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Creating a Pan-sharpened Raster Dataset of the study area. Creating a Pan-sharpened Raster Dataset of the study area.
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Land use and land cover (LULC) change is considered among the most discussed issues associated with development nowadays. It is necessary to provide factual and up-to-date information to policymakers to fulfil the increasing population’s food, work, and habitation needs while ensuring environmental sustainability. Geographical Information System (G...
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... UTM (Universal Transfer Mercator) 46 N coordinate system was utilised to re-project the images. Finally, using the panchromatic band (No. 8 for both Landsat 7 and Landsat 8) having a 15-m resolution, the area was pan-sharpened ( Figure 2) for better resolution. The pan-sharpened image was 15 m × 15 m. ...
Citations
... Page 2 of 16 challenges, particularly in the form of land subsidence (Alam et al. 2022;Arifeen et al. 2021;Islam and Chakraborty 2021;Howladar 2016a). The subsidence issue is a major concern due to the high population density (~ 1125 people per square kilometer) in the surrounding area (BBS 2021). ...
... The focus of their research was to study the impact of coal mine on water and surrounding environment. In a relatively recent study, Arifeen et al. (2021) has examined the impact of mine on surrounding environments at Barapukuria highlighting the changes of land use and land cover. In another study, Alam et al. (2022) has simulated the mine induced subsidence using the displacement discontinuity method and indirectly discussed the potential danger for surrounding settlement area. ...
... To calculate the aerial extent of the subsided area annually, we employed an indirect visual analysis method in ArcGIS 10.5 version after georeferencing the images (Martin 1989;Choudhury et al. 2012;Dang et al. 2021). The accuracy of the measured values was validated through direct field visits for the last three years (2018-2020), while the aerial extent of subsidence values was validated using previously published landcover maps, reports and journals (Arifeen et al. 2021;Brown et al. 2022;BCMCL 2023). ...
This study addresses the critical issue of land subsidence in densely populated agriculture-based country, Bangladesh, focusing on the Barapukuria coal mine area. Our research employed time-series analysis of Landsat satellite imagery from 2005 to 2020, coupled with vertical electrical sounding resistivity methods. Through the false color composite image analysis in Earth Engine and GIS-based mapping, we quantified the areal extent of subsidence, and results were validated by field visits and cross-referencing with ESRI and dynamic world land use–land cover maps. Our study revealed a concerning trend of subsidence moving from west to east, towards the two nearby residential areas. Most importantly, the rate of areal extent of subsidence was alarming (17.4 acres per year), resulting in a cumulative loss of 205 acres since 2008. Linear regression predicts that this subsided area will double to around 405 acres by 2030, indicating significant risk to nearby communities. The trajectory of subsidence extent led us to examine the subsurface condition of nearby villages using calibrated vertical electrical sounding and borehole data. This revealed a higher resistivity in the northern area, indicating a future subsidence risk compared to the southern part. This was further confirmed by subsurface lithology, composed mainly of Holocene deposits containing clay, clayey sand, and sand. These layers, with their inherent instability and higher consolidation potential, exhibited higher resistivity and more prone to land subsidence. Overall, this study provides valuable insights for predicting subsidence, assessing associated risks, and guiding policy decisions to prevent future damage and facilitate community rehabilitation.
... The purpose the of ecological transition of resource-exhausted cities is to solve the ecological environmental problems encountered in the current development, so that the indicators of urban ecosystems can be close to or even surpass those of other cities that do not rely on resources for development [6,7]. Ecological transition is a hot research topic in most resource-exhausted foreign cities, and there are two main ways to realize it. ...
... For example, in Germany's Ruhr area and Japan's Kitakyushu region [9,10], local administrators have diversified industries by formulating appropriate urban planning and policies at different stages, and urban ecological environments have been improved due to the success of economic transition. The other is to evaluate the ecological safety of resource-exhausted cities in the context of social and economic issues on the basis of which types of ecological rehabilitation of resource extraction zones are carried out [7,11,12]. Petr Sklenicka and Eva Charvatova propose the prioritization of the conservation of the most valuable parts of the ecological network in post-mining landscapes [13]. In recent years, the ecological transition of resource-exhausted cities in China has taken full advantage of foreign experience. ...
Resource-exhausted cities usually face problems of environmental degradation, landscape fragmentation, and impeded ecological mobility. By clarifying the spatial heterogeneity of ecological restoration needs, efficient and coordinated ecological protection and restoration can be carried out. This study selected Jiawang District, a typical resource-exhausted city, and constructed an ecological security evaluation framework to determine the ecological source area from the three aspects of ecosystem service importance, ecological sensitivity, and landscape stability. The resistance surface was corrected with ecological sensitivity evaluation data, and ecological corridors and ecological nodes were identified using circuit theory. Finally, it explored the spatial and temporal evolution of the key areas of territorial ecological restoration in Jiawang District. This study indicates that: (1) In 2000, 2010, and 2020, the ecological source areas were 123.59 km2, 116.18 km2, and 125.25 km2, and the corresponding numbers of ecological corridors were 53, 51, and 49. The total lengths of the ecological corridors were 129.25 km, 118.57 km, and 112.25 km, mainly distributed in the northern and central areas of the study area. (2) The study area contained 17, 13, and 19 ecological pinch points in 2000, 2010, and 2020, respectively, 16, 20, and 15 ecological obstacle points, and 8, 24, and 33 ecological fracture points, respectively. Targeted rehabilitation of these key areas can significantly improve ecological connectivity. (3) The key area of territorial ecological restoration in 2020 was composed of 125.25 km2 ecological source area, 8.77 km2 of ecological pinch point, 12.70 km2 of ecological obstacle point, and 33 ecological fracture points. According to the present situation of land use, protection strategies are put forward.
... Sci. disturbances, such as landscape modification and deterioration (Bajocco et al. 2012, Tadesse et al. 2017, land subsidence (Arifeen et al. 2021), soil erosion and degradation (Saini et al. 2015), and other environmental impacts including vegetation loss (Areendran et al. 2013, Qian et al. 2014, air pollution, ground water contamination (Goswami 2015), and changes in land use and cover classes (Garai and Narayana 2018). In this context, it is crucial to seriously monitor the impact of mining on land use land cover changes in order to minimize the impact of mining on the environment and to ensure efficient land management and decisionmaking to protect the ecosystem (Bocco et al. 2001, Laskar 2003, Turner et al. 2007, Ranjan et al. 2016, Goparaju et al. 2017. ...
The present study aims to assess the surface coal mining dominated land use land cover (LULC) changes concerning the Pakri Barwadih Coal Mining Project (PBCMP) and its surrounding buffer areas in Hazaribagh, Jharkhand. The central mining area covers an area of 39.50 km 2 , while the surrounding 2 km and 10 km buffer area including mining area covers 107.06 km 2 and 622.88 km 2 , respectively. Five different land use classes i.e. agriculture land, forest cover, mining area, barren land, built-up area, and water bodies in the mining area and adjacent area were analysed for six/ years, i.e., from 2016 to 2022. The changes were detected on a three-year intervals using IRS satellite LISS-IV images. This research depicts the present LULC scenario and the impact of mining on the landscape. In the mining area, there is a drastic reduction in agricultural land (41.26%) and forest land (28.23%). The waste land area recorded sharp increase in mining area (857.13%) and its 2 km surrounding area (138.84%) and 10 km buffer area (119.17%). The increase in built up area recorded for 2 km buffer area was 106.79%, whereas 61.06% for 10 km buffer area. It is expected to reduce the burden on policymakers to prepare an efficient mines development plan and meet sustainable development goal (SDG) 15 (Life on land). The paper highlights the importance of digital change detection techniques for nature and location of the change of the mining area.
... With the rapid advancement of industrialization and urbanization and the implementation of ecological civilization construction strategy, along with the massive mining and range expansion of mines, the geological environment problems of mines have become increasingly prominent and the degree of ecological damage has become more and more serious, leading to serious geological disaster problems in mines [11][12][13][14]. Especially on abandoned mines around urban areas and within the visual range along important traffic arteries, the resulting destruction of vegetation, exposed hills and land damage have a bad impact on the city image and ecological environment [15][16][17][18][19]. Mine geological hazards have become a hot issue of public concern and social attention, and gradually evolved into a major obstacle to social and economic development, making the prevention of geological hazards and ecological environment restoration and management increasingly a common demand [20][21][22]. Therefore, it is urgent to vigorously implement comprehensive remediation of mining geological environment, repair the ecological environment of mining areas, improve the level of scientific land use and further improve the image of the city. ...
Geological disasters in mines, ecological environment and geology and geomorphology are closely bound up with each other. To reduce or avoid economic loss and to decrease the threat degree of geological disasters to life safety, the protection of geological environment are formulated in this study. Specifically, this includes taking mines that are dominated by thin bedded carbonate as the research objects. The goals of this study include prevention and control of geological disasters and protection of geological environment. The data are based on characteristics of geological strata in mines collected by the exploration, and combined with the characteristics of geomorphic environment, relevant rules aiming at the prevention and control of geological disasters. Then, pursuant to the selection of indicators, an evaluation system is constructed to verify the effectiveness of measures and strategies proposed, in which the score value is converted into the corresponding level to test the implementation effect of the measures and strategies proposed. Through comparing the changes of the utility levels before and after the implementation of measures and strategies proposed, it can be seen that the geological disaster levels of the five mining areas in the study region are respectively improved from the non-ideal levels V, IV, V, V, IV to II, I, I, II, II, with the tailings pond leakage times less than 4 times and collapse volume less than 5m3. And, the levels of geological environment are upgraded from levels IV, IV, IV, V, V to ideal levels II, II, II, I, II, accomplished by the vegetation coverage rate of the mine reaching more than 35%, as well as the recovery rate of exploitation and utilization rate of tailings both exceeding 85%, which indicates that the protection strategy proposed in this paper has good practicality and feasibility.
The hills of Himalayan region are rich in flora and fauna diversity. The recent developmental activities (specifically industries and tourism) are adversely impacting the biodiversity of fragile ecosystem of Himalaya. Small scale mines of limestone’s are prominent in the hills of Himachal Pradesh and Uttarakhand. The mines of phosphorite, soapstone and magnesite are also active in these hills. The blasting, drilling and excavation of steep slopes of hills for mines is triggering the landslides and earthquakes. The application of bioengineering techniques or introduction of exotic species for the stabilization of steep slopes hinder the growth of native plants leading to change in the floral diversity. The north-eastern Himalayan states such as Meghalaya and Nagaland are enriched in coal reserves and extensive mining is being carried out at small and large scale. The conflict on the rights of coal reserves in the Meghalaya and Nagaland are highly reported and sometimes it also results in violence and loss of human life. The recent studies show the loss of forest cover, degradation in quality of soil and water in the mining landscape. The pollution level of cleaner air of the north-eastern Himalayan is continuously increasing. It is also observed that the coal mines of Meghalaya are generating acid mine drainage and are potential source of metal contamination.
