Urbanization and its effects on land and water resources in Ijebuland, southwestern Nigeria

Onanuga, Margaret Yejide; Eludoyin, Adebayo Oluwole; Ofoezie, Ifeanyi Emmanuel

doi:10.1007/s10668-021-01458-1

Cited by 22 publications

(16 citation statements)

References 57 publications

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“…Moreover, the regression results of the impact of technological innovation, import and export trade, and foreign capital on water pollution intensity are similar to those reported Yu and Fang et al on the impact factors of environmental pollution [19,30]. The regression results of the impact of urbanization level on water pollution intensity are similar to those reported by Darko et al, Kan et al and Margaret et al on the relationship between urbanization and ecological environment, who found that the effects of urbanization, such as population upsurge, increased industrialization, urban agriculture, and rural-urban migration of persons, exert pressure on the limited water resources in most cities; the urbanization process not only intensifies the emission of water environmental pollution but also improves the water pollution intensity [60][61][62], although these results are inconsistent with the those reported by Al-Mulali et al, Irfan and Shawon, and Kan et al on the relationship between urbanization and ecological environment, who reported an inverted U curve between urbanization level and the overall quality of the water ecological environment [63][64][65].…”

Section: Estimation Resultssupporting

confidence: 86%

Has China’s Pilot Policy of Water Ecological Civilization City Construction Reduced Water Pollution Intensity?

Lyu

Kan²,

Yao³

et al. 2022

Land

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To address the deterioration of the water ecological environment, China’s Ministry of Water Resources launched 105 pilot projects for the construction of water ecological civilized cities in two batches in 2013 and 2014. Based on panel data of 283 cities in China from 2008 to 2020, in this study, we investigate the impact of the pilot policy of water ecological civilization city construction on water pollution intensity using the difference-in-differences method. We found that water pollution intensity in the sample period exhibited a downward trend, decreasing most rapidly during the pilot construction period. Controlling for urbanization level, technological innovation, import and export trade, and foreign investment, our study results show that the pilot policy significantly reduced water pollution intensity. Mechanism analysis shows that the reduction effect was achieved through the channels of optimizing industrial structure, increasing sewage treatment, promoting water recycling, promoting technological progress, and speeding up water price reform. The results of this study also show that the policy effect in terms of reducing water pollution intensity is heterogenous across time, in addition to exhibiting regional heterogeneity owing to differences in levels of economic development, water resource endowment, and environmental regulation intensity. The research results also provide a reference for other countries similar to China to reduce water pollution intensity, address the deterioration of the water ecological environment, and improve the water ecological environment in the process of economic development.

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Section: Estimation Resultssupporting

confidence: 86%

Has China’s Pilot Policy of Water Ecological Civilization City Construction Reduced Water Pollution Intensity?

Lyu

Kan²,

Yao³

et al. 2022

Land

View full text Add to dashboard Cite

show abstract

“…There is an inverted U curve between urbanization level and the level of water ecological civilization. Darko et al, Kan et al, and Margaret et al believe that the effects of urbanization, such as population upsurge, increased industrialization, urban agriculture, and rural-urban migration of persons exert pressure on the limited water resources in most cities; the urbanization process has a negative impact on the overall quality of the water ecological environment, which not only intensifies the emission of water environmental pollution, but also inhibits the water environmental absorption capacity [44][45][46]. The regression results are similar to those of Al-Mulali et al and Irfan and Shaw on the relationship between new-type urbanization and ecological environment in 93 countries and South Asian countries, respectively [47,48], but they are inconsistent with the results of Li on the relationship between new-type urbanization and ecological environment; he found an anti-N-shaped relationship between urbanization and ecological environment in China [49].…”

Section: Discussionmentioning

confidence: 99%

Temporal and Spatial Difference Analysis and Impact Factors of Water Ecological Civilization Level: Evidence from Jiangxi Province, China

Kan

Yao

Lyu

et al. 2022

Land

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The water environment quality is not high, the spatial and temporal distribution of water resources is uneven, and the water quality-induced water is in shortage in the world. Strengthening the construction of water ecological civilization is one of the important measures to solve these problems. We took China’s Jiangxi Province and its prefecture-level cities as the research object, the water ecological civilization level was measured from the two dimensions of time and space by principal component analysis, and based on the panel data of prefecture-level cities from 2011 to 2020, the panel data model was used to empirically analyze the impact factors of water ecological civilization. The results show that: (1) The level of water ecological civilization in Jiangxi Province shows a fluctuating upward trend, in which the level of water ecological civilization first increased, then decreased, and then increased from 2013 to 2020. (2) Water ecology is the key to affecting water ecological civilization, and cities with abundant natural endowments of water resources have higher scores for water ecological civilization. (3) There are significant differences in the level of water ecological civilization in different cities in Jiangxi Province; the level of water ecological civilization in southern Jiangxi and central Jiangxi is generally higher than that in northern Jiangxi; among the 11 prefecture level cities, Ji’an, Fuzhou, Jiujiang, Yichun, Ganzhou, and Shangrao have a high level of water ecological civilization. (4) Industrial structure, educational investment, and government governance level have significantly improved the level of water ecological civilization. Environmental pollution is not conducive to improving the level of water ecological civilization. There is an inverted U curve between the level of urbanization and the level of water ecological civilization. Accordingly, all prefecture-level cities in Jiangxi Province need to implement new development concepts and innovation-driven strategy, make up for shortcomings, and strengthen weak points according to their own natural endowments of water resources, such as optimizing the industrial structure, increasing investment in education, improving the level of government governance, and strengthening the connotation construction of urbanization, so as to promote the construction of water ecological civilization in Jiangxi Province. The research results also provide a reference for other countries similar to Jiangxi Province to solve the problem of water pollution, alleviate the pollution-induced water shortage, and improve the water ecological environment in the process of economic development.

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“…Like other parts of Nigeria, Ijebu Ode is characterized by wet and dry seasons. The annual rainfall is between 1575mm and 2340mm and the average annual temperature is 27.5°C (Oluwatobi & Oluwakemi, 2016;Fayemi, 2020;Onanuga et al, 2022). The vegetation is tropical rain forest dotted in some parts by derived forest being altered by human activities (Ezekiela et al, 2016;Adejuwon & Agundiminegha, 2019).…”

Section: The Study Areamentioning

confidence: 99%

“…Land use and land cover change (LULCC) is a continuous process which has both spatiotemporal connotations with great environmental implications. As a result, it becomes imperative to study the nature of changes in land use and land cover patterns across time and space (Onanuga et al, 2022). However, in modern times, most of the conventional approaches for analyzing and evaluating spatial data appear rather inadequate for complex multi-factorial ecological studies.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Land Cover Dynamics and Landscape Fragmentation in Ijebu Ode, Nigeria

Olayiwola

Salau

2022

jgier

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Landscape fragmentation has been found to be a major consequence of urbanization and of land use/cover (LULC) changes. Thus, this study analyzed the spatiotemporal land use/land cover changes of Ijebu Ode, Nigeria between 1986 and 2021. This is with a view to assessing the pattern of landscape fragmentation in the study area. The study used data obtained through Global Positioning System (GPS) receiver and satellite imageries (Landsat 5 MSS/TM, 1986; Landsat 7 ETM+, 2000 and 2014; and Landsat 8 OLI/TIR, 2021). Data were analyzed using spatial landscape metrics. Results indicated that Ijebu Ode has witnessed dramatic increase of built-up areas between 1986 and 2000 by 11.03%, 2000 to 2014 (65.24%), and 2014 to 2021 by 131.25%. Expansion of the built-up area was aided by reductions in bare land (1986 to 2000, 15.78%; 2014 to 2021, 98.27%), and the cultivated area by 47.74% between 1986 and 2014. Landscape metrics were estimated over the four epochs of study. Results revealed that most of the metrics suggest similar trends over the entire periods of study. However, Largest Patch Index (LPI), Landscape Shape Index (LSI) and Normalized Landscape Shape Index (NLSI) were useful in capturing the spatio-temporal variations in landscape transformation. Also, Class Area (CA) was useful to show the degree of land cover changes. The study concluded that location of spatial structures influenced the landscape patterns influence and urbanization processes in the study area. Hence, the study recommended for regular monitoring of the expansion of the built-up area to check the imminent urban sprawl in the study area.

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Urbanization and its effects on land and water resources in Ijebuland, southwestern Nigeria

Cited by 22 publications

References 57 publications

Has China’s Pilot Policy of Water Ecological Civilization City Construction Reduced Water Pollution Intensity?

Has China’s Pilot Policy of Water Ecological Civilization City Construction Reduced Water Pollution Intensity?

Temporal and Spatial Difference Analysis and Impact Factors of Water Ecological Civilization Level: Evidence from Jiangxi Province, China

Evaluation of Land Cover Dynamics and Landscape Fragmentation in Ijebu Ode, Nigeria

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