不同坡位5年生杉木木荷混交林生物量及其分配

分析了不同坡位5年生杉木木荷混交林杉木木荷混交林生长量、地上及地下部分生物量及其分配率。研究结果表明，从杉木木荷混交林的胸径生长、树高生长、鲜生物量、干生物量以及各器官生物量来看，均表现为下坡位生长量〉中坡位生长量〉上坡位生长量。从平均木地上部分各器官生物量分配率来看，杉木不同坡位均表现为树干〉叶〉枝，木荷不同坡位均表现为树干〉枝〉叶。从平均木各径级根生物量分配率来看，杉木不同坡位均表现为骨骼根〉中根〉大根〉小根〉细根，木荷不同坡位均表现为骨骼根〉中根〉小根〉细根〉大根。

Biomass of Five-year Mixed Forest of Chinese Fir and Schima superba and Its Distribution at Different Slope Position

The growth increment, I biomass of overground parts＇and underground parts and its distribution rate of 5-year mixed forest of Chinese fir and Schima superba at different slope position were analyzed. The results indicated that the growth of diameter at breast height, tree height growth,fresh biomass,dry biomass and biomass of various organs of the mixed forest of Chinese fir and Schima superba showed the trend of downslope growth increment 〉 midslope growth increment 〉 upslope growth increment. According to the distribution rate of various organs of biomass of the overground parts of average tree, Chinese fir at different slope position had the sequence of trunk 〉 leaf 〉 branch and Schima superba at different slope position had the sequence of trunk 〉 branch 〉 leaf. As far as the distribution rate of the biomass of various roots of average tree at different diameter class were concerned, Chinese fir had the sequence of stump root 〉 middle root 〉 large root 〉 rootlet 〉 fine root and Schima superba had the sequence of stump root 〉 middle root 〉 rootlet 〉 fine root 〉 large root at different slope positions.