杉木+黄山木兰混交林生物量分配格局

Biomass and Distribution Rate of Cunninghamia lanceolata (Lamb.)Hook

摘要:

摘要：在调查杉木+黄山木兰混交林及杉木纯林（对照）生长量的基础上，进一步分析了杉木+黄山木兰混交林及杉木纯林地上部分各器官及各径级根生物量分配格局。研究结果表明：杉木+黄山木兰混交林中杉木的生长及林分总生物量的积累均优于杉木纯林。从生物量分配上看，杉木+黄山木兰混交林中杉木及纯林中杉木其地上部分各器官的分配均表现为树干＞叶＞枝，但混交林中杉木叶和干分配率略大于纯林，而枝分配率略低于纯林；混交林中杉木粗根、大根及中根生物量均大于杉木纯林，小根及细根生物量则小于杉木纯林。

Abstract:

Abstract:Based on the investigation of growth of Cunninghamia lanceolata (Lamb.)Hook and Magnolia cylindrical Wils mixed forest and Cunninghamia lanceolata (Lamb.)Hook pure stand（control）, the different organs biomass of above ground and root distribution rate were studied by authors . The results showed that the growth of Cunninghamia lanceolata (Lamb.)Hook and total biomass of Cunninghamia lanceolata (Lamb.)Hook and Magnolia cylindrical Wils mixed forest were better than that of Cunninghamia lanceolata (Lamb.)Hook pure stand. As far as the biomass distribution rate were concerned, different organs' biomass distribution were showed strunk＞leaf＞branch, strunk and leaf biomass distribution rate in Cunninghamia lanceolata (Lamb.)Hook and Magnolia cylindrical Wils mixed forest were higher than that of Cunninghamia lanceolata (Lamb.)Hook pure stand, and branch biomass distribution rate in Cunninghamia lanceolata(Lamb.)Hook pure stand was higher than that of Cunninghamia lanceolata (Lamb.)Hook and Magnolia cylindrical Wils mixed forest; The biomass of different diameter class of stump root, big root and middle root in Cunninghamia lanceolata(Lamb.)Hook and Magnolia cylindrical Wils mixed forest were higher than that of Cunninghamia lanceolata (Lamb.)Hook pure stand, and biomass of different diameter class of minor root and fine root in Cunninghamia lanceolata (Lamb.)Hook and Magnolia cylindrical Wils mixed forest were smaller than that of Cunninghamia lanceolata (Lamb.)Hook pure stand.