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提高林分碳储量估测精度,对于研究区域尺度上森林固碳功能具有重要的意义。本文以上海外环林带女贞(Ligustrum lucidum)人工林为研究对象,构建了女贞立木及各器官(根、干、皮、枝、叶)生物量方程,并对9年生女贞人工林乔木层、地表枯落物层和土壤层(0~100 cm)碳储量进行了估测。结果表明,女贞立木及各器官生物量方程拟合效果较好(R2>0.9,P<0.01)。女贞人工林生态系统总碳储量为169.89 t·hm-2,其中林分乔木层碳储量为10.48 t·hm-2,地表枯落物层碳储量为1.54 t·hm-2,林分土壤(0~100 cm)碳储量所占比例最大,为157.7 t·hm-2。在女贞人工林乔木层生物量中,树干占林木生物量的比例最大(40%),其次分别为枝(20%)、根(15%)、叶(11%)和皮(4%)。
Increasing the estimation accuracy of carbon stocks in forest stands is of great significance for studying the function of forest carbon fixation on the regional scale. In this paper, the biomass of Ligustrum lucidum plantations in Shanghai outer ring forest was studied to establish the biomass equation of Ligustrum lucidum plantation and its organs (root, stem, skin, branch and leaf) , Surface litter layer and soil layer (0 ~ 100 cm) carbon storage were estimated. The results showed that the fitting effect of stand volume and the biomass of each part was better (R2> 0.9, P <0.01). The total carbon storage of the forest ecosystem was 169.89 t · hm-2. The carbon storage of forest tree layer was 10.48 t · hm-2 and that of litter layer was 1.54 t · hm-2. The stand soil (0 ~ 100 cm) carbon storage accounted for the largest proportion of 157.7 t · hm-2. Among the arborleaf forest biomass, trunks accounted for the largest proportion of tree biomass (40%), followed by branches (20%), roots (15%), leaves (11%) and barks (4% .