福建青冈人工林的生物生产力研究

通过对福建青冈人工林的系统调查,进行福建青冈人工林生物生产力的研究,结果表明:福建青冈人工林胸径生长明显慢于杉木,但其树高生长高于杉木 35年生福建青冈林分平均木生物量是22年生木荚红豆人工林和35年生杉木人工林的3 9和1 8倍,虽然杉木的胸径生长快于福建青冈,但福建青冈人工林具有较高光合速率,比杉木更有利于其乔木层光合产物的积累 福建青冈平均木生物量在各器官的分配比例表现为:干>枝>根>叶>皮,不同林分乔木层生物量大小排序为:福建青冈人工林>杉木人工林>木荚红豆人工林,其中35年生福建青冈人工林林分乔木层生物量分别是35年生杉木人工林和22年生木荚红豆人工林的2 8和2 5倍 因福建青冈木材容积密度大的缘故,导致人们认为福建青冈生长比较慢,研究结果对于纠正人们对福建青冈传统认识上的误区具有重要现实意义

Study on Biomass Production of Cyclobalanopsis chungii Plantation

The biomass production of Cyclobalanopsis chungii plantation was studied by the investigation. The results indicate that DBH growth of Cyclobalanopsis chungii plantation was slower than that of Cunninghaimia lanceolata plantation and its height grow fast than that of C. lanceolata. The biomass of average tree in thirty-five years plantation of C. chungii was 3.9 and 1.8 times of these in twenty-two years plantation of Ormosia xylocarpa and thirty-five years plantation of C. lanceolata respectively. The biomass allocation of different organs of C. chungii was in the sequence of stem>branch>root>leaf>bark. The biomass of overstorey layer were in the sequence of C. chungii plantation> C. lanceolata>O. xylocarpa plantation. Therefore, C. chungii was not the slow-growing tree species as tradition ideas.