CAJ | 학술논문

以青海海北高寒区域金露梅(Potentilla fruticosa Linn.)灌丛草甸为研究对象,分析了6月至9月金露梅灌丛草甸灌木和草本植物不同部位的生物碳量,并据此对灌木及草本植物的年净初级生产碳量进行了比较。结果显示：金露梅灌丛草甸灌木植物地上部和地下部不同层次的生物量和碳含量均有明显差异,根据生物量所占比例确定其地上部和地下部的平均碳含量分别为0.50和0.48。依据不同月份灌丛冠面最大长度、最小宽度和最大高度,采用方程“Wij =e〔aln(A·B·H)+b〕”计算灌木地上当年新生生物碳量、地上多年累积生物碳量和地下多年累积生物碳量,相关性均极显著(P<0.01),表明利用该方程评估金露梅灌丛草甸灌木不同部位的生物碳量是可行的。不同月份金露梅灌丛草甸灌木地上当年新生生物碳量、地上多年累积生物碳量和地下多年累积生物碳量分别为9.36~21.15、78.07~90.12和74.37~101.22 g·m-2,差异不明显；其地上部和地下部净初级生产碳量分别为33.20和26.85 g·m-2,总计为60.05 g·m-2。金露梅灌丛草甸草本植物地上部和地下部净初级生产碳量分别为111.41和445.41 g·m-2,总计为556.82 g·m-2。如果根据草本和灌木占地面积78%和22%进行加权计算,则金露梅灌丛草甸当年的总净初级生产碳量为447.53 g·m-2,其中灌木的净初级生产碳量仅占2.95%,且金露梅灌丛草甸地下部与地上部净初级生产碳量的比值为3.75。研究结果显示：青海高寒区域金露梅灌丛草甸以草本固碳为主,且地下部净初级生产碳量明显高于其地上部。
이청해해북고한구역금로매(Potentilla fruticosa Linn.)관총초전위연구대상,분석료6월지9월금로매관총초전관목화초본식물불동부위적생물탄량,병거차대관목급초본식물적년정초급생산탄량진행료비교。결과현시：금로매관총초전관목식물지상부화지하부불동층차적생물량화탄함량균유명현차이,근거생물량소점비례학정기지상부화지하부적평균탄함량분별위0.50화0.48。의거불동월빈관총관면최대장도、최소관도화최대고도,채용방정“Wij =e〔aln(A·B·H)+b〕”계산관목지상당년신생생물탄량、지상다년루적생물탄량화지하다년루적생물탄량,상관성균겁현저(P<0.01),표명이용해방정평고금로매관총초전관목불동부위적생물탄량시가행적。불동월빈금로매관총초전관목지상당년신생생물탄량、지상다년루적생물탄량화지하다년루적생물탄량분별위9.36~21.15、78.07~90.12화74.37~101.22 g·m-2,차이불명현；기지상부화지하부정초급생산탄량분별위33.20화26.85 g·m-2,총계위60.05 g·m-2。금로매관총초전초본식물지상부화지하부정초급생산탄량분별위111.41화445.41 g·m-2,총계위556.82 g·m-2。여과근거초본화관목점지면적78%화22%진행가권계산,칙금로매관총초전당년적총정초급생산탄량위447.53 g·m-2,기중관목적정초급생산탄량부점2.95%,차금로매관총초전지하부여지상부정초급생산탄량적비치위3.75。연구결과현시：청해고한구역금로매관총초전이초본고탄위주,차지하부정초급생산탄량명현고우기지상부。
Taking Potentilla fruticosa Linn. shrub meadow in alpine region of Qinghai Province as the research object, the biomass carbon content of different parts of shrub and herb in P. fruticosa shrub meadow from June to September was analyzed, and on this basis, the annual net primary carbon production ( NPCP) of shrub and herb was also compared. The results show that there are obvious differences in biomass and carbon content of different layers in above- and under-ground parts of shrub inP. fruticosa shrub meadow, and according to the proportion of biomass, average carbon content of above-and under-ground parts is determined as 0. 50 and 0. 48, respectively. Based on the maximum length, minimum width and maximum height of canopy surface of shrub in different months, the newly biomass carbon content at current year in above-ground part, the perennial accumulation biomass carbon contents in above- and under-ground parts of shrub were calculated by the equation “Wij = e〔aln(A·B·H)+b〕 ”, with the extremely significant correlation (P<0. 01), it means that it is feasible to evaluate biomass carbon content in different parts of shrub in P. fruticosa shrub meadow by this equation. The newly biomass carbon content at current year in above-ground part, the perennial accumulation biomass carbon contents in above- and under-ground parts of shrub in P . fruticosa shrub meadow among different months is 9. 36-21. 15, 78. 07-90. 12 and 74. 37-101. 22 g·m-2 , respectively, with no obvious difference. And NPCP in above- and under-ground parts of shrub is 33. 20 and 26. 85 g·m-2 , respectively, and total is 60. 05 g·m-2 . NPCP in above- and under-ground parts of herb in P. fruticosa shrub meadow is 111. 41 and 445. 41 g·m-2 , respectively, and total is 556. 82 g·m-2 . If weighted calculation is carried out according to occupied area of herb and shrub of 78% and 22% , respectively, total NPCP of P. fruticosa shrub meadow in current year is 447. 53 g·m-2 , in which, NPCP of shrub accounts for only 2. 95% , and the ratio of NPCP of under-ground part to that of above-ground part of P. fruticosa shrub meadow is 3. 75. It is suggested that fixed carbon of herb is dominant in P. fruticosa shrub meadow in alpine region of Qinghai Province, and NPCP of under-ground part is obviously higher than that of above-ground part.