Evaluation of the biomass, carbon sequestered and microbiota in a naturally-growing Bambusa vulgaris. Schrad. Ex J.C. Wendl stand

Adedeji Robert Ojo , Nusirat Aderinsola Sadiku , Nathaniel Oluwaseun Haastrup
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Abstract

The world is increasingly facing the conflicting pressures of economic growth and environmental protection, and forests have the capacity to sequester carbon from the atmosphere in large amounts. This study evaluated the biomass, carbon content and microbial activities of a naturally growing Bambusa vulgaris stand at the Forestry Research Institute of Nigeria (FRIN), Ibadan, Oyo state. Three clumps were randomly selected for the study and analyzed to obtain the biomass, carbon content and microbial population. After harvesting, the culm samples were divided into leaf, branch and culm components and their respective fresh weights were taken. All the sub-samples were then oven-dried at 65 °C for 48 h and to get the oven-dried weight, a ratio of oven-dry to fresh weight was calculated. The total stand biomass for B. vulgaris was then determined and computed on a per hectare basis, while the microbiota were determined using standard methods. The B. vulgaris stand stored in total 59.37 t/ha carbon of which 30.55 t/ha were stored in the above-ground biomass (culms, branches and leaves), 1.53 t/ha in the below ground biomass and 24.29 t/ha in the soils. The total biomass stored by the stand was 59.42 t/ha, of which 56.59 t/ha was stored above ground and 2.83 t/ha in the below-ground biomass. Total biomass carbon content in B. vulgaris was 32.08 t/ha. The aboveground carbon storage was much higher in culms (16.69 t/ha) than in branches (8.52 t/ha), leaves (5.32 t/ha), in litter fall (0.02 t/ha) or rhizomes (1.53 t/ha). The total soil carbon content was 24.29 t/ha, of which 8.48 t/ha occurred at 0–15 cm depth, 8.19 t/ha at 15–30 cm, and 7.62 t/ha at 30–45 cm depth. A regression model was developed for future predictions of carbon content of B. vulgaris. About 16 microorganisms were identified in the study (10 bacteria and 6 fungi species) with populations ranging with soil depth. The amount of carbon sequestered and the short time needed for bamboo to grow makes it a good carbon sink, thereby helping to mitigate climate change issues.

自然生长的斑竹的生物量、碳螯合物和微生物群的评估。施拉德。前J.C.Wendl展台
世界正日益面临经济增长和环境保护的矛盾压力,森林有能力从大气中大量封存碳。本研究评估了位于奥约州伊巴丹的尼日利亚林业研究所(FRIN)自然生长的斑竹林分的生物量、碳含量和微生物活性。随机选择三个团块进行研究,并进行分析,以获得生物量、碳含量和微生物种群。收获后,将秆样品分为叶、枝和秆成分,并取其各自的鲜重。然后将所有子样品在65°C下烘干48小时,为了获得烘干重量,计算烘干重量与新鲜重量的比率。然后以每公顷为基础确定和计算B.vulgaris的总林分生物量,同时使用标准方法确定微生物群。B.vulgaris林分共储存59.37t/ha碳,其中30.55t/ha储存在地上生物量(茎、枝和叶)中,1.53t/ha储存于地下生物量中,24.29t/ha储存于土壤中。林分蓄积的总生物量为59.42t/ha,其中地上蓄积56.59t/ha,地下蓄积2.83t/ha。B.vulgaris的总生物量碳含量为32.08t/ha。茎(16.69t/ha)的地上碳储量远高于枝条(8.52t/ha)、叶片(5.32t/ha。建立了一个回归模型,用于预测B.vulgaris的碳含量。研究中鉴定出约16种微生物(10种细菌和6种真菌),其种群随土壤深度的变化而变化。封存的碳量和竹子生长所需的短时间使其成为一个良好的碳汇,从而有助于缓解气候变化问题。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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