Mineral nitrogen dynamics in compacted soil under organic amendment

Agbeshie, Alex Amerh; Logah, Vincent; Opoku, Andrews; Tuffour, Henry Oppong; Abubakari, Awudu; Quansah, Charles

doi:10.1016/j.sciaf.2020.e00488

Cited by 6 publications

(5 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Soil organic carbon is known to increase soil stability by reducing compaction (Morisada et al 2004). Apart from the variations in the clay and SOC contents accounting for the differences in soil bulk density among the land-use systems, the higher values of the arable land may also be due to soil disturbance via tillage operations from intensive farming activities (Homann et al 2004;Agbeshie et al 2020). Tillage causes soil compaction through increase in soil micro-porosity and reduction in macroporosity with adverse implications for ecosystem plant productivity.…”

Section: Discussionmentioning

confidence: 99%

Soil carbon stock and emission: estimates from three land-use systems in Ghana

2021

Self Cite

View full text Add to dashboard Cite

Background Land-use systems that sequester carbon and reduce CO2 emissions are key in the global mitigation strategies of climate change. Greenhouse gas emission from agro-ecosystems in sub-Saharan Africa is little studied. Here, we quantified soil carbon stock (SCS) and CO2 emissions from three land-use systems viz. arable land, oil palm plantation and forestland in the semi-deciduous forest zone of Ghana. Results Soil organic carbon concentration at the 0–15 cm layer in the forestland was 62 and 23% greater than that in the arable land and palm plantation, respectively. The SCS along the 1.0-m profile was 108.2, 99.0 and 73.5 Mg ha−1 in the forestland, palm plantation and arable land, respectively. Arable land emitted 30–46% more CO2 than palm plantation and forestland. In the dry season, CO2 emissions were respectively 0.93, 0.63 and 0.5 kg ha−1 h−1 from the arable land, palm plantation and forestland. Positive relationships were observed between CO2 emissions and SCS, soil temperature, and moisture. The SCS greatly influenced CO2 emission in the dry season more than in the wet season in the relatively higher carbon-input systems (forestland and palm plantation). Soil temperature accounted for more than 55% of CO2 emissions in both seasons, which has implications in the era of rising global temperatures. Conclusions The study provides relevant information on carbon storage abilities of the three land-use types in tropical climate and calls for drastic climate change actions to reduce degradation of forest cover and soil disturbance in agro-ecosystems in sub-Saharan Africa.

show abstract

Section: Discussionmentioning

confidence: 99%

Soil carbon stock and emission: estimates from three land-use systems in Ghana

2021

Self Cite

View full text Add to dashboard Cite

show abstract

“…Although the rate of soil organic carbon accrual in the grove (i.e., accumulation of 0.04% C in topsoil per annum and 0.07% per annum in subsoil up to 48 cm) was quite slow, it offers a more promising step toward achievement of the “4p1000” initiative (Rumpel et al., 2020) than the natural savanna. In as much as leaf litter quality (Georgiou et al., 2022) may influence the rate of carbon accrual over the period, higher tropical soil temperatures may play key roles in favoring faster microbial decomposition (Agbeshie et al., 2020).…”

Section: Discussionmentioning

confidence: 99%

Soil carbon, nutrient, and vegetation dynamics of an old Anogeissus grove in Mole National Park, Ghana

Logah,

Abubakari,

Issifu

et al. 2024

Biotropica

Self Cite

View full text Add to dashboard Cite

Formation of forest islands in West Africa has been linked to anthropogenic soil improvement resulting in luxuriant tree growth in otherwise open savanna landscapes. However, there is limited understanding of how such unique ecosystems modulate soil carbon (C) dynamics and nutrient cycling. In this study, we report soil nutrient characteristics and two distinct soil organic carbon pools of Anogeissus grove (forest island) associated with abandoned village sites of the Mole National Park in the Guinea savanna or tropical continental climatic zone of Ghana, taking opportunity of a previously published study in Biotropica in 1978. We compared present‐day differences in soil characteristics between the previously studied forest grove and adjoining open savanna in the Park and evaluated vegetation dynamics since first measurement in 1974. Overall, we see changes related to self‐thinning and expansion of the grove on a decadal timescale. Soil organic matter and available phosphorus contents were greater in the grove and increased by 19.6% and 18.7%, respectively over time, showing persistence after four decades. Mineral‐associated organic carbon (MAOC) differed significantly (p < .05) between the vegetation types, being 3.44% in the grove and 2.34% in the savanna. The grove was ca. 25% greater in particulate organic carbon (POC) content than the savanna. In both vegetation types, >55% of carbon was stabilized in the mineral fraction. Our study demonstrates long‐term human impacts on soil and vegetation and offers a clear nature‐based solution for climate change mitigation through sustainable land management by indigenous people toward achievement of the “4p1000” initiative.

show abstract

“…) in the soil through mineralization and nitrifcation processes, as shown by studies by Calvo et al, Verma and Jayakumar [61][62][63]. Although some nitrogen may be lost through volatilization during forest fres, the remaining nitrogen can be mineralized to NH 4 + -N and further nitrifed to NO 3 − -N under suitable conditions, as observed by study by Agbeshie et al [54]. As a result, there is often an increase in the amount of available nitrogen following a forest fre.…”

mentioning

confidence: 82%

“…Nitrogen (N) is often the most limiting nutrient in forests [54]. Te average total nitrogen content in soil was found to be higher (0.1%) in the freafected area than the fre-unafected area (0.09%), while the range was found to be 0.08 to 0.12% and 0.07 to 0.14%, respectively (Figure 2(c)).…”

Section: Total Nitrogen (Tn)mentioning

confidence: 96%

Low-Intensity Wildfire Alters Selected Soil Properties in the Tropical Shorea robusta Forest

Dhungana,

Thapa Chhetri,

Baniya

et al. 2024

International Journal of Forestry Research

View full text Add to dashboard Cite

Wildfires may impact specific soil properties differently, including positive, negative, or neutral effects. However, due to the absence of uniformity in comprehending how wildfires influence soil nutrients, this research endeavors to scrutinize the particular effect of wildfire on selected soil properties in the tropical Shorea robusta forest. We analyzed 42 soil samples obtained from the topsoil of 0–10 cm comprising 21 samples from the fire-affected area and 21 from the fire-unaffected area. The physicochemical parameters of the soil including soil pH, soil organic carbon (SOC), total nitrogen (TN), available phosphorus, and available potassium were examined and compared in two sites. The impact of fire was statistically tested after comparing each variable between the two sites. Using the Mann–Whitney U test and the Pearson correlation coefficient, we analyzed the data. The results indicated that the average chemical parameters of the soil except for pH in the fire-affected area (pH = 5.43, SOC = 1.6%, TN = 0.1%, and P=246.85 kg·ha−1) were greater than those in the fire-unaffected area (pH = 5.71, SOC = 1.21%, TN = 0.09%, and P=174.21 kg·ha−1). There were statistically significant differences in the soil parameters, including pH, SOC, TN, and P, but not with K. The soil pH was reduced in the fire-affected area, with a significant positive correlation with SOC, TN, and K. Overall, the low-intensity wildfire facilitated the proliferation of soil chemical properties in the tropical S. robusta forest. Hence, low-intensity wildfire could be a suitable forest management strategy to alter soil nutrient status. Additionally, these findings can aid in enhancing forest fire management strategies for effectively managing the tropical S. robusta forest.

show abstract

Mineral nitrogen dynamics in compacted soil under organic amendment

Cited by 6 publications

References 26 publications

Soil carbon stock and emission: estimates from three land-use systems in Ghana

Soil carbon stock and emission: estimates from three land-use systems in Ghana

Soil carbon, nutrient, and vegetation dynamics of an old Anogeissus grove in Mole National Park, Ghana

Low-Intensity Wildfire Alters Selected Soil Properties in the Tropical Shorea robusta Forest

Contact Info

Product

Resources

About