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对多代杉木萌芽林皆伐后重造细柄阿丁枫 (杉阔轮栽 )和保留杉木多代萌芽林处理的生物量及营养元素分布进行了研究。结果表明 ,2 6年生细柄阿丁枫人工林平均木生物量、枝叶生物量及其所占比例 ,根系所占比例及根系组成中中根和细根生物量均高于 33年生杉木萌芽林 ;林分总生物量 ,乔木层和生态系统营养元素总量及其枝叶和根系氮、磷、钾元素贮量亦比杉木林的高 ,说明细柄阿丁枫是杉木低产林分改造比较适宜的替换树种之一。表 4参 1 2
The biomass and nutrient elements distribution of multi-generation Chinese fir sprouting forest after reconstitution were studied. The results showed that the average wood biomass, the proportion of branch and leaf biomass, the proportion of root system and the middle and small root biomass of roots in 26-year-old Altingia gracilipes plantation were higher than those of the 33-year-old Chinese fir plantation. The total stand biomass, the total amount of arborous layer and ecosystem nutrient elements, and the nitrogen, phosphorus and potassium contents of branches and roots were also higher than that of Chinese fir plantation, which indicated that the thinner Altingia fir was suitable for low-yielding Chinese fir plantation. Replace one of the tree species. Table 4 Senate 1 2