Allometric scaling, biomass accumulation and carbon stocks in natural highland bamboo (Oldeania alpina (K. Schum.) Stapleton) stands in Southwestern Ethiopia

IF 2.8 4区环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES

Carbon Management Pub Date : 2022-01-02 DOI:10.1080/17583004.2022.2130090

Dagnew Yebeyen, S. Nemomissa, G. Sileshi, Worku Zewdie, B. Hailu, R. Rodríguez, F. H. Desalegne, T. M. Woldie

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引用次数: 3

Abstract

Abstract Bamboos provide a number of ecosystem services, including the provision of a permanent carbon (C) sink. The present study was undertaken in the Sheka forest, currently recognized as a UNESCO Biosphere Reserve. The objectives of this study were to: (1) develop species- and site-specific allometric models for biomass estimation and (2) quantify the carbon storage capacity of highland bamboo stands. A total of 12 plots each measuring 10 m x 10 m were established at a distance of 200 m in the forest. 96 culms were harvested for the development of biomass estimation equations. Litter samples were collected in 1 m x 1 m subplots, while soil samples were collected at 0–10, 10–20, 20–40, and 40–60 cm soil depths for determination of soil organic carbon (SOC) contents. The estimated mean DBH, basal area and plant height were 7.0 cm, 53.2 m2 ha−1 and 12.9 m, respectively. The study has established allometric scaling of plant height with stem diameter in highland bamboo. It has also established that the allometric model is superior to commonly used non-linear H-DBH models. Aboveground biomass was estimated at 93 Mg ha−1 with mean C stocks of 43.7 Mg ha−1. The estimated below-ground biomass was 18.6 Mg ha−1 with C stocks of 8.7 Mg ha−1. The C stocks in the litter layer were estimated at 1.57 Mg ha−1. Average soil C storage was estimated at 388.12 Mg ha−1 within the 0–60 cm soil depth. In total, the natural highland bamboo stands store approximately 442.1 Mg C ha−1. The estimated C stocks were comparable with values reported for bamboos in Ethiopia and elsewhere. It is concluded that natural highland bamboo stands play a significant role as carbon sinks. The insights gained in this study are expected to be applicable to Afromontane ecosystems where highland bamboo occurs in Africa. HIGHLIGHTS Highland bamboo (Oldeania alpina) is a conspicuous element of Afromontane vegetation in Africa We developed models for estimating biomass carbon (C) stocks in highland bamboo stands We estimated biomass C stock of highland bamboo stands at 52.5 Mg ha−1 and litter C at 1.6 Mg ha−1 Soil organic C stock of highland bamboo stands was 388.1 Mg ha−1 Total system C in highland bamboo stands was over 442 Mg ha−1

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埃塞俄比亚西南部天然高原竹（Oldeania alpina（K.Schum.Stapleton））的异速缩放、生物量积累和碳储量

摘要竹子提供了许多生态系统服务，包括提供永久性碳（C）汇。本研究是在谢卡森林进行的，该森林目前被认定为联合国教科文组织生物圈保护区。本研究的目的是：（1）开发用于生物量估计的物种和特定地点的异速生长模型；（2）量化高原竹林的碳储存能力。共有12个地块，每个地块测量10 m x 10 m的距离我在森林里。收获96根秆，用于开发生物量估算方程。垃圾样本收集于1 m x 1 m亚地块，而土壤样本分别在0–10、10–20、20–40和40–60采集 cm土壤深度，用于测定土壤有机碳（SOC）含量。估计的平均DBH、基底面积和株高为7.0 厘米，53.2 m2 ha−1和12.9 m、分别。本研究建立了高原竹株高与茎径的异速标度。它还证实了异速模型优于常用的非线性H-DBH模型。地上生物量估计为93 Mg ha−1，平均C储量为43.7 Mg ha−1。估计地下生物量为18.6 Mg ha−1，C储量为8.7 Mg ha−1。枯枝落叶层中的碳储量估计为1.57 Mg ha−1。土壤平均碳储量估计为388.12 Mg ha−1在0–60范围内 cm土壤深度。总的来说，天然高原竹林储存量约为442.1 Mg C ha−1。估计的碳储量与埃塞俄比亚和其他地方竹子的报告值相当。结果表明，天然高原竹林具有重要的碳汇作用。这项研究中获得的见解预计将适用于非洲高地竹子生长的非洲山地生态系统。亮点高原竹子（Oldeania alpina）是非洲非洲山地植被的一个显著元素。我们开发了估算高原竹林生物量碳储量的模型。我们估算了高原竹林的生物量碳存量为52.5 Mg ha−1和枯枝落叶层C为1.6 高原竹林土壤有机碳储量为388.1 Mg-ha−1高原竹林全系统C含量达442以上 Mg ha−1

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来源期刊

Carbon Management ENVIRONMENTAL SCIENCES-

CiteScore

5.80

自引率

3.20%

发文量

期刊介绍： Carbon Management is a scholarly peer-reviewed forum for insights from the diverse array of disciplines that enhance our understanding of carbon dioxide and other GHG interactions – from biology, ecology, chemistry and engineering to law, policy, economics and sociology. The core aim of Carbon Management is it to examine the options and mechanisms for mitigating the causes and impacts of climate change, which includes mechanisms for reducing emissions and enhancing the removal of GHGs from the atmosphere, as well as metrics used to measure performance of options and mechanisms resulting from international treaties, domestic policies, local regulations, environmental markets, technologies, industrial efforts and consumer choices. One key aim of the journal is to catalyse intellectual debate in an inclusive and scientific manner on the practical work of policy implementation related to the long-term effort of managing our global GHG emissions and impacts. Decisions made in the near future will have profound impacts on the global climate and biosphere. Carbon Management delivers research findings in an accessible format to inform decisions in the fields of research, education, management and environmental policy.