乐昌含笑造林试验及效果分析

对福建省邵武市桂林乡乐昌含笑人工林进行调查,结果表明:8年生乐昌含笑与杉木1∶1混交林的乐昌含笑和杉木胸径、树高年均生长量、单株材积及总蓄积量均大于各自纯林。不同坡位9年生乐昌含笑人工纯林的胸径、树高及蓄积生长量均以下坡林分为最高,表现为:下坡>中坡>上坡。8年生乐昌含笑和杉木人工纯林的平均木生物量分别为31.55 kg和33.74kg;乔木层生物量分别为41.73 t.hm-2和45.55 t.hm-2;地上部分生物量的比例分别为94.28%和96.85%,灌木层和草本层所占比例较少;乐昌含笑和杉木平均木生物量各器官的比例分别表现为:干>根>枝>叶>皮、干>根>叶>枝>皮。

Michelia chapensis Afforestation Experiment and Effect Analysis

Michelia chapensis plantation in Guilin Township,Shaowu,Fujian was surveyed,the results showed that: dbh,tree height average annual growth amount,single-tree volume and total stocking of 8 years old Michelia chapensis and Cunninghamia lanceolata of their mixed forest(1∶ 1) were greater than their pure forest.The dbh and tree height and stocking growth amount of 9 years old Michelia chapensis plantation on lower slope were highest,it showed as follows: lower slope>middle slope>upper slope.The average wood biomass of 8 years old Michelia chapensis and Cunninghamia lanceolata plantation,were 31.55 kg and 33.74 kg;tree layer biomass were 41.73 t·hm-2 and 45.55 t·hm-2;the biomass ratio of above-ground part were 94.28% and 96.85%,the proportions of shrub layer and herb layer were small;average biomass of different organs of Michelia chapensis and Cunninghamia lanceolata were as follows:trunk>root>branch>leaf>bark and trunk>root>leaf>branch>paper.