Contemporary land use/land cover types determine soil organic carbon stocks in south-west Rwanda

Wasige, John Ejiet; Groen, T.A.; Rwamukwaya, Bana Mediatrice; Tumwesigye, Wycliffe; Smaling, E.M.A.; Jetten, Victor

doi:10.1007/s10705-014-9623-z

Cited by 31 publications

(13 citation statements)

References 64 publications

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“…These values are comparable to 84 t C/ha found in forest areas in Vale dos Vinhedos at the same depth based on the equivalent soil mass. Wasige et al (2014), studying SOC in Rwanda until 50 cm depth, found under forest, stocks ranged 295 t C/ha in Cambisols to 487 t C/ha in Histosols. These values were not corrected by mass and are higher than the 115 t C/ha found in Vale dos Vinhedos (Table 6), for forest until 60 cm depth, corrected by mass.…”

Section: Soc Concentration and Stocksmentioning

confidence: 99%

Digital mapping of soil carbon in a viticultural region of Southern Brazil

et al. 2016

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Section: Soc Concentration and Stocksmentioning

confidence: 99%

Digital mapping of soil carbon in a viticultural region of Southern Brazil

et al. 2016

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“…The SOC stock in the home garden was greater by 21.4 Mg ha −1 from the cropland. Consistently, SOC was higher in banana–coffee agroforestry than the cropland in Rwanda ( Wasige et al., ) and in the home garden in central Ethiopia ( Duguma et al., ) as compared to the respective annual croplands. Kim et al.…”

Section: Discussionmentioning

confidence: 76%

“…The SOC stock in the home garden was greater by 21.4 Mg ha -1 from the cropland. Consistently, SOC was higher in banana-coffee agroforestry than the cropland in Rwanda (Wasige et al, 2014) and a Mean values of each treatment and each factor in a column followed by the same letter are not significantly different. a Mean values of each treatment and each factor in a column followed by the same letter are not significantly different.…”

Section: Discussionmentioning

confidence: 78%

“…This system is perceived as sustainable and fertile, and having a potential for C sequestration (Saha et al, 2009;Negash and Starr, 2015;Kim et al, 2016). Home gardens were mostly studied for their impact on soil properties by comparing home gardens of different size and diversity (Saha et al, 2009;Negash and Starr, 2015;Subba et al, 2018) as well as with mono crops such as sugarcane and khat (Wasige et al, 2014;Kim et al, 2016). Tittonell et al (2014) assessed the soil properties with increasing distance from the home garden to croplands covered with different crops.…”

Section: Introductionmentioning

confidence: 99%

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Soil organic carbon and nutrients in smallholding land uses in southern Ethiopia

Lulu

Lemma

Melese

2019

J. Plant Nutr. Soil Sci.

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This study assessed the soil organic C (SOC) and soil nutrients in smallholding home garden, woodlot, grazing land, and cropland at two soil depths and two sites in Wolaita Zone, southern Ethiopia. The results showed that soil properties were significantly influenced by land use. The home garden had significantly higher (p < 0.05) SOC and soil nutrients when compared to the cropland. When the home garden was compared to the woodlot and grazing land uses, it had significantly higher (p < 0.05) values except in SOC, total N (TN), cation exchange capacity (CEC), and exchangeable Ca. Cropland, in comparison with grazing land and woodlot, had a non-significant difference except TN. The SOC stock (0-40 cm) in the home garden, woodlot, grazing land and cropland was 79.5, 68.0, 65.0, and 58.1 Mg ha -1 , respectively. Home garden significantly differed (p 0.05) in SOC only from cropland, and this was attributed not only to the relatively higher organic input in the home garden but also to the little organic matter input and frequently tillage of the cropland. The similar SOC among the home garden, woodlot and grazing lands may imply that the balance between inputs and outputs could be nearly similar for the land uses. Soil TN and CEC had a nearly similar pattern of difference as in SOC among the land uses because of their close relationship with SOC. In general, the land use influence on soil nutrients can be in the order: home garden > wood land grazing land cropland, with home garden showing the least difference from the woodlot and the greatest from the cropland. In the agroecosystem, in general, the influence of smallholding home garden on SOC and soil nutrient was marginally different from Eucalyptus woodlot and grazing lands but evidently different from cropland.

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“…This corroborates findings of Nsabimana et al . () and Wasige et al () in afforested sites of southern Rwanda, although Nsabimana et al . () found higher contents in some eucalyptus forests.…”

Section: Discussionmentioning

confidence: 99%

Effects of Land Use on Microbial Indices in Tantalite Mine Soils, Western Rwanda

2016

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Rare metal mining in western Rwanda created massive degraded mine wastelands. Some of them were restored by afforestation with pine and eucalyptus forests while others have been cultivated alongside arable lands, owing to limited land availability. We assessed the effects of these land uses on microbial biomass and activity (basal C and net N mineralization) in a laboratory experiment with fresh soils (0–20 cm) of an unmined native forest, two tantalite mine soils (Technosols) afforested with pine and eucalyptus forests, an arable soil, and two cultivated Technosols. Afforestation increased soil organic C (SOC) and total N in pine and eucalyptus Technosols, reaching 34–40% and 28–30%, respectively, of that in the native forest. The tree species differed significantly in microbial activity and biomass, exhibiting a trajectory towards recovery depicted in lower metabolic quotient. Basal respiration of pine Technosol and native forest soil were similar, while that of eucalyptus Technosol was 11 and 14% less compared to its forest counterparts. Conversely, net N mineralization in pine and eucalyptus Technosols were 40 and 65% of that in native forest soil, respectively. Soil microbial biomass C in pine and eucalyptus Technosols were 33 and 48% of that in native forest soil. Furthermore, a decreased SOC availability to soil microorganisms at low soil pH promoted fungal ergosterol as an indicator for saprotrophic fungi. The arable soil and cultivated Technosols did not differ significantly in SOC, N, microbial biomass, and activity. The soil biological quality was constrained by soil acidity, dithionite‐extractable Al, and low P availability. Copyright © 2016 John Wiley & Sons, Ltd.

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Contemporary land use/land cover types determine soil organic carbon stocks in south-west Rwanda

Cited by 31 publications

References 64 publications

Digital mapping of soil carbon in a viticultural region of Southern Brazil

Digital mapping of soil carbon in a viticultural region of Southern Brazil

Soil organic carbon and nutrients in smallholding land uses in southern Ethiopia

Effects of Land Use on Microbial Indices in Tantalite Mine Soils, Western Rwanda

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