Spatiotemporal Dynamics of Agricultural Land Loss in Offa LGA: Implications for Food Security (original) (raw)

Agricultural Land-Use Change and Disappearance of Farmlands in Kaduna Metropolis-Nigeria

2014

This study assessed agricultural land-use change in Kaduna metropolis. This study combined the use of remote sensing and geographic information system (GIS) application to ascertain the rate of agricultural land-use change from 1980 to 2012 in the study area. The four imageries (Landsat MSS 1980, Landsat TM 1990, Landsat ETM+ 2005 and Nigeria Sat X 2012) used were classified and compared to understand the rate and extent of agricultural land-use change during the different periods. The findings revealed that the study area experienced a significant reduction in agricultural land and these leads to continued disappearance of farmlands. Lastly, the decrease in agricultural lands leads to loss of livelihood, reduction in food supply and increase poverty. This has raised so many concerns about the sustainability of Urban and Peri Urban Agriculture (UPA) production in the study area whereby the small scale farmers are the most affected.

Impact of Land Use Changes on Agricultural Land Use: Evidence from Jalingo Region of Taraba State, Nigeria

Journal of Geography, Environment and Earth Science International

This study examined the integration of Remote Sensing and Geographic Information System (RS/GIS) for analyzing land use in Jalingo Region, Taraba State for the period 1996 to 2016; the image of 1996, 2006 and 2016 was used. The study employed a supervised digital image classification method using Arc GIS 10.3 software and classified the land use into residential, agricultural, commercial and transport. The images were made to pass through the processes of georeferencing, image enhancement, image resampling and classification and also descriptive statistics was adopted to analyze the findings on the effect of Urbanization on agricultural land use. Data for the study was the image of Jalingo Region of 1996, 2006 and 2016; also data was collected primarily by the administration of the questionnaire, and a total of 289 well-structured questionnaires were administered. Result show there was a significant loss of agricultural land from 180.46 km2 to 135.66 km2. It also revealed an increas...

Spatial analysis of agricultural landuse change in Asaba, southern Nigeria

This paper examines agricultural landuse change because of urban encroachment into the agricultural landscape. It analyses the pattern and rate of landuse change in Asaba between 1987 and 2013, and determines the impact of the observed changes on agricultural landuse. Three time point multi-temporal remote sensing images are analysed using hybrid unsupervised/supervised image classification techniques to identify four dominant land cover classes: cultivation, settlement, forest and water. The average rate of change is also determined by computing the difference in areal extent of a land cover in the initial and final time points. The results show that cultivation and settlement increased by 1.4% and 1.5% respectively while forest and water decreased by 0.7% and 1.2% respectively in the first interval, 1987-2002. In the second interval, however, cultivation increased by 0.5% while settlement, forest and water decreased by 0.2%, 0.1% and 1% respectively. In spite of an average overall increase observed for cultivation and settlement, the results show a reduction in total area cultivated in the second interval while forest and water also declined by 0.4% and 1.1% respectively. The study concludes that urban encroachment into rural landscape should be controlled and sustainable rural development strategies to minimise rural-urban migration be implemented so as to curb the loss of interest in agriculture. Agro-business ventures should also be promoted among the youths.

Impact of Urbanization on Agricultural Land in Makurdi Local Government Area of Benue State, Nigeria

International Journal of African and Asian Studies, 2021

This study assessed the Impact of Urbanization on Agricultural Land in Makurdi Local Government Area of Benue State. The data collected were population figures and land use for three Epoch (1997, 2007 and 2017). The satellite images were sourced from the National Center for Remote Sensing and Geographic Information System, Jos. In the analysis, cross change detection analysis and overlay analysis using ArcGIS 9.0 was performed to detect where land-use change has occurred and which type of land use agricultural land has transformed too. The GIS analysis revealed that there is an increase in settlement and a decrease in Agricultural land from 1997-2017. It also revealed that 99.51ha of agricultural land use has been converted to settlement between 1997 and 2017. The results reveal that urbanization has significant effects on Agricultural Land in the study area and these effects include; decreasing agricultural land, decreasing agricultural activities and decrease in farm size. If the growth in the population of Makurdi LGA continues unchecked, agricultural land will be significantly depleted in the future. The study recommended that there should be effective law and policy to control population growth sustainably to minimize the negative impact of urbanization in the study area. Also, urban agriculture should be encouraged to sustain the food supply in urban areas.

Urbanization and its Impact on Agricultural Lands in Growing Cities in Developing Countries: A Case Study of Makurdi, Benue State Nigeria

International Journal of Economy, Energy and Environment, 2020

Land is a basic, definite and important natural resources which supplies most of man's food. However, urbanization has remains the major threats challenging the sustainability of agricultural lands in most major growing cities of the developing countries. This research work was carried out to assess the impacts of urbanization on arable land in Makurdi town. The study used Remote Sensing and GIS with satellite images to analysis, mapped and quantified the land use types and extent at which agricultural lands are lost to urbanization within the study period. The findings revealed that the land use types had changed significantly within the study period. The result also shown that, the study area has lost 200km 2 of agricultural land representing 19% of the total landmass to urbanization within the study period. Built-up has gained 336km 2 representing 32% of the total landmass of the study area within the same period. Thus, the study area has emerged from being predominantly rural area to a city with an appreciable urbanization level. The study recommended that: i. effective and proper management strategies to control urban expansion to agriculture lands by the government are taken such as integrating agricultural land use into urban land use planning. ii. Proactive measure is taken by all stakeholders in the study area towards a better understanding of the changing pattern of land use of the area.

The Impact of Urban Expansion on Agricultural Land and Crop Output in Ankpa, Kogi State, Nigeria

Urban expansion is a human induced phenomenon with inherent effects on the environment. The aim of this study was to examine agricultural land loss and its effect on crop yield in the study area. Two methods of data collection were applied in this research. The first was geospatial technology used to obtain Land use/Land cover and to check the rate of urban expansion. The land-sat image of Ankpa was acquired for three different years of 1987, 2001 and 2016 with the aid of Idrisi Andes land use change modeler and Arc GIS 9.3 used to generate the statistics to show change over the period of 29 years of study. The second data was on crop yield obtained from Kogi Agricultural Development Project. The study revealed that land use and land cover of the study area had undergone considerable changes over the period examined. Built-up areas had expanded significantly during the twenty-nine years period under review. Agricultural lands, vegetation and bare surface declined due to the growths in population and physical developments. The trend analysis of farmland from 1995 to 2016 showed a decreasing pattern. The study therefore recommended the need for government to control urban development from spreading to agriculture land as this would have serious repercussion on food production.

Assessment of Arable Land Loss Due to Urbanization Using Remote Sensing and Gis: A Study of Jos South Local Government Area of Plateau State, Nigeria

2015

Urbanization is threatening the limited arable land in Nigeria. This study assessed the arable (cultivated) land loss due to urban growth in Jos South Local Government Area from 1993-2013. The study utilized data from field surveys, remote sensed data and geographical information system technique, four main methods of data analysis were adopted in this study namely calculation of the Area in hectares of the resulting land use/land cover types for each study year and subsequently comparing the results, Markov Chain and Cellular Automata Analysis for predicting change, Overlay Operations and Maximum Likelihood Classification. The results of the study showed that built up areas in 1993 occupied the least among the total land area with about 9.45% coverage representing 4833.6 hectares,

City Expansion and Agricultural Land Loss within the Peri-Urban Area of Osun State, Nigeria

2017

Urban encroachment into arable land along the peri-urban areas of Osun State, Nigeria prompted this investigation. The study is aimed at determining rate, pattern and effects of uncontrolled spatial expansion in the city. This study examines the trend in eight (8) peri-urban communities in Olorunda and Osogbo LGAs which were purposely selected. A multi-stage sampling technique was adopted in administering 230 questionnaires on randomly selected peri-urban farmers. Primary data collected were analysed using SPSS while Geographical Information Systems (GIS) data acquisition and sources were used to capture vegetation change, with 3 Landsat imageries sourced for the study. Findings revealed that 72% of interviewed farmers had a fear of losing their farmland to developmental projects as 16.1% of farmers had previously lost between 1 and 2 acres of farmland to such projects. Land modelling change detected that settlement/built-up-areas have increased from 978.03 hectares (6.60865%) in 19...

The implication of agricultural land use change on food security in Benue state Nigeria

Journal of Tropical Agriculture 57 (2): 105-113, 2019, 2019

This study employed geo-physical Land Use Land Cover (LULC) satellite data and crop yield data to examine the trend of agricultural land-use change and how it affected food security in the Nigerian state of Benue. Satellite imageries were downloaded for the years 1980, 1990, 2000, 2010, and 2015 from the United States Geological Survey (USGS) website, while crop yield data from 1980 to 2015 were obtained from the Benue State Ministry of Agriculture. Satellite image datasets were analyzed using remote sensing and GIS techniques, and data extracted for a quantitative analysis while crop yield data and data on percentage changes in cropland/vegetation were analyzed using regression analysis. The results of the study showed that the trend of agricultural land-use change in Benue state, Nigeria is tending towards reduction in agricultural lands. While this negative trend was found to reduce the output of some crops (e.g. yam, maize and groundnut), it seemed to have also spurred an increase in the production of other crops with more economic value (e.g. rice and cassava) due to intensification. The study recommends that appropriate landuse policies should be put in place to prevent unguarded loss of agricultural lands so as to forestall looming food security crisis.

Detection and Delineation of Agricultural Land Losses in Minna, Niger State, Nigeria

Remote Sensing of Land

This study assessed the losses in agricultural lands and enrichment of other land usages in agricultural area in Minna and environs in the state capital of Niger state, Nigeria. Data captured using Landsat Multispectral Scanner (MSS) (1990), Thematic Mapper (TM) (2000-2010) and Enhanced Thematic Mapper plus (ETM+) (2000, 2010 and 2020) used to quantify LULC changes. A post-classification matrix prepared to assess the modification and conversion in LULC from 1990 to 2020. The significant modification in LULC observed as agricultural lands and vegetation underwent noticeable decline by 714.39km2 and 578.94km2, respectively whereas built up area increased substantially to a value of 96.91km2. About 12.29km2 agricultural land lost to barren land and 12.83km2 converted to water bodies. Finally, the encroachments of vegetation and built up area in agricultural area caused substantial decreased the available land for agricultural activities. Remote sensing data provide useful for estimatio...