论文部分内容阅读
对福建永春牛姆林自然保护区内22a生的闽粤栲(Castanopsis fissa)、丝栗栲(Castanopsis fargesii)、拉氏栲(Castanopsis lamonteii)不同器官的灰分含量、去灰分热值和碳含量进行对比分析,并估算各树种人工林的碳储量和能量现存量。结果表明:3种栲属树种各器官灰分含量总体表现为叶>根>枝>干,各器官平均灰分含量则表现为拉氏栲>丝栗栲>闽粤栲;各树种各器官去灰分热值总体表现为叶>枝>干>根,各器官平均去灰分热值则表现为拉氏栲>闽粤栲>丝栗栲;各树种各器官碳含量均表现为干>枝>根>叶,各器官平均碳含量则表现为闽粤栲>丝栗栲>拉氏栲;各树种各器官间的灰分含量、去灰分热值和碳含量总体差异均达到显著水平(t检验,P<0.01);除了碳含量与去灰分热值呈极显著正相关外,其他各指标间无显著相关性;3种栲属树种人工林碳储量和能量现存量表现为为闽粤栲>丝栗栲>拉氏栲,在低产低效林分改造中可优先考虑闽粤栲。
The ash content, caloric value and carbon content of Castanopsis fissa, Castanopsis fargesii and Castanopsis lamonteii in different organs of Nanaimulin Nature Reserve in Yongchun, Yongchun, Fujian were studied. Comparative analysis and estimation of carbon stock and energy stock of each plantation. The results showed that the ash content of organs of three species of Brachiaria species was leaf> root> branch> dry, and the average ash content of each organ was Labschella anguilla> Castanopsis fargesii> The average value of ash-to-calorific value of all organs showed as follows: La 栲> Fujian 栲> Cus pilosula. The carbon content of each organ in all species showed dry> shoot> root> leaf , And the average carbon content of all organs showed as follows: Min Yue> Castanopsis fargesii> Larva sanguisorcae; The ash content, ash removal calorific value and carbon content in different organs of all species reached a significant level (t <0.01) ). There was no significant correlation between carbon content and ash removal calorific value, but there was no significant correlation between other indexes. The carbon stocks and energy stocks of the plantations of three species of 栲 species were as follows: 闽 粤 栲> 栗 栲> Laoshi 栲, in low-yielding low-efficiency forest transformation can give priority to Fujian and Guangdong 栲.