Changes in leaf stomatal traits of different aged temperate forest stands  

作　　者：Qian Li Jihua Hou Nianpeng He Li Xu Zihao Zhang 

机构地区：[1]Beijing Key Laboratory of Forest Resources and Ecosystem Processes,Beijing Forestry University,Beijing 100083,People’s Republic of China [2]Key Laboratory of Ecosystem Network Observation and Modeling,Institute of Geographic Sciences and Natural Resources Research,Chinese Academy of Sciences,Beijing 100101,People’s Republic of China [3]College of Resources and Environment,University of Chinese Academy of Sciences,Beijing,People’s Republic of China [4]Key Laboratory of Vegetation Ecology,Ministry of Education,Northeast Normal University,Changchun,People’s Republic of China

出　　处：《Journal of Forestry Research》2021年第3期927-936,共10页林业研究（英文版）

基　　金：supported by the National Natural Science Foundation of China(31,872,683,31,800,368,31,872,690);the National Key Research Project of China(2017YFC0504004,2016YFC0500202);the program of Youth Innovation Research Team Project(LENOM2016Q0005)。

摘　　要：Stomata control carbon and water vapor exchange between the leaves and the atmosphere,thus infl uencing photosynthesis and transpiration.Combinations of forest patches with different stand ages are common in nature,however,information of which stomatal traits vary among these stands and how,remains limited.Here,seven different aged forest stands(6,14,25,36,45,55,and 100 years)were selected in typical temperate,mixed broadleaf-conifer forests of northeast China.Stomatal density,size and relative area of 624 species,including the same species in stands of different ages were selected.Stomatal density,size and relative area were distributed log-normally,differing across all species and plant functional groups.Stomatal density ranged from 4.2 to 1276.7 stomata mm^(–2),stomatal size ranged from 66.6 to 8315.7μm^(2),and stomatal relative area 0.1–93.3%.There was a significant negative relationship between density and size at the species and functional group levels,while the relative stomatal area was positively correlated with density and size.Stomatal traits of dominant species were relatively stable across different stand ages but were significantly different for herbs.The results suggest that stomatal traits remain relatively stable for dominant species in natural forests and therefore,spatial variation in stomatal traits across forest patches does not need to be incorporated in future ecological models.

关 键 词：Forest restoration Stomatal traits Stand age Plant functional groups VARIATION 

分 类 号：S718.5[农业科学—林学]