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Carbon stock under major land use/land cover types of Hades sub-watershed, eastern Ethiopia.

ABSTRACT: BACKGROUND:Developing land management scenarios that have the potential to sequester carbon and reduce greenhouse gasses (GHG) emission on a sustainable basis entails quantifying the current carbon stock under different land uses. In light of this, a study was conducted in Hades sub-watershed, eastern Ethiopia, to explore the carbon stock under four major land uses: natural forest, coffee agroforestry, grazing land and cropland, involving samples from four carbon pools: aboveground, belowground, litter, and soil. To this end, vegetation and soil samples were collected from the respective land uses following recommended procedures. RESULTS:The results indicate that organic carbon concentration decreased with soil depth though substantial amount of carbon was found in the lower soil depths under land use with woody perennials. The mean total organic carbon stock ranged from 138.95 t ha-1 in the cropland to 496.26 t ha-1 in the natural forest. The soil organic carbon stock was found to be relatively higher than that of the vegetation carbon stock in the natural forest and coffee agroforestry land uses. CONCLUSION:This study highlights the importance of assessing watershed level carbon stock for better and carbon friendly land use decision making. Land uses with woody perennials have high carbon stock than those without. Hence, conservation-based production systems with inclusion of woody perennials are options suggested to enhance carbon sequestration in the sub watershed.

SUBMITTER: Toru T

PROVIDER: S-EPMC7227236 | biostudies-literature | 2019 May

REPOSITORIES: biostudies-literature

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Carbon stock under major land use/land cover types of Hades sub-watershed, eastern Ethiopia.

Toru Tessema T Kibret Kibebew K

Carbon balance and management 20190522 1

<h4>Background</h4>Developing land management scenarios that have the potential to sequester carbon and reduce greenhouse gasses (GHG) emission on a sustainable basis entails quantifying the current carbon stock under different land uses. In light of this, a study was conducted in Hades sub-watershed, eastern Ethiopia, to explore the carbon stock under four major land uses: natural forest, coffee agroforestry, grazing land and cropland, involving samples from four carbon pools: aboveground, belo ...[more]

PMID: 31119402

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Project description:BackgroundIn Ethiopia, highland bamboo has been cultivated in various niches: farmlands, riverbanks, woodlot boundaries, and homesteads, and agroforestry systems. However, the biomass and carbon storage of potential of bamboo forests across niches is not well characterized in Ethiopia. Therefore, this study was conducted to estimate the biomass and carbon storage potential of highland bamboo plantations in northwestern Ethiopia. To this end, a total of 60 circular plots measuring 100 m2 with a radius of 5.64 m were randomly established on the homestead, woodlot, and riverbank plantation niches to conduct the inventory. The biomass storage of bamboo was calculated based on previously published allometric equations. Biomass and carbon stock variations among age-classes and niches of bamboo forests were analyzed using analysis of variance (ANOVA) and subsequent pairwise means comparisons of carbon stocks among niches were performed via post hoc Tukey test at p < 0.05.ResultsResults showed that the mean aboveground biomass (AGB) ranged from 150.18 - 191.42 Mg ha-1 in the entire niches. The highest amount of AGB was stored in the homestead niche (191.42 Mg ha-1) followed by the woodlot (180.11 Mg ha-1) and riverbank niche (150.17 Mg ha-1), respectively. The highest carbon stock (111.56 Mg C ha-1) was found in the homestead niche while the smallest amount was recorded in the riverbank niche (87.52 Mg ha-1). The homestead bamboo plantation has the highest biomass storage due to the application of manure and natural fertilizer, regular harvesting and management of culms, and protection from illegal harvesting and grazing.ConclusionThis study highlights the importance of bamboo plantations in climate change mitigation. Hence, bamboo plantation should be promoted; and natural resource management and forestry departments of the government, Universities, research centers, the International Bamboo and Rattan Organization (INBAR), and other partners should work with local communities to expand bamboo plantation on their homesteads and degraded lands.

Dataset Information

Carbon stock under major land use/land cover types of Hades sub-watershed, eastern Ethiopia.

Publications

Carbon stock under major land use/land cover types of Hades sub-watershed, eastern Ethiopia.

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