{"title":"Soil organic carbon storage in a tropical freshwater wetland: the influence of vegetation type","authors":"David Were, F. Kansiime, T. Fetahi, T. Hein","doi":"10.2989/16085914.2020.1804821","DOIUrl":null,"url":null,"abstract":"The impact of different vegetation communities on soil organic carbon (SOC) in a tropical freshwater wetland in Uganda was investigated. SOC content, density and storage potential were determined under three different dominant vegetation communities: Cyperus papyrus L., Typha latifolia L. and Phragmites mauritianus Kunth. SOC content (123.7 ± 2.6 SE g C kg−1 dry soil) in C. papyrus was significantly higher (p < 0.05) than in both T. latifolia and P. mauritianus, whereas SOC density (kg C m−2) insignificantly varied (p > 0.05) among the three vegetation communities (C. papyrus = 7.2 ± 0.1, T. latifolia = 6.7 ± 0.1 and P. mauritianus = 6.2 ± 0.1). Similarly, for the entire sampled soil depth (0–50 cm), SOC storage potential was significantly higher (p < 0.05) in C. papyrus (36 118.08 ± 552.52 t C km−2), and was in the order of decreasing magnitude: C. papyrus > T. latifolia > P. mauritianus. Plant biomass density, and soil physico-chemical characteristics, bulk density, salinity, pH and temperature were significantly correlated (p < 0.05) with SOC. In conclusion, where climate change mitigation is considered as a wetland ecosystem service, restoration priorities for degraded/lost tropical freshwater wetlands need to consider C. papyrus plants. In addition, comparing SOC storage by ecosystems, Uganda’s wetlands contain three times more SOC than is contained in the country’s forests.","PeriodicalId":7864,"journal":{"name":"African Journal of Aquatic Science","volume":"46 1","pages":"161 - 172"},"PeriodicalIF":1.1000,"publicationDate":"2021-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.2989/16085914.2020.1804821","citationCount":"3","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"African Journal of Aquatic Science","FirstCategoryId":"93","ListUrlMain":"https://doi.org/10.2989/16085914.2020.1804821","RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MARINE & FRESHWATER BIOLOGY","Score":null,"Total":0}
引用次数: 3
Abstract
The impact of different vegetation communities on soil organic carbon (SOC) in a tropical freshwater wetland in Uganda was investigated. SOC content, density and storage potential were determined under three different dominant vegetation communities: Cyperus papyrus L., Typha latifolia L. and Phragmites mauritianus Kunth. SOC content (123.7 ± 2.6 SE g C kg−1 dry soil) in C. papyrus was significantly higher (p < 0.05) than in both T. latifolia and P. mauritianus, whereas SOC density (kg C m−2) insignificantly varied (p > 0.05) among the three vegetation communities (C. papyrus = 7.2 ± 0.1, T. latifolia = 6.7 ± 0.1 and P. mauritianus = 6.2 ± 0.1). Similarly, for the entire sampled soil depth (0–50 cm), SOC storage potential was significantly higher (p < 0.05) in C. papyrus (36 118.08 ± 552.52 t C km−2), and was in the order of decreasing magnitude: C. papyrus > T. latifolia > P. mauritianus. Plant biomass density, and soil physico-chemical characteristics, bulk density, salinity, pH and temperature were significantly correlated (p < 0.05) with SOC. In conclusion, where climate change mitigation is considered as a wetland ecosystem service, restoration priorities for degraded/lost tropical freshwater wetlands need to consider C. papyrus plants. In addition, comparing SOC storage by ecosystems, Uganda’s wetlands contain three times more SOC than is contained in the country’s forests.
研究了乌干达热带淡水湿地不同植被群落对土壤有机碳(SOC)的影响。测定了3个不同优势植被群落:莎草群落(Cyperus papyrus L.)、风叶群落(Typha latifolia L.)和芦苇群落(Phragmites mauritianus Kunth)的有机碳含量、密度和储量潜力。纸莎草群落的有机碳含量(123.7±2.6 SE g C kg - 1)显著高于阔叶草和毛利草群落(p < 0.05),而有机碳密度(kg C - 2)在3个植被群落(纸莎草群落= 7.2±0.1,阔叶草群落= 6.7±0.1,毛利草群落= 6.2±0.1)间差异不显著(p < 0.05)。同样,在整个采样土壤深度(0 ~ 50 cm)上,纸莎草(36 118.08±552.52 t C km−2)的有机碳储量潜力显著高于其他植物(p < 0.05),且储量潜力的递减顺序为:纸莎草(C. papyrus) > t . latifolia > p . mauritianus。植物生物量密度、土壤理化性状、容重、盐度、pH和温度与有机碳呈显著相关(p < 0.05)。总之,当气候变化减缓被视为一种湿地生态系统服务时,退化/消失的热带淡水湿地的恢复优先事项需要考虑纸莎草植物。此外,通过比较不同生态系统的有机碳储量,乌干达湿地的有机碳含量是该国森林的三倍。
期刊介绍:
The African Journal of Aquatic Science is an international journal devoted to the study of the aquatic sciences, covering all African inland and estuarine waters. The Journal publishes peer-reviewed original scientific papers and short articles in all the aquatic science fields including limnology, hydrobiology, ecology, conservation, biomonitoring, management, water quality, ecotoxicology, biological interactions, physical properties and human impacts on African aquatic systems.