丽水白云国家森林公园5种典型林分挥发性有机化合物释放特征及其与环境因子的关系  

VOCs release characteristics of 5 typical stands in Baiyun National Forest Park and their relationship with environmental factors

作　　者：吴沁娇 宋艳冬 陶士杰 王丽[1] 周如意 陈武 潘心禾 周宇峰[1] 周国模[1] WU Qinjiao;SONG Yandong;TAO Shijie;WANG Li;ZHOU Ruyi;CHEN Wu;PAN Xinhe;ZHOU Yufeng;ZHOU Guomo(Key Laboratory of Carbon Cycling in Forest Ecosystems and Carbon Sequestration of Zhejiang Province,Zhejiang A&F University,Hangzhou 311300,Zhejiang,China;Lishui Academy of Agricultural and Forestry Sciences,Lishui 323000,Zhejiang,China;Lishui Baiyun Ecological Forest Farm,Lishui 323000,Zhejiang,China;Scientific Research Management Center of East China Pharmaceutical Botanical Garden,Lishui 323000,Zhejiang,China)

机构地区：[1]浙江农林大学浙江省森林生态系统碳循环与固碳减排重点实验室,浙江杭州311300 [2]丽水市农林科学研究院,浙江丽水323000 [3]丽水市白云山生态林场,浙江丽水323000 [4]华东药用植物园科研管理中心,浙江丽水323000

出　　处：《浙江农林大学学报》2023年第5期930-939,共10页Journal of Zhejiang A&F University

基　　金：浙江省重点研发计划项目(2021C02005);丽水市重点科技创新团队项目(2018CXTD02)。

摘　　要：【目的】研究不同林分挥发性有机化合物(VOCs)释放特征,为开展森林康养活动提供科学依据。【方法】2021年9月25—29日,采用吸附管采样离线分析和实时在线分析相结合,分析浙江丽水白云国家森林公园5种典型林分[杉木Cunninghamia lanceolata林、柳杉Cryptomeria fortunei林、阔叶混交林(青冈Cyclobalanopsis glauca和白栎Quercus fabri)、杉阔混交林(杉木和樟树Cinnamomuncamphora)、毛竹Phyllosachysedulis林]的VOCs组分与摩尔分数。【结果】①除毛竹林外,其他4种林分主要释放单萜;杉木林、柳杉林、阔叶混交林和杉阔混交林的单萜释放量分别占总VOCs的47.5%、60.0%、50.4%和39.9%。②不同林分单萜摩尔分数从大到小依次为柳杉林(3.15 nmol·mol^(-1))、阔叶混交林(1.89 nmol·mol^(-1))、杉木林(1.69 nmol·mol^(-1))、杉阔混交林(1.47 nmol·mol^(-1))、毛竹林(1.24 nmol·mol^(-1)),其中柳杉林的单萜摩尔分数显著高于其他林分(P<0.05)。③不同林分的人体呼吸层单萜摩尔分数日变化趋势不同,其中:杉木林和阔叶混交林呈逐渐下降趋势,杉阔混交林和柳杉林呈逐渐上升趋势,毛竹林呈先上升后下降趋势。④单萜摩尔分数与环境因子的相关性因林分不同而不同:柳杉林与杉阔混交林均与相对湿度、细颗粒物(PM_(2.5))、可吸入颗粒物(PM_(10))呈极显著负相关(P<0.001);杉木林和阔叶混交林单萜摩尔分数与湿度呈极显著正相关(P<0.001);毛竹林与各环境因子的相关性都没有达到显著水平。【结论】柳杉林单萜摩尔分数和占比均高于其他林分,在选择森林康养场所时优先推荐。[Objective]This study aims to explore the release characteristics of volatile organic compounds(VOCs)from different forest stands,so as to provide a scientific basis for the development of forest therapy activities.[Method]A combination of sorbent tube enrichment sampling and real-time online sampling was used to analyze VOCs composition and mole fractions of 5 typical forest stands:Cunninghamia lanceolata forest(SM),Cryptomeria fortunei forest(LS),Cyclobalanopsis glauca-Quercus fabri mixed forest(KY),C.lanceolata and Cinnamomum camphora mixed forest(SK),Phyllosachys edulis forest(MZ)in Baiyun National Forest Park in Zhejiang Province from September 25 to 29,2021.[Result](1)Monoterpenes were mainly released from the other 4 stands except for MZ.The monoterpene release from SM,LS,KY and SK accounted for 47.5%,60.0%,50.4%and 39.9%of the total VOCs,respectively.(2)The monoterpene concentrations in different stands ranging from large to small were LS(3.15 nmol·mol^(-1)),KY(1.89 nmol·mol^(-1)),SM(1.69 nmol·mol^(-1)),SK(1.47 nmol·mol^(-1)),and MZ(1.24 nmol·mol^(-1));in which the monoterpene concentration of LS was significantly higher than that of other stands(P<0.05).(3)The daily variation trend of monoterpene mole fractions in the human respiratory layer of different stands was different,among which SM and KY showed a gradual downward trend,SK and LS showed a gradual upward trend,and MZ showed first an increasing trend and then a decreasing trend.(4)The correlations between monoterpene mole fraction and environmental factors varied in different stands.LS and SK both had a significant negative correlations with relative humidity,PM_(2.5) and PM_(10)(P<0.001).There was a significant positive correlation between the monoterpene mole fraction and humidity in SM and KY(P<0.001).The correlation between MZ and various environmental factors did not reach a significant level.[Conclusion]LS have a higher mole fraction and proportion of monoterpene than other forests,and are highly recommended for forest therapy sites.

关 键 词：挥发性有机化合物 单萜 森林康养 环境因子 释放特征 

分 类 号：S718[农业科学—林学] Q946[生物学—植物学]