Geospatial assessment of wetland soils for rice production in Ajibode using geospatial techniques

Abstract

Wetlands played an important role in human development and nature nutrient store for rice cultivation. Spatial techniques have gained importance in monitoring wetland changes. The study aimed to assess wetland soils for rice production using spatial techniques. The area was sample using stratified grid sampling. Nutrient availability and rice suitability were assessed in ArcGIS 10.6 environment. The soil was characterized into Eutric fluvaquent (Soil Survey Staff, 2010) and correlated as fluvisols in the World Reference Base system. The results of the land cover changes showed that built-up, waterbody, and farmland have increased by 39, 18, and 29%, respectively, and 13% decrease was observed in vegetation. The study concluded that soils of the studied area varied from marginally (75%), not suitable (20%), and permanently not suitable (5%) for rice production. Therefore, without proper assessment and management of these studied soils, rice production will continue to be futile.

Analyzing Wetland Dynamics Using Geospatial Techniques: A Case of Abay Choman and Jimma Geneti Watershed, Horo Guduru Wollega Zone, Western Ethiopia

“…Geographic Information Systems (GIS) and remote sensing satellites have become the most powerful tools for assessing and monitoring of natural resources and the environment (Das et al, 2022; Garg, 2015; Najar et al, 2017). Substantial studies highlight that GIS and remote sensing techniques are widely used to survey wetland change very quickly, at low cost, and with greater accuracy (Brooks et al, 2004; Haque & Basak, 2017; Liu et al, 2006; Mabwoga & Thukral, 2014; Schmidt & Skidmore, 2003; Tobore et al, 2021). GIS and remote sensing techniques are more accurate than field observations and other techniques for measuring the rate of change of LULC over time.…”

Assessment of Heavy Metal Contamination in Wetlands Soils Around an Industrial Area Using Combined GIS-Based Pollution Indices and Remote Sensing Techniques

“…R. Orimoloye et al (2018) posited that spectral-based indices (such as EVI, NDVI and MNDWI) dominated with value of −1, can be successfully utilized to delineate areas that are prone or susceptible to anthropogenic activities. This was equally the views of Tobore et al (2021) and Polykretis et al (2020). Furthermore, Dogan (2009), opined that EVI, NDVI, MNDWI, remains the indirect method applied to study the rate of human activities.…”

“…Although, the metals concentration recorded in the studied area could be attributed to uncontrolled human activities and high population density (El Khalil et al, 2008). Also, Tobore et al (2021) and Chang et al (2014) opined that the problem of heavy metal contamination in wetlands are of great concern particularly in developing countries like Nigeria, where wetlands are used as discharge of household and industrial waste materials.…”

“…Wetlands soils are sensitive to natural as well as anthropogenic activities, due to the ever increasing human populations (Tobore et al, 2021). In this study, geopedological information (geology, and soil types), geomorphology data (such as elevation, aspect, and distance to contour line were utilized to support movement of soil deposition pathway in the area, while anthropogenic information (proximity to roads, and rivers) were applied as environmental covariates to support the assessment of the heavy metals contamination (Figure 2).…”

“…Li et al, 2022), especially, wetlands (Adeniyi & Owoade, 2010). Wetland soils, characterized by water-logging, poor-oxygen conditions and uncontrolled sewage waste, generally function as a pool or reservoir of many heavy metals, especially, regions where Earth's surface is deteriorating because of uncontrolled human activities (Tobore et al, 2021). Unfortunately, anthropogenic-induced activities, like open sawdust incineration, inappropriate concentration of industrialization and urbanization expansion, remain a common practice in Nigeria (Nkwunonwo et al, 2020;A.…”