scholarly journals Assessment of Soil Quality under Different Agricultural Land Use Systems: A Case Study of the Ibadan Farm Settlement

2020 ◽  
pp. 89-104
Author(s):  
B. O. Adebo ◽  
A. O. Aweto ◽  
K. Ogedengbe
Keyword(s):  
Land Use ◽  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Soil Quality ◽  
Management Practices ◽  
Agricultural Land ◽  
Agricultural Land Use ◽  
Land Uses ◽  
Native Land ◽  
Land Use Systems

Soil quality in an agroecosytem is considerably influenced by land use and management practices. Twenty two potential soil quality indicators were used to assess the effects of five different land use types (arable land, plantation, agroforestry, marginal land and native forest) on soil quality in Akufo and Atan farm settlements in Ibadan, southwestern Nigeria. A total of sixty-two fields were selected from which soil samples were taken at a depth of 0-15 cm and subjected to laboratory analysis. Majority of the evaluated physicochemical properties varied significantly among the land uses and whereas native land performed relatively better for most of the observed attributes, arable and marginal lands performed worse. Due to the moderate to strong significant correlation among the potential indicators, they were subjected to principal component analysis and only seven indicators were selected to compute the soil quality index (SQI). In both Akufo and Atan, native land had the highest SQI (0.8250 and 0.860 respectively) which was significantly different (P = .05) from all the agricultural land uses, except plantation (0.739 and 0.750 respectively). Whereas marginal field in Atan was most degraded (SQI = 0.455), it was closely followed by arable fields in both locations. This study indicates that the current agricultural land use and soil management practices in Akufo and Atan farm settlements have negatively impacted soil quality; however, the degree of degradation was strongly influenced by the concentration of soil organic carbon in the understudied land use systems. It also emphasizes the need to promote the use of sustainable management practices among agricultural land users, so as to increase soil organic carbon stock, and improve soil quality and land productivity.

scholarly journals Land Cover and Land Use Change-Driven Dynamics of Soil Organic Carbon in North-East Slovakian Croplands and Grasslands Between 1970 and 2013

2020 ◽  
Vol 39 (2) ◽  
pp. 159-173
Author(s):  
Rastislav Skalský ◽  
Štefan Koco ◽  
Gabriela Barančíková ◽  
Zuzana Tarasovičová ◽  
Ján Halas ◽  
...  
Keyword(s):  
Land Use ◽  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Land Cover ◽  
Spatial Data ◽  
Management Practices ◽  
Agricultural Land ◽  
Temporal Dynamics ◽  
North East ◽  
Soc Stock

AbstractSoil organic carbon (SOC) in agricultural land forms part of the global terrestrial carbon cycle and it affects atmospheric carbon dioxide balance. SOC is sensitive to local agricultural management practices that sum up into regional SOC storage dynamics. Understanding regional carbon emission and sequestration trends is, therefore, important in formulating and implementing climate change adaptation and mitigation policies. In this study, the estimation of SOC stock and regional storage dynamics in the Ondavská Vrchovina region (North-Eastern Slovakia) cropland and grassland topsoil between 1970 and 2013 was performed with the RothC model and gridded spatial data on weather, initial SOC stock and historical land cover and land use changes. Initial SOC stock in the 0.3-m topsoil layer was estimated at 38.4 t ha−1 in 1970. The 2013 simulated value was 49.2 t ha−1, and the 1993–2013 simulated SOC stock values were within the measured data range. The total SOC storage in the study area, cropland and grassland areas, was 4.21 Mt in 1970 and 5.16 Mt in 2013, and this 0.95 Mt net SOC gain was attributed to inter-conversions of cropland and grassland areas between 1970 and 2013, which caused different organic carbon inputs to the soil during the simulation period with a strong effect on SOC stock temporal dynamics.

scholarly journals Soil Quality and Its Potential Indicators under Different Land Use Systems in the Shivaliks of Indian Punjab

2020 ◽  
Vol 12 (8) ◽  
pp. 3490
Author(s):  
Bharat Bhushan Vashisht ◽  
Bijesh Maharjan ◽  
Sandeep Sharma ◽  
Samanpreet Kaur
Keyword(s):  
Land Use ◽  
Soil Quality ◽  
Agricultural Land ◽  
Mixed Forest ◽  
Weighted Average ◽  
Principal Component ◽  
Soil Parameters ◽  
Land Uses ◽  
Soil Quality Index ◽  
Land Use Systems

The present study assessed the overall state of the soil based on the most sensitive soil attributes under different land uses—i.e., rainfed agriculture, mixed forest, afforestation and non-arable lands—in the lower Shivaliks of Indian Punjab. The soil parameters—i.e., erosion ratio, bulk density and water retention characteristics—and fertility parameters were integrated under different land uses to identify potential soil quality indicators.The overall state of the soil, based on a weighted average of primary soil functions under different land uses through fuzzy modeling, was deemed best for agricultural land use (0.515), followed by forests (0.465) and non-arable lands (0.456), and deemed worst under afforestation (0.428). Among the different land use systems, principal component analysis (PCA) clearly separated the agriculture and forest samples from afforestation and non-arable lands samples. The contribution of potential indicators such as erosion ratio (ER), phosphorus (P) and potassium (K) toward the soil quality index (SQI) was substantial. The order of contribution of the selected indicators to the SQI was 53.5%, 34.3% and 19.9% for ER, P and K, respectively. These indicators are most influential for studying real time soil health and ecological processes in the future, under various land use systems in degraded agroecosystems like the Shivaliks.

Impact of Farm Management Practices and Agricultural Land Use on Soil Organic Carbon Storage Potential in the Savannah Ecological Zone of Northern Ghana

2014 ◽  
Vol 9 (4) ◽  
pp. 484-500 ◽  
Author(s):  
John Boakye-Danquah ◽  
◽  
Effah Kwabena Antwi ◽  
Osamu Saito ◽  
Mark Kofi Abekoe ◽  
...  
Keyword(s):  
Land Use ◽  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Carbon Storage ◽  
Management Practices ◽  
Agricultural Land ◽  
Farm Management ◽  
Northern Ghana ◽  
Storage Potential ◽  
Landscape Level

In recent times, there has been increasing interest in the importance of agricultural soils as global carbon sinks, and the opportunity of enhancing the resilience of degraded agroecosystems – particularly in savannah regions of the world. However, this opportunity is largely a function of land use and/or land management choices, which differ between and within regions. In the present study, we investigated the role of agriculture land use and farm management practices on soil organic carbon (SOC) storage in the savannah regions of northern Ghana. We evaluated selected land use types by using an integrated approach, involving on-farm interviews, community transect walks, land use monitoring, and soil sampling. Our results indicated that, at the landscape level, community land use and resource needs are important determinants of SOC storage in farmlands. We determined low SOC accumulation across the investigated landscape; however, the relatively high SOC stock in protected lands compared with croplands implies the potential for increasing SOC build-up by using recommended management practices. Low incomes, constraints to fertilizer use, low biomass availability, and reductions in fallow periods remain as barriers to SOC buildup. In this context, global soil carbon storage potential and smallholder food production systems will benefit from an ecosystembased adaptation strategy that prioritizes building a portfolio of carbon stores at the landscape level.

scholarly journals Lateral transport of SOC induced by water erosion in a Spanish agroecosystem

2020 ◽  
Author(s):  
Leticia Gaspar ◽  
Lionel Mabit ◽  
Ivan Lizaga ◽  
Ana Navas
Keyword(s):  
Land Use ◽  
Soil Erosion ◽  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Management Practices ◽  
Water Erosion ◽  
Land Uses ◽  
Lateral Movement ◽  
Erosion Processes ◽  
Depositional Processes

<p>The main route for the lateral movement of soil organic carbon (SOC) is water erosion. Awareness of the distribution and magnitude of land carbon mobilization is important both for improving models of the carbon cycle and for management practices aimed to preserve carbon stocks and enhance carbon sinks. There is a need to consider the global significance of soil erosion from soil organic carbon cycling schemes and for this reason, the movement of SOC during erosion processes should be elucidated.</p><p>Our study aims to estimate the SOC redistribution induced by water erosion during a 40 years period in an agroforestry mountain ecosystem located in northern Spain. To this purpose, topographically driven transects were selected with mixed land uses to i) assess what factors modify the runoff patterns with impact on soil and carbon redistribution and ii) evaluate the mobilization of topsoil organic carbon along the transects.</p><p>The lateral movement of SOC shows similar spatial patterns with that of soil erosion. To identify whether erosional or depositional processes have been predominant in the sampling sites we used <sup>137</sup>Cs inventories and the characterization of terrain attributes of the study with a detailed analysis of the main runoff pathways. Results indicate that SOC losses were related to an increase in water flow accumulation, while the highest SOC gains were recorded at concave positions. Soil erosion processes and the content of SOC in soils are the two main factors controlling carbon budgets. The topographical and geomorphological characteristics of the transects, the spatial distribution of land uses and the presence of landscape linear elements such as terraces or paths, affect runoff and determine the sediment connectivity and carbon dynamics along the slopes.</p><p>The interactions between topography and land use produce significant positive or negative effects on SOC accumulation, particularly in areas with complex topography, as the results obtained in our study sustain. Even though the effect of topography and land use/land cover and their interactions on the horizontal distributions of carbon remains largely unknown, our approach contributes to better understand the pattern of gains and losses of soil organic and inorganic carbon induced by water erosion.</p>

scholarly journals Soil Organic Carbon and Nitrogen Stocks Following Land Use Changes in a Sub-Humid Climate

2018 ◽  
Vol 8 (1) ◽  
pp. 70
Author(s):  
Birhanu Biazin ◽  
Dong-Gill Kim ◽  
Tefera Mengistu
Keyword(s):  
Land Use ◽  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Agricultural Land ◽  
Soil Depth ◽  
Natural Forest ◽  
Agricultural Land Use ◽  
Natural Forests ◽  
Land Use Types ◽  
Agro Forestry

There has been an incessant conversion of natural forests to agricultural land uses such as farmlands, grasslands and parkland agro-forestry in Africa during the last century. This study investigated changes in soil organic carbon (SOC) and total nitrogen (TN) stocks following the conversion of a natural forest to coffee-based agro-forestry, grazing grassland and well-managed maize farm in a sub-humid tropical climate of Ethiopia. Soil samples (up to 1m depth) were taken from each of these four land use types. Taking the natural forest as a baseline and with duration of 35 years since land use conversion, the total SOC and TN stocks were not significantly different (P > 0.05) among the different land use types when the entire 1m soil depth was considered. However, in the upper 0-10cm soil depth, the SOC and TN stocks were significantly higher (P < 0.05) in the natural forest than the agricultural land use types. There were different patterns of SOC and TN distributions along the soil depths for the different land use types. The SOC stocks decreased with depth in natural forest, but did not show any increasing or decreasing trends in maize farm, grazing grassland, and coffee-based agroforestry. The results of this study revealed that the negative effects of converting natural forests to agricultural land use types on SOC and TN can be prevented through appropriate land management practices in cultivated and grazing lands and use of proper agroforestry practices in a sub-humid tropical climate.

scholarly journals Effects of Sustainable Soil Management Practices on Distribution of Soil Organic Carbon in Upland Agricultural Soils of Mid-hills of Nepal

2013 ◽  
Vol 13 (1) ◽  
pp. 133-141 ◽  
Author(s):  
Nagmindra Dahal ◽  
Roshan M Bajracharya
Keyword(s):  
Land Use ◽  
Carbon Sequestration ◽  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Management Practices ◽  
Agricultural Land ◽  
Soil Management ◽  
Sustainable Soil Management ◽  
Sequestration Potential ◽  
Soc Stocks

An abundance of soil organic carbon (SOC) generally enhances the quality of lands for agriculture or forestry. Concentration of SOC varies in accordance to the type of land use, the inputs to the soil, and natural factors including climate and vegetation. SOC is vital for sustaining agricultural productivity which chiefly depends on both the inherent soil type and crop management practices affecting depletion or replenishment of organic matter over the years. Assessment of SOC concentration is a characteristic measurement of evaluating soil quality and the carbon sequestration potential of agricultural land. This study aims to assess SOC distribution on selected farmlands of Nepal’s mid-hills, where farmers have adopted sustainable soil management practices in non-irrigable hill terraces (“Bari” land) in comparison with those of surrounding Bari and forests where no such interventions are made. Thus the present study estimated SOC content of three types of land use – farmland with sustainable soil management practices (SSMP), farmland without sustainable management practices (Non-SSMP) and the community managed forest in four mountain districts of Nepal, namely Baglung, Dhading, Kavre and Okhaldhunga. This study found the average SOC stocks in the SSMP land in the range of 20 - 44 Mgha-1,those in non-SSMP agricultural areas 15 to 48 Mgha-1, and in the forested land 16 to 23 Mgha-1. In general, the abundance of SOC stocks are in the order of SSM>Non-SSM>Forests. The analysis indicates the high potential for carbon sequestration in hill agriculture lands through sustainable soil management. Nepal Journal of Science and Technology Vol. 13, No. 1 (2012) 133-141 DOI: http://dx.doi.org/10.3126/njst.v13i1.7452

scholarly journals Impact of agricultural land use on soil organic carbon sequestration at sub-catchment scale

2020 ◽  
Vol 31 (1) ◽  
pp. 13 ◽  
Author(s):  
D. D. A. E. Hemamali ◽  
U. W. A. Vitharana ◽  
B. L. W. K. Balasooriya ◽  
C. P. Attanayake ◽  
W. S. Dandeniya ◽  
...  
Keyword(s):  
Land Use ◽  
Carbon Sequestration ◽  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Agricultural Land ◽  
Agricultural Land Use ◽  
Catchment Scale ◽  
Soil Organic Carbon Sequestration ◽  
Organic Carbon Sequestration
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