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Estimating Ecological Characteristics and Carbon Stock in Uneven-Aged Plantations of Acacia senegal L. in the Savannah Woodlands of Sudan

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Journal of Environmental Protection 2023年第5期14卷 404-418页

作者： Fatima Elhassan Awadalla Abass safa salaheldine mubarak khugali Nagla Abdelmounaim Mohammed Ahmed Ahmed Laamrani Elsadig Agabna Elhadi Ahmed Ali Hassabelkareem Siddig Edouard Konan Kouassi Department of Soil and Environmental Science Faculty of Agriculture University of Khartoum (UofK) Khartoum Sudan African Center of Excellence in Climate Change Biodiversity & Sustainable Agriculture (CEA-CCBAD) University Felix Houphou&eumlt-Boigny Abidjan C&ocircte d’Ivoire Centre for Remote Sensing Applications (CRSA) Mohammed VI University (UM6P) Ben Guerir Morocco Environmental and Natural Resources and Desertification Institute National Center for Research (NCR) Khartoum Sudan Institute of Environmental Studies University of Khartoum Khartoum Sudan Department of Forest Conservation and Protection Faculty of Forestry University of Khartoum (UofK) Khartoum Sudan

The aim of this study was to assess Acacia senegal trees’ characteristics as well as evaluate the carbon stock under a variety of ages in the El Demokeya forest in Sudan, where the Gum Arabic belt is located. 12 sample plots, in 2021 were randomly distributed to represent the entire area of the forest prior to the required measurements. The sample was designed as squire plots with one hectare. In each sample plot, all trees were counted, their height (m), and Diameters Breast Height (DBH in cm), respectively. The results showed the highest number of trees per ha at age 20 years old and the lowest number at age 47 years, while the highest values of DBH and volume were found at age 47 years old. As a result, the maximum and minimum values of the aboveground biomass were found in the age 47 years old and 16 years, accounting for 19.87 tons and 1.9 tons respectively. Thus, the amount of carbon stock was 11.92 tons/ha in the 35-years-old and 1.19 tons/ha in the 21-year stands. Furthermore, the average carbon stock in all plots was estimated as 18.70 tons/ha and hence the total carbon stock in the El Demokeya forest is equal to 620.11 tons. Conclusively, the characteristics of trees, amount of aboveground biomass and carbon stock in the El Demokeya forest varied among the uneven-aged plantation groups. The study recommends and encourages the protection of A. senegal in order to increase the carbon sink as well as protect the environment in the era of climatic changes.

关键词： Aboveground Biomass Soil Organic Carbon Dry Lands Forest Climate Change Mitigation Carbon

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