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International Journal of Forestry Research Volume 2020 ,2020-03-29
Estimates of Volume and Carbon Stock Removals in Miombo Woodlands of Mainland Tanzania
Research Article
Bernardol John Manyanda 1 Emmanuel F. Nzunda 1 Wilson Ancelm Mugasha 1 Rogers Ernest Malimbwi 1
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DOI:10.1155/2020/4043965
Received 2019-04-11, accepted for publication 2020-02-25, Published 2020-03-29
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摘要

Miombo woodlands are major vegetation type covering about 93% of the forest land of Mainland Tanzania. It forms an integral part of the rural landscape in Tanzania and plays a crucial role in providing a wide range of goods and services including carbon sequestration. However, the sustainability of forest resources is mostly affected by the magnitude of its utilization. There should be a balance between the forest growth and removals. Nevertheless, the magnitude of removed volume and carbon in the country is not known. Quantification of volume, biomass, and carbon stocks removals is vital in developing effective climate change mitigation strategies, decision making, and promoting sustainable forest management. Based on the National Forest Resources Monitoring and Assessment data (NAFORMA) comprising 7,026 stumps collected from 16,803 circular plots of 10 m and 15 m radii established in Miombo woodlands of Mainland Tanzania, volume and carbon stock removals were estimated with the use of models that utilize stump diameter (SD) as the sole predictor. Results indicate that the annual volumes, aboveground biomass removed, and belowground biomass removed were 1.71 ± 0.54 m3 ha−1 year−1, 1.23 ± 0.37 t ha−1 year−1, and 0.43 ± 0.12 t ha−1 year−1, respectively. In addition, the corresponding aboveground and belowground carbon removed were found to be 0.6 ± 0.18 tC ha−1 year−1 and 0.21 ± 0.05 tC ha−1 year −1 respectively. Since the estimated annual volume removals exceed estimated mean annual increment of 1.6 ± 0.2 m3 ha−1 year−1 in Miombo woodlands, the removals indicate unsustainability that would end up into forest degradation. The results also show that removals are more prominent in the following categories: shifting cultivation, production forest, grazing land, general land, village land, and Eastern and Southern zones. This paper calls for increased appropriate management strategies to ensure sustainability in these land categories and in the entire Miombo woodlands of Mainland Tanzania.

授权许可

Copyright © 2020 Bernardol John Manyanda et al. 2020
This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

通讯作者

Bernardol John Manyanda.Department of Forest Resources Assessment and Management, College of Forestry, Wildlife and Tourism, Sokoine University of Agriculture, P.O. Box 3013, Chuo Kikuu, Morogoro, Tanzania, suanet.ac.tz.bernardoljohnm@gmail.com

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Bernardol John Manyanda,Emmanuel F. Nzunda,Wilson Ancelm Mugasha,Rogers Ernest Malimbwi. Estimates of Volume and Carbon Stock Removals in Miombo Woodlands of Mainland Tanzania. International Journal of Forestry Research ,Vol.2020(2020)

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