scholarly journals Mining Impact on Livelihoods of Farmers of Asutifi North District, Ghana

2021 ◽  
Vol 10 (4) ◽  
pp. 29
Author(s):  
Felix Agariga ◽  
Simon Abugre ◽  
Ebenezer K. Siabi ◽  
Mark Appiah

Local communities in Ghana are heavily reliant on agriculture for their livelihoods. However, they are increasingly shifting from engaging in agriculture to mining. This study was undertaken to assess the impact of mining (both small and large scale) on the livelihoods of community members of Kenyasi, Asutifi North District in Ghana. Data were collected from 201 farming households who were selected randomly and interviewed for a variety of information. The questionnaire responses received from the respondents were classified into items and each item's responses were tallied. The results of the studies show that the farmers’ livelihood systems were affected by the mining operations occurring around their communities. Water pollution, displacement of farmers from their lands, degradation of agricultural lands, and an increase in social vices and higher dropout rates of students from schools are some of the reported consequences of the mining activities. The pollution of the water resources poses a serious threat to the health and livelihood systems of these farmers as they depend on the water resources for agriculture and domestic use. In this study, we project that there could be increased grievances over scarce land resource and food insecurity that could lead to conflicts in the mining areas. The lack of land resources could have a tremendous effect on the social, economic, and political climate of a country and must be considered and addressed as some of the most immediate threats to Ghana's national security.

2018 ◽  
Vol 1 (3) ◽  
pp. 156-165 ◽  
Author(s):  
Nasirudeen Abdul Fatawu

Recent floods in Ghana are largely blamed on mining activities. Not only are lives lost through these floods, farms andproperties are destroyed as a result. Water resources are diverted, polluted and impounded upon by both large-scale minersand small-scale miners. Although these activities are largely blamed on behavioural attitudes that need to be changed, thereare legal dimensions that should be addressed as well. Coincidentally, a great proportion of the water resources of Ghana arewithin these mining areas thus the continual pollution of these surface water sources is a serious threat to the environmentand the development of the country as a whole. The environmental laws need to be oriented properly with adequate sanctionsto tackle the impacts mining has on water resources. The Environmental Impact Assessment (EIA) procedure needs to bestreamlined and undertaken by the Environmental Protection Agency (EPA) and not the company itself.


2013 ◽  
Vol 24 (1) ◽  
pp. 49-100 ◽  
Author(s):  
Caecilia J. van Peski

Over the summer month of August 2008, Georgia launched a large-scale military offensive against South Ossetia in an attempt of reconquering the territory. Four years later, on October 1, 2012, Georgia is holding its first Parliamentary Elections after the conflict that caused so much harm. The Parliamentary Elections constitute the 7th legislative elections held since Georgia’s independence from the Soviet Union in 1991. It is however the first time for Georgia to elect an alternative party from the ruling party solely based on principle of democratic vote. The article examines the almost ten years of President Saakashvili’s Administration. During this decade, Saakashvili’s United National Movement government realized many positive works. Works like the successful reform of police forces and the determined force-back of corruption. These liberating works were all eagerly welcomed by Europe and other western nations. However, in the apparent loss of sense of reality towards the end of its reign, Georgia’s United National Movement government turned to dictating and ordering as a main style of governing. This in turn pushed citizens away from Saakashvili’s politics into voting for the opposition. Unforeseen by even the most experienced Southern Caucasus and Georgia experts, Georgia’s 2012 Parliamentary Elections gave way to the opposition coalition Georgian Dream to sweep to victory, leaving President Saakashvili to ceded defeat. Despite President Saakashvili’s statement that he would go into opposition there has not been a complete paradigm shift in Georgia’s domestic politics. With the Georgian Dream’s failure to gain a constitutional majority and questions over the ideological compatibility of the coalition – along with the fact that United National Movement still has the greatest representation in Parliament relative to the other parties, Saakashvili and his supporters keep hold to substantial political leverage. Also, Saakashvili will remain President until the October 2013 election. His opponent, Prime Minister Ivanishvili is expected to manifest himself, bringing in a less contentious, more pragmatic approach to relations with the country’s giant neighbour to the north. Overall, it can be said that Georgia’s unrivalled ballot-box transfer of power elevated the country to a category fundamentally higher in terms of democratic development than virtually all other post-Soviet states. This has been the more remarkable even since Georgia had been widely cited as an example case of a failed state, with a destroyed infrastructure and economy, dysfunctional state institutions and something approaching anarchy as its governance model. The impact of the ongoing reform of Georgia’s constitution and electoral law has lead to major shifts in Georgia’s political landscape. However, opinions vary as to whether the farsighted amendments made to the Georgian constitution on the initiative of the United National Movement are a genuine attempt to improve the country’s system of governance or that they rather are an effort by the incumbent president to cling on to power. The adoption of the amendments and the timing of their entry into force strongly suggest that the latter might be the case. Meanwhile, as a result of the changes to the Georgian constitution, a system of dual power has come in place. These and other factors suggest that Georgia’s political landscape is set to become more predictable. The article examines the degree to which this can be held true. In the streets of Tbilisi, hundred days into the reign of the new government, there is an air of optimism amongst the people. This holds especially true when it comes to youth. The hope is that the Georgian Dream becomes a Georgian reality. The disappointment otherwise might be shattering. In spring 2013, the new leadership offers new opportunities for Georgia. It can improve its democratic system and economic growth and establish a dialogue with Russia and the breakaway districts of Abkhazia and South Ossetia. This would alleviate the frozen conflict and tense security dilemma’ on the Administrative Boundary Lines. Yet, if the transition of power does not go well, there will be prolonged power struggles that could cripple the policy making and cast Georgia back to pre-Saakashvili times. The article addresses the overall question whether the smooth transfer of power Georgia achieved after October’s election sets a standard for democracy in the region depending on whether the new government can strengthen the independence and accountability of state institutions in what remains a fragile, even potentially explosive political climate. The victory of the Georgian Dream Coalition over the United National Movement has brought pluralism into Georgian policymaking. However this political pluralism also includes that awkward dual powers; Georgia’s good cop and bad cop.


Energies ◽  
2020 ◽  
Vol 13 (11) ◽  
pp. 2818
Author(s):  
Yujun Xu ◽  
Liqiang Ma ◽  
Yihe Yu

To better protect the ecological environment during large scale underground coal mining operations in the northwest of China, the authors have proposed a water-conservation coal mining (WCCM) method. This case study demonstrated the successful application of WCCM in the Yu-Shen mining area. Firstly, by using the analytic hierarchy process (AHP), the influencing factors of WCCM were identified and the identification model with a multilevel structure was developed, to determine the weight of each influencing factor. Based on this, the five maps: overburden thickness contour, stratigraphic structure map, water-rich zoning map of aquifers, aquiclude thickness contour and coal seam thickness contour, were analyzed and determined. This formed the basis for studying WCCM in the mining area. Using the geological conditions of the Yu-Shen mining area, the features of caved zone, water conductive fractured zone (WCFZ) and protective zone were studied. The equations for calculating the height of the “three zones” were proposed. Considering the hydrogeological condition of Yu-Shen mining area, the criteria were put forward to evaluate the impact of coal mining on groundwater, which were then used to determine the distribution of different impact levels. Using strata control theory, the mechanism and applicability of WCCM methods, including height-restricted mining, (partial) backfill mining and narrow strip mining, together with the applicable zone of these methods, were analyzed and identified. Under the guidance of “two zoning” (zoning based on coal mining’s impact level on groundwater and zoning based on applicability of WCCM methods), the WCCM practice was carried out in Yu-Shen mining area. The research findings will provide theoretical and practical instruction for the WCCM in the northwest mining area of China, which is important to reduce the impact of mining on surface and groundwater.


Water ◽  
2020 ◽  
Vol 12 (6) ◽  
pp. 1762 ◽  
Author(s):  
Nathan Rickards ◽  
Thomas Thomas ◽  
Alexandra Kaelin ◽  
Helen Houghton-Carr ◽  
Sharad K. Jain ◽  
...  

The Narmada river basin is a highly regulated catchment in central India, supporting a population of over 16 million people. In such extensively modified hydrological systems, the influence of anthropogenic alterations is often underrepresented or excluded entirely by large-scale hydrological models. The Global Water Availability Assessment (GWAVA) model is applied to the Upper Narmada, with all major dams, water abstractions and irrigation command areas included, which allows for the development of a holistic methodology for the assessment of water resources in the basin. The model is driven with 17 Global Circulation Models (GCMs) from the Coupled Model Intercomparison Project Phase 5 (CMIP5) ensemble to assess the impact of climate change on water resources in the basin for the period 2031–2060. The study finds that the hydrological regime within the basin is likely to intensify over the next half-century as a result of future climate change, causing long-term increases in monsoon season flow across the Upper Narmada. Climate is expected to have little impact on dry season flows, in comparison to water demand intensification over the same period, which may lead to increased water stress in parts of the basin.


Author(s):  
Hassan Al-Najjar ◽  
Gokmen Ceribasi ◽  
Ahmet Iyad Ceyhunlu

Abstract The non-conventional water resources of seawater desalination, wastewater treatment, and stormwater harvesting are promising water resources to enhance the water supply and to cope with the groundwater depletion of the Gaza Coastal Aquifer (GCA). In total, the current daily operation of the short-term low-volume (STLV) seawater desalination plants produces 36,000 m3 and on the large-scale perspective, the seawater desalination capacity is planned to lift from 150,000 to 300,000 m3 per day by the years 2025 and 2035, respectively. The wastewater treatment and reuse activities are processed through three wastewater treatment plants with a total daily capacity of 130,000 m3 which is proposed to be lifted to a capacity of 235,000 m3 by the beginning of 2025. The stormwater collecting and harvesting supply the water sector by about 550–820 cubic meters per day. The proposed stochastic and artificial intelligence model that was developed in this study to simulate the interactive conditions between the groundwater and the water intervention plan show proper performance in terms of (r) = 0.95–0.99 and the root mean square error (RMSE) = 0.09–0.21. The model outputs reveal that the annual groundwater abstractions will reach 192 million cubic meters by 2040 with an annual increasing rate of +3%. By applying the model, the optimum utilizing of the unconventional water resources contributes positively to the recovery of the GCA which is experiencing a decline hot spot in the water level reaches to −19 m below mean sea level (MSL) and is expected to drop to −28 m MSL by 2040. The impact of unconventional water resources interventions was investigated by simulating the water table trend using stochastic models and artificial neural networks (ANNs) through three scenarios. The first scenario which addresses the non-intervention status indicates that the groundwater table will decline by −1.5% in the northern governorates and by −51% in the southern governorates of the Gaza Strip within 2020–2040. The second scenario demonstrates the impact of the existing water interventions which reveals an interim recovery in the groundwater balance until 2025 where the water consumption tends to increase rapidly. The third scenario illustrates the impact of applying the full water management intervention plan where the depression cone in the groundwater level will be restored by about +10 m.


2020 ◽  
Author(s):  
Dariusz Głąbicki ◽  
Anna Kopeć ◽  
Wojciech Milczarek ◽  
Natalia Bugajska ◽  
Karolina Owczarz

<p>Human activity, in particular mining operations are the cause of terrain changes, manifesting on the terrain surface in form of subsidence troughs. Presence of subsidence troughs in inhabited areas may be the cause of significant damage to the structure of buildings, roads and other man-made objects. Both vertical and horizontal terrain displacements occuring inside the trough could be the reason for deterioration of mentioned objects. Hence the need to measure the impact of mining activity on the terrain surface. Current measurement techniques used to determine terrain displacements include GNSS, leveling and SAR interferometry. One of the limitations of interferometric measurements is that displacement values are in the satellites Line-of-Sight (LOS). The fact that the values are only quasi-vertical causes an ambiguity when it comes to determining whether the dominating component of displacement is vertical or horizontal. Projecting the one-dimentional LOS motion to the vertical direction using only the incidence angle can cause significant errors if the magnitude of horizontal motion is considerable. However, the specific 3-dimentional diplacement components can be derived using different acquisition geometries. In order to determine all 3 components (horizontal North-South, East-West and vertical Up-Down), 3 different viewing geometries have to be used so that the equation can be solved. However, the North-South component can be neglected due to low sensitivity of Sentinel-1 SAR instrument to displacement in that direction. Following that, 2 different viewing geometries can be sufficient to derive the East-West and vertical components.</p><p>The aim of the study is to determine how mining activity affects the surface in terms of both horizontal and vertical displacements. Radar pairs from Sentinel-1 ascending and descending orbit were used to create interferograms, based on which LOS displacement fields were calculated. The North-South and East-West components of displacement were solved through the inversion of the linear equation system based on incidence angles, headings and LOS displacements of ascending and descending radar pairs.</p><p>The horizontal and vertical components were determined for differential interferograms obtained with the DInSAR method using Sentinel-1 imagery, as well as for time series displacement fields derived from the Small Baseline Subset (SBAS) approach over selected mining areas in Poland. The results have shown that data from ascending and descending orbits can be successfully merged in order to obtain both the horizontal (East-West) and vertical components of displacement over mining areas. Obtained values of displacements from both DInSAR and SBAS have confirmed that areas affected by mining activity are under the influence of changes in height, as well as shifts in horizontal direction. Thus it is important to take into consideration multiple acquisition geometries when it comes to studying deformations over mining areas.</p>


2012 ◽  
Vol 16 (8) ◽  
pp. 2685-2702 ◽  
Author(s):  
D. H. Yan ◽  
H. Wang ◽  
H. H. Li ◽  
G. Wang ◽  
T. L. Qin ◽  
...  

Abstract. The interbasin long-distance water transfer project is key support for the reasonable allocation of water resources in a large-scale area, which can optimize the spatio-temporal change of water resources to secure the amount of water available. Large-scale water transfer projects have a deep influence on ecosystems; besides, global climate change causes uncertainty and additive effect of the environmental impact of water transfer projects. Therefore, how to assess the ecological and environmental impact of megaprojects in both construction and operation phases has triggered a lot of attention. The water-output area of the western route of China's South-North Water Transfer Project was taken as the study area of the present article. According to relevant evaluation principles and on the basis of background analysis, we identified the influencing factors and established the diagnostic index system. The climate-hydrology-ecology coupled simulation model was used to simulate and predict ecological and environmental responses of the water resource area in a changing environment. The emphasis of impact evaluation was placed on the reservoir construction and operation scheduling, representative river corridors and wetlands, natural reserves and the water environment below the dam sites. In the end, an overall evaluation of the comprehensive influence of the project was conducted. The research results were as follows: the environmental impacts of the western route project in the water resource area were concentrated on two aspects: the permanent destruction of vegetation during the phase of dam construction and river impoundment, and the significant influence on the hydrological situation of natural river corridor after the implementation of water extraction. The impact on local climate, vegetation ecology, typical wetlands, natural reserves and the water environment of river basins below the dam sites was small.


2011 ◽  
Vol 8 (6) ◽  
pp. 10465-10500 ◽  
Author(s):  
D. H. Yan ◽  
H. Wang ◽  
H. H. Li ◽  
G. Wang ◽  
T. L. Qin ◽  
...  

Abstract. The interbasin long-distance water transfer project is a key support for the reasonable allocation of water resources in a large-scale area, which can optimize the spatiotemporal change of water resources to reinforce the guarantee of the access of water resources. And large-scale water transfer projects have a deep influence on ecosystems; besides, global climate change causes the uncertainty and additive effect of the ecological impact of water transfer projects. Therefore, how to assess the ecological and environmental impact of large-scale water transfer projects in both construction and operation has triggered a lot of attention. The water-output area of the western route of China's South-North Water Transfer Project was taken as the study area of the present article. According to relevant evaluation principles and on the basis of background analysis on the eco-environment of the study area, the influence factors were identified and evaluation indexes were established. The climate-hydrology-ecology coupled simulation model was used to imitate the laws of ecological and environmental change of the water resource area in a changing climate. The emphasis of influence analysis and quantitative evaluation was placed on the reservoir construction and operation scheduling, representative river corridors and wetlands, natural reserves and the water environment of river basins below the dam sites. In the end, an overall influence evaluation of the impact of the project on the water circulation and ecological evolution of the water resource area was conducted. The research results were as follows: the environmental impacts of the western route project in the water resource area were concentrated on two aspects, i.e. the permanent destruction of vegetation during the phase of dam construction and river impoundment, and the significant influence on the hydrological situation of natural river corridor after the implementation of water transfer. Its impact on local climate, vegetation ecology, typical wetlands, natural reserves and the water environment of river basins below the dam sites was small.


2021 ◽  
Author(s):  
Simon Munier ◽  
Bertrand Decharme

Abstract. Global scale river routing models (RRMs) are commonly used in a variety of studies, including studies on the impact of climate change on extreme flows (floods and droughts), water resources monitoring or large scale flood forecasting. Over the last two decades, the increasing number of observational datasets, mainly from satellite missions, and the increasing computing capacities, have allowed better performances of RRMs, namely by increasing their spatial resolution. The spatial resolution of a RRM corresponds to the spatial resolution of its river network, which provides flow direction of all grid cells. River networks may be derived at various spatial resolution by upscaling high resolution hydrography data. This paper presents a new global scale river network at 1/12° derived from the MERIT-Hydro dataset. The river network is generated automatically using an adaptation of the Hierarchical Dominant River Tracing (DRT) algorithm, and its quality is assessed over the 70 largest basins of the world. Although this new river network may be used for a variety of hydrology-related studies, it is here provided with a set of hydro-geomorphological parameters at the same spatial resolution. These parameters are derived during the generation of the river network and are based on the same high resolution dataset, so that the consistency between the river network and the parameters is ensured. The set of parameters includes a description of river stretches (length, slope, width, roughness, bankfull depth), floodplains (roughness, sub-grid topography) and aquifers (transmissivity, porosity, sub-grid topography). The new river network and parameters are assessed by comparing the performances of two global scale simulations with the CTRIP model, one with the current spatial resolution (1/2°) and the other with the new spatial resolution (1/12°). It is shown that CTRIP at 1/12° overall outperforms CTRIP at 1/2°, demonstrating the added value of the spatial resolution increase. The new river network and the consistent hydro-geomorphology parameters may be useful for the scientific community, especially for hydrology and hydro-geology modelling, water resources monitoring or climate studies.


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