Influence of elevation, soil temperature and soil moisture content on reclaimed mine land soil CO2 fluxes

Mathiba, Moagabo; Awuah–Offei, Kwame; Baldassare, Fred

doi:10.1007/s12665-014-3839-8

Cited by 6 publications

(2 citation statements)

References 26 publications

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“…Crop residue mulching under NTCG decreased the topsoil temperature because crop residue layers were reported to increase the reflection of solar radiation, which acted as insulation between the soil surfaces and the warmer (or cooler) atmospheric air [52,53]. This explanation is consistent with the present study result showing an increase in soil CO2 effluxes with soil temperature, and also a decrease in soil CO2 effluxes with soil water content (Figure 4), which agreed with other study results [54][55][56][57]. These studies explained that the increase in soil temperature at optimum soil moisture content stimulated soil microbial activities, which subsequently increase CO2 emissions from the soil.…”

Section: Discussionsupporting

confidence: 93%

Controlled Grazing of Maize Residues Increased Carbon Sequestration in No-Tillage System: A Case of a Smallholder Farm in South Africa

et al. 2021

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Despite the positive impact of no-tillage (NT) on soil organic carbon (SOC), its potential to reduce soil CO2 emission still needs enhancing for climate change mitigation. Combining NT with controlled-grazing of crop residues is known to increase nutrient cycling; however, the impacts on soil CO2 effluxes require further exploration. This study compared soil CO2 effluxes and SOC stocks from conventional tillage with free grazing (CTFG), NT with free grazing (NTFG), NT without grazing (NTNG), NT without crop residues (NTNR) and NT with controlled-grazing (NTCG), in South Africa. Soil CO2 effluxes were measured 1512 times over two years using LI-COR 6400XT, once to thrice a month. Baseline SOCs data were compared against values obtained at the end of the trial. Overall, NTCG decreased soil CO2 fluxes by 55 and 29% compared to CTFG and NTNR, respectively. NTCG increased SOCs by 3.5-fold compared to NTFG, the other treatments resulted in SOC depletion. The increase in SOCs under NTCG was attributed to high C input and also low soil temperature, which reduce the SOC mineralization rate. Combining NT with postharvest controlled-grazing showed high potential to increase SOCs, which would help to mitigate climate change. However, it was associated with topsoil compaction. Therefore, long-term assessment under different environmental, crop, and soil conditions is still required.

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Section: Discussionsupporting

confidence: 93%

Controlled Grazing of Maize Residues Increased Carbon Sequestration in No-Tillage System: A Case of a Smallholder Farm in South Africa

et al. 2021

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“…The results of our study are in agreement with the previously published work in the similar climatic conditions that reported greater soil CO 2 flux in afforested mine soils compared to natural forests [7,53]. Mathiba et al [54] Afforestation of former coal mine land stored a significant amount of carbon in plant biomass and soil thus playing an important role in sequestering atmospheric CO 2 . In terms of CO 2 sequestration, the present study showed a greater amount of CO 2 storage by natural forest.…”

Section: Effect Of Afforestation On Ecosystem Carbon Poolsupporting

confidence: 93%

Effect of Fast-Growing Trees on Soil Properties and Carbon Storage in an Afforested Coal Mine Land (India)

2020

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Surface coal mining activities have numerous consequences on terrestrial ecosystems. Loss of soil and biomass carbon pool due to mining activities is a serious concern in the rapidly changing environment. We investigated the effect of fast-growing trees (Albizia lebbeck, Albizia procera, and Dalbergia sissoo) on soil fertility and ecosystem carbon pool after eight years of afforestation in the post-mining land of Jharia coalfield, India, and compared with the adjacent natural forest site. Significant differences in soil organic carbon (SOC) and total nitrogen (TN) stocks in afforested mine soil and natural forest soils were observed. Greater SOC stock was found under D. sissoo (30.17 Mg·C·ha−1) while total N stock was highest under A. lebbeck (4.16 Mg·N·ha−1) plantation. Plant biomass accumulated 85% of the natural forest carbon pool after eight years of afforestation. The study concluded that planting fast-growing trees in post-mining lands could produce a promising effect on mine soil fertility and greater carbon storage in a short period.

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Coupled variations of soil temperature and moisture in reclaimed fields filled with coal gangue of different grain size distributions

Zhang

Huang

et al. 2020

J Soils Sediments

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Influence of elevation, soil temperature and soil moisture content on reclaimed mine land soil CO2 fluxes

Cited by 6 publications

References 26 publications

Controlled Grazing of Maize Residues Increased Carbon Sequestration in No-Tillage System: A Case of a Smallholder Farm in South Africa

Controlled Grazing of Maize Residues Increased Carbon Sequestration in No-Tillage System: A Case of a Smallholder Farm in South Africa

Effect of Fast-Growing Trees on Soil Properties and Carbon Storage in an Afforested Coal Mine Land (India)

Coupled variations of soil temperature and moisture in reclaimed fields filled with coal gangue of different grain size distributions

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