CAJ | 학술논문

本研究在广西来宾市32年生顶果木人工林内选取标准地，采用收获样方法计算林分生物量，同时对林分乔木层根、干、枝、叶、皮，灌木层根、干、枝、叶，草本层地上部分和地下部分进行生物量和营养元素含量的测定与分析，以研究其生态系统的营养元素分配特征。结果表明，32年生顶果木人工林生态系统生物量为808．25 t／hm2，各器官生物量排列情况为：干＞枝＞根＞皮＞叶。各器官营养元素含量均以Ca最高， N和K次之， Mg、 P较低。乔木层的营养元素积累总量为10000．23 kg／hm2，主要集中在干材和枝，其次是皮，最少是侧根。顶果木林每积累1 t干物质需要5种营养元素的总量为12．52 kg，其中对Ca的利用效率最低， Mg最高。
본연구재엄서래빈시32년생정과목인공림내선취표준지，채용수획양방법계산림분생물량，동시대림분교목층근、간、지、협、피，관목층근、간、지、협，초본층지상부분화지하부분진행생물량화영양원소함량적측정여분석，이연구기생태계통적영양원소분배특정。결과표명，32년생정과목인공림생태계통생물량위808．25 t／hm2，각기관생물량배렬정황위：간＞지＞근＞피＞협。각기관영양원소함량균이Ca최고， N화K차지， Mg、 P교저。교목층적영양원소적루총량위10000．23 kg／hm2，주요집중재간재화지，기차시피，최소시측근。정과목림매적루1 t간물질수요5충영양원소적총량위12．52 kg，기중대Ca적이용효솔최저， Mg최고。
To guide the Acrocarpus fraxinifolius plantations in Lai-bin of Guangxi province, the accumulation and distribution characteristics of nutrients was analyzed.In sample plot of Acrocarpu fraxinifolius plantation, harvest method was used to measure the biomass, and samples were collected from leaves, branches, stems, and root of arbor layer plants, leaves, twigs, and roots of shrubs, aboveground and underground parts of herbs.The results showed that the total carbon storages of plantation ecosystems was 808.25 t/hm2 .The average biomass content in different organs in tree layer of plantation increased in the order as trunk>branch>root>bark>leaf.Ca was the nu-trient element with highest content, followed by N and K, Mg and P had the lowest content.The nutrient accumu-lation of tree layer 10 000.23 kg/hm2 , mainly in trunk and branches, followed by bark, and the root at the last. The total accumulation of 5 nutrient elements needed for 1 t dry matter for Acrocarpus fraxinifolius plantations were 12.52 kg.The use efficiency of Ca was the least while that Mg was the highest.