海南岛尖峰岭鸡毛松人工林乔木层生物量和生产力研究  

Study on Biomass and Net Primary Productivity of Podocarpus imbricatus Plantation in Jianfengling,Hainan Island

作　　者：陈德祥[1] 李意德[1] 骆土寿[1] 林明献[1] 孙云霄[1] 

机构地区：[1]中国林业科学研究院热带林业研究所,广东广州510520

出　　处：《林业科学研究》2004年第5期598-604,共7页Forest Research

基　　金："国家十五攻关项目(2001BA510B0804)";国家科技部和国家林业局"全国重点野外科学观测试验站项目(2001 08)"的研究内容

摘　　要：对海南岛尖峰岭35年生鸡毛松人工林生物量的结构与分布特点、净初级生产力和林分生长的动态变化进行了研究。结果表明,鸡毛松人工林乔木层生物量达285 53t·hm-2,其中树干为190 82t·hm-2,树皮为19 19t·hm-2,树枝为35 93t·hm-2,树叶为7 96t·hm-2,根为31 63t·hm-2,鸡毛松不同器官生物量的比例为树干∶树枝∶根∶树皮∶树叶=24 0∶4 5∶4 0∶2 4∶1 0。12～22cm径级的立木生物量占总生物量的70 9%,而8m以下的树干生物量占其总生物量的80%以上。1～25a内生物量增长迅速,年平均净生产量随年龄的增加而增大,25a后生物量增长相对较慢,进入生长的平稳期。35a鸡毛松人工林乔木层年平均净生产力可达10 34t·hm-2·a-1,最大可达13 99t·hm-2·a-1,表现出较高的生产力。The Biomass,net primary productivity and dynamic changes of forest were determined and investigated on a thirty-five years old Podocarpus imbricatus plantation in Jianfengling,Hainan Island. The total biomass of tree layer of the plantation was 285.53 t·hm^(-2),of which the stem accounted for 190.82 t·hm^(-2),branches 35.93 t·hm^(-2),leaf material 7.96 t·hm^(-2) and roots 31.63 t·hm^(-2).Regarding the production structure,the biomass of trunk under the heights of 8 meters accounted for 80% of the total and which of the stumpage with the diameter class between 12 cm and 22 cm accounted for 70% of the total.The biomass of the plantation increased rapidly between 1 and 25 years and annual average net primary productivity increased with the age of the trees,but the growth slowed down after 25 years.It was a high productivity plantation with a net primary productivity averaged at 10.34 t·hm^(-2)·a^(-1) and the highest one could reach as high as 13.99 t·hm^(-2)·a^(-1).The integrate effects could be improved by regulating the present structure of the community.

关 键 词：鸡毛松 人工林 生物量 生产力 海南岛尖峰岭 

分 类 号：S718.556[农业科学—林学]