摘要
对福建省尤溪县4年生杉木、樟树人工混交林地上部分和地下部分生物量及其分配进行了调查。结果表明,从混交林生长指标来看,不同坡位杉木及樟树平均胸径、平均树高及单位面积平均材积均体现为下坡位生长量>中坡位生长量>上坡位生长量;从生物量来看,下坡位杉木、樟树平均木单株总生物量最高,其次为中坡位,上坡位杉木、樟树林分总生物量最低;从各器官生物量分配率上看,不同坡位杉木各器官生物量分配率均表现为干部>叶部>枝部,樟树各器官生物量均表现为干部>枝部>叶部。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,樟树不同坡位均表现为骨骼根>大根>中根>细根>小根。
The biomass and its distribution rate of above-ground and underground part of 4-year-old artificial mixed forest of Chinese fir and Cinnamomum camphora in Youxi county of Fujian province were studied.The results showed that the average breast diameter,average tree height and average volume per unit area of mixed forest in different slope positions all revealed the following order: downslope> mid-slope> upslope.The average total biomass per plant of Chinese fir and Cinnamomum camphora in downslope position was the highest,followed by that in middle slope position.The distribution rate of biomass of various organs of Chinese fir in different slope positions had the sequence of trunk> leaf> branch,and that of Cinnamomum camphora had the sequence of trunk> branch > leaf.As far as the average distribution rate of biomass of tree roots with different diameters in different slope positions was concerned,Chinese fir had the sequence of stump > middle root> thick root > minor root> fine root,and Cinnamomum camphora had the sequence of stump> thick root> middle root> fine root> minor root.
出处
《江西农业学报》
CAS
2010年第8期43-45,52,共4页
Acta Agriculturae Jiangxi
