文献类型：期刊文献

中文题名：云南松及林下主要灌木叶功能性状对林分退化的响应

英文题名：Response of leaf functional traits of Pinus yunnanensis and main understory shrubs to stand degradation

作者：师睿[1,2] 李玮[1] 彭长青[3] 冯德枫[4,5,6]

第一作者：师睿

机构：[1]云南大学生态与环境学院云南省高原山地生态与退化环境修复重点实验室,云南昆明650091;[2]云南大学国际河流与生态安全研究院,云南昆明650091;[3]楚雄市林业局白依河林场,云南楚雄675000;[4]中国林业科学研究院高原林业研究所,云南昆明650233;[5]云南元谋干热河谷生态系统国家定位观测研究站,云南元谋干热河谷荒漠综合治理国家长期研究基地,云南昆明650233;[6]林业资源高效生产全国重点实验室,北京100091

年份：2024

卷号：46

期号：2

起止页码：355-365

中文期刊名：云南大学学报（自然科学版）

外文期刊名：Journal of Yunnan University(Natural Sciences Edition)

收录：CSTPCD;;北大核心:【北大核心2023】；CSCD:【CSCD_E2023_2024】；

基金：国家自然科学基金(32101594)。

语种：中文

中文关键词：云南松;林分退化;林下灌木;叶片功能性状

外文关键词：Pinus yunnanensis;forest stand degradation;understory shrubs;leaf functional traits

分类号：Q945.79

摘要：研究不同云南松林分下灌木叶片功能性状差异,探讨林下灌木对林分退化的适应策略,可以为滇中地区云南松林的林下植被更新和恢复提供科学依据.以云南松及3种林下常见灌木为研究对象,分析了6个叶片性状在退化林分与对照林分间的差异,揭示林下植物适应林分生境变化的生态策略.结果表明,叶面积(LA)、叶厚度(LT)、比叶面积(SLA)、叶干物质含量(LDMC)、叶密度(LD)、叶干重(LW)在不同物种间均具有显著差异(P<0.05).除LA、LD外,其他性状指标均在不同林分间存在显著差异(P<0.05),这表明物种类型、退化阶段及其交互作用显著影响云南松林分的叶片功能性状.随着林分退化,云南松针叶具有较小的LT和较大的LD,矮杨梅叶片具有较大的LT、LW、LDMC、LD以及较小的SLA值,油茶叶片具有较大的LT和LW及较小的LA和SLA值,而豆梨则具有较大的LT和LDMC以及较小的LA和LW等功能特征来适应环境.研究阐述了云南松林分退化过程中林下植物叶片功能性状适应策略,能为云南松林生态恢复过程中潜在乡土物种筛选提供一定的科学依据和基础.
In order to investigate variations in leaf functional traits among understory shrubs within different Pinus yunnanensis forests and to gain insights into how these shrubs adapt to stand degradation,we aim to establish a scientific foundation for the regeneration and restoration of central Yunnan's Pinus yunnanensis forests.We conducted a study involving Pinus yunnanensis and three common understory shrub species.Our analysis focused on six leaf traits in order to elucidate the ecological strategies employed by understory plants in response to changing habitat conditions within degraded stands.Our findings can be summarized as follows.Significant differences were observed in leaf area(LA),leaf thickness(LT),specific leaf area(SLA),leaf dry matter content(LDMC),leaf density(LD),and leaf dry weight(LW)among different plant species(P<0.05).Apart from LA and LD,significant differences were also detected in the other leaf traits between degraded and control stands(P<0.05).This suggests that both plant species and the stage of degradation,as well as their interaction,have a substantial impact on the leaf functional traits of Pinus yunnanensis stands.Plants exhibited various functional trait adjustments in response to environmental changes within degraded stands.Specifically,Pinus yunnanensis displayed a decrease in LT and an increase in LD in its needles,Myrica rubra exhibited increases in LT,LW,LDMC,LD,and a decrease in SLA,Camellia oleifera showed an increase in LT and LW,along with a decrease in LA and SLA,while Pyrus calleryana displayed an increase in LT and LDMC,along with a decrease in LA and LW.These observations provide a comprehensive understanding of the adaptation strategies employed by understory plants in the face of stand degradation in Pinus yunnanensis forests.This knowledge serves as a crucial foundation for selecting potential native species during the ecological restoration process of Pinus yunnanensis forests.