Forestry (CAFYBB2021ZW002,CAFYBB2020QB004)。

语种：英文

中文关键词：Larch plantations;Coupled growth model;Influencing factors;Age;Density;Elevation

分类号：S71

摘要：Plantations of Rupprecht's larch(Larix principis-rupprechtii)have been widely established in the drylands of northwest and north China under traditional fastgrowing plantation management strategies.These strategies and the long-term logging ban have led to over-populated stands with lower structural and functional stability,less economic benefit and higher water consumption.To guide the sustainable management of larch plantations,field surveys and historical data compilation were undertaken in the Liupan Mountains of northwest China.The main influencing factors(stand structure and site condition)and their effects on mean tree height,mean DBH and timber volumes were determined based on up-boundary line analysis.Tree growth models coupling the effects of tree age,stand density,and elevation were established.Both height and DBH markedly increased initially and then slowly with tree age,decreased with stand density,and showed unimodal change with elevation.The coupled growth models accounted for72-78%of the variations in tree height,DBH and timber growth.Recommendations for future plantation management are:(1)prolong the rotation to at least 60 years to produce large-diameter,high-quality timber and maintain greater carbon stocks;(2)zone the target functions of stands by elevation;and,(3)reduce stand density for balanced supply of multiple ecosystem services.The growth models developed can predict growth response of larch plantations to density alteration under given ages and elevations,and assist the transformation from traditional management for maximum timber production to site-specific and multifunctional management with longer rotations and moderate tree density.