滨海沙地3种防护林树种不同季节叶绿素荧光参数日动态及季相变化  

Diurnal and Seasonal Changes of Chlorophyll Fluorescence Parameters of Three Shelterbelts in Sandy Coastal Plain Areas

作　　者：葛露露[1] 孟庆权 林宇 何宗明[1] 胡欢甜 邱岭军 GE Lu-lu;MENG Qing-quan;LIN Yu;HE Zong-ming;HU Huan-tian;QIU Ling-jun(College of Forestry,Fujian Agriculture and Forestry University,Fuzhou,Fujian 350002,China;Changle Dahe State-owned Protection Forest Farm of Fujian Province,Changle,Fujian 350212,China)

机构地区：[1]福建农林大学林学院,福建福州350002 [2]福建省长乐大鹤国有防护林场,福建长乐350212

出　　处：《西北林学院学报》2018年第5期58-65,共8页Journal of Northwest Forestry University

基　　金：国家自然科学基金(31570604;41371269);福建省林业科技项目(闽林科[2014]2号);福建农林大学部级创新平台资助项目

摘　　要：为评估滨海沙地木麻黄、湿地松和尾巨桉对滨海沙地气候环境的适应性,对这3种防护林树种不同季节叶绿素荧光参数日动态及季相变化进行研究。结果表明,一天中,木麻黄的初始荧光(F_o)最低,湿地松的PSⅡ最大光能转换效率(F_v/F_m)和潜在活性(F_v/F_o)均最低,且都不受季节影响。一年四季中,3种防护林树种的最大荧光(F_m)均表现为尾巨桉>湿地松>木麻黄,且季相变化均呈单峰变化规律,木麻黄的F_o、F_m均最小,尾巨桉的F_m、F_v均最大,湿地松的F_v/F_m、F_v/F_o均最小,表明湿地松开放的PSⅡ反应中心的光量捕捉效率低于木麻黄和尾巨桉。结合林分生长情况可知湿地松受环境胁迫,对滨海沙地环境的适应能力较木麻黄和尾巨桉差。In order to evaluate the adaptability of Casuarina equisetifolia,Pinus elliottii and Eucalyptus urophylla×E.grandis to the climate of coastal sand environment,we investigated the diurnal and seasonal changes of chlorophyll fluorescence parameters of three shelterbelt construction species.The results showed that,in one day,the initial fluorescence(F o)of C.equisetifolia was the lowest,the maximum energy conversion efficiency(F v/F m)and potential activity(F v/F o)of PSⅡof P.elliottii were the lowest,and they were not affected by the season.In the four seasons of a year,the values of the maximum fluorescence(F m)of the three species were all characterized by E.urophylla×E.grandis>P.elliottii>C.equisetifolia,and the seasonal changes showed a unimodal variation.The F o and F m of C.equisetifolia were the lowest,and the F m and F v of E.urophylla×E.grandis were the highest,and the F v/F m and F v/F o of P.elliottii were the lowest.It was indicated that P.elliottii s energy capture efficiency of opening PSⅡreaction center was lower than that in C.equisetifolia and E.urophylla×E.grandis.It was known that P.elliottii was subjected to environmental stress according to the growth of stand,and its adaptability to the coastal sandy environment was less than those of C.equisetifolia and E.urophylla×E.grandis.

关 键 词：叶绿素荧光参数 日动态 季相变化 滨海沙地 防护林树种 

分 类 号：S727.21[农业科学—林木遗传育种]