木荷地上部分生物量分布特征与生产力  

Distribution Characters of Schima superba Aboveground Biomass and Its Produdtivity

作　　者：程煜[1] 洪伟[2] 吴承祯[2] 祁新华[1] 

机构地区：[1]福建师范大学地理科学学院,福州350007 [2]福建农林大学森林生态研究所,福州350002

出　　处：《应用与环境生物学报》2009年第3期318-322,共5页Chinese Journal of Applied and Environmental Biology

基　　金：国家自然科学基金(No. 30671664);福建省自然科学基金项目(No. 2009J05055);重大项目(No. 2001F007)~~

摘　　要：对中亚热带木荷–马尾松群落中木荷种群地上部分的生物量和生产力进行了研究.在木荷地上部分的生物量中,树干生物量是群落总生物量的决定性组分,所占比重为66.06%～84.79%(干重),且随着林木径级的增大呈"中间大两头小"变化.木荷种群株数和生物量的径级分布曲线均为单峰型,且基本均呈正态分布,种群81.10%的生物量集中在11<DBH≤27cm径级,反映出木荷具有很好的速生特性.木荷种群地上部分平均现存生物量为209.59thm-2,年平均生产力为14.729thm-2a-1,符合Whittaker、Rodin等估算的地球上及亚热带半干旱半湿润地区植物生产力估测值,虽然木荷–马尾松林造林时间不长,其生产力已较为可观,并具有相当的潜力.The biomass and production of Schima superba population were studied in the mid-subtropical S. superba and Pinus massoniana plantations. Of the total aboveground biomass of S. superba, trunk was accounted for 66.06%-84,79% （dry weight）, which showed the variation of＂middle is bigger than the two ends＂ with the enlarging of diameter at breast height （DBH） and indicated trunk produced the major part of biomass in whole plant. The individual number and aboveground biomass curves with different DBH were all one peak type, and the biomass of the community with 11〈DBH≤27 cm accounted for 81.10%. the aboveground biomass ofS. superba was 209.59 t hm^-2, the annual produdtivity of the community was 14.729 thm^-2 al, and the result suited to the results of Whittaker and Rodin＇s. Although the plantation time was not very long, the produdtivity was considerably high, showing that S. superba grows fast.

关 键 词：生物量 分布特征 木荷 种群生产力 

分 类 号：S718.556[农业科学—林学]