摘要
以福建长乐大鹤林场5种沿海防护人工林(纹荚相思、卷荚相思、大叶相思、湿地松、木麻黄)为研究对象,于2016年1月至2018年12月连续3年调查它们的凋落物产量及各组分(叶、枝、皮、花果、其他凋落物)月动态.结果显示:5种人工林年均凋落物产量大小排序为木麻黄(12.64 t hm^(-2) a^(-1))>湿地松(9.60 t hm^(-2) a^(-1))>纹荚相思(7.47 t hm^(-2) a^(-1))>大叶相思(7.41 t hm^(-2) a^(-1))>卷荚相思(7.09 t hm^(-2) a^(-1)),其中木麻黄显著高于其余4种人工林凋落物产量.各组分凋落物产量大小排序为凋落叶>凋落枝>其他凋落物(虫尸、杂物等碎屑)>花果凋落物>树皮凋落物.其中凋落叶均为优势组分,所占比例分别为木麻黄(83.02%)、湿地松(74.49%)、卷荚相思(76.73%)、大叶相思(74.09%)、纹荚相思(71.35%).纹荚相思和湿地松最大凋落物产量月出现在8月,卷荚相思、大叶相思和木麻黄最大产量月出现在7月,最大产量月占年凋落物产量的16.4%-25.8%.凋落物产量表现为夏季>秋季>春季>冬季,且夏季各组分凋落物产量显著高于春、秋、冬3季产量.本研究表明沿海防护林中不同人工林各组分凋落物产量以及动态变化有较大差异,结果可为滨海沙地沿海防护林树种类型的选择及有关凋落物的研究提供数据参考.(图5表2参37)
Variability in and dynamics of litterfall production were analyzed in five coastal plantations composed of different species(Acacia aulacocarpa,Acacia cincinnata,Acacia auriculiformis,Pinus elliottii,and Casuarina equisetifolia)in the Changle Dahe Forest Farm,Fujian Province,China.Litterfall production and monthly dynamics in several individual components(leaf,branch,bark,flower,fruit,and other litterfall)were investigated over a 3-year period,from January 2016 to December 2018.Results showed that average annual litterfall production in the five plantations ranged in the order C.equisetifolia(12.64 t hm^(-2) a^(-1))>P.elliottii(9.60 t hm^(-2) a^(-1))>A.aulacocarpa(7.47 t hm^(-2) a^(-1))>A.auriculiformis(7.41 t hm^(-2) a^(-1))>A.cincinnata(7.09 t hm^(-2) a^(-1)).Litterfall production in C.equisetifolia plantations was significantly higher than in the other four plantations.Among individual components,litterfall production in the five plantations consisted of leaf litter>branch litter>other litterfalls>flower and fruit litter>bark litter.Leaf litter was the dominant component in all five plantation types,accounting for 83.02%(C.equisetifolia),74.49%(P.elliottii),76.73%(A.cincinnata),74.09%(A.auriculiformis),and 71.35%(A.aulacocarpa)of total litterfall.Average litterfall production in A.aulacocarpa and P.elliottii plantations peaked in August,whereas maximum average production in A.cincinnata,A.auriculiformis,and C.equisetifolia occurred in July.Monthly litter production accounted for 16.4%-25.8%of the annual litter output.In terms of seasonal dynamics,litterfall production was highest in summer,followed by autumn,spring,and winter,and was significantly higher in summer than in the other three seasons.The results of our study demonstrate that litterfall production varies considerably among the artificial forests in coastal shelterbelts,and inform treespecies selection and future research on forest litter dynamics in shelterbelts in coastal sandy environments.
作者
李凯
石焱
赵文东
林宇
何宗明
LI Kai;SHI Yan;ZHAO Wendong;LIN Yu;HE Zongming(College of Forestry,Fujian Agriculture and Forestry University,Fuzhou 350002,China;Changle Dahe State-owned Protection Forest Farm,Fuzhou 350200,China;Institute of Management Cadres,State Forestry and Grassland Administration,Beijing 102600,China)
出处
《应用与环境生物学报》
CAS
CSCD
北大核心
2022年第2期317-324,共8页
Chinese Journal of Applied and Environmental Biology
基金
国家自然科学基金项目(31800532)资助。
关键词
沿海防护林
人工林
凋落物产量
月动态
年际动态
coastal shelterbelt
plantation
litter production
monthly dynamics
interannual dynamics
