A historical and future impact assessment of mining activities on surface biophysical characteristics change: A remote sensing-based approach

Firozjaei, Mohammad Karimi; Seddighi, Amir Saied; Firozjaei, Hamzeh Karimi; Kiavarz, Majid; Homaee, Mehdi; Arsanjani, Jamal Jokar; Makki, Mohsen; Naimi, Babak; Alavipanah, Seyed Kazem

doi:10.1016/j.ecolind.2020.107264

Cited by 60 publications

(40 citation statements)

References 75 publications

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“…The boundary of green patches has minimal contact with the external environment, thereby facilitating the stable maintenance of the low temperature of the green space [ 24 , 25 , 26 ]. Green coverage, which is generally evaluated in terms of the normalized difference vegetation index (NDVI) or fractional cover values of the vegetation space (Fv), is negatively correlated with the land surface temperature (LST) in the summer [ 27 , 28 , 29 ]. Green space with large Fv values has an obvious cooling effect and a complex vegetation structure is helpful to prevent water evaporation [ 30 ].…”

Section: Introductionmentioning

confidence: 99%

Interaction of Urban Rivers and Green Space Morphology to Mitigate the Urban Heat Island Effect: Case-Based Comparative Analysis

Jiang

Huang

Shi

et al. 2021

IJERPH

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The spatial morphology of waterfront green spaces helps generate cooling effects to mitigate the urban heat island effect (UHI) in metropolis cities. To explore the contribution and influence of multi-dimensional spatial indices on the mitigation of UHIs, the green space of the riparian buffer along 18 river channels in Shanghai was considered as a case study. The spatial distribution data of the land surface temperature (LST) in the study area were obtained by using remote sensing images. By selecting the related spatial structure morphological factors of the waterfront green space as the quantitative description index, the growth regression tree model (BRT) was adapted to analyze the contribution of various indexes of the waterfront green space on the distribution of the LST and the marginal effect of blue–green synergistic cooling. In addition, mathematical statistical analysis and spatial analysis methods were used to study the influence of the morphological group (MG) types of riparian green spaces with different morphological characteristics on the LST. The results showed that in terms of the spatial structure variables between blue and green spaces, the contribution of river widths larger than 30 m was more notable in decreasing the LST. In the case of a larger river width, the marginal effect of synergistic cooling could be observed in farther regions. The green space that had the highest connectivity degree and was located in the leeward direction of the river exhibited the lowest LST. In terms of the spatial morphology, the fractional cover values of the vegetation (Fv) and area (A) of the green space were the main factors affecting the cooling effect of the green space. For all MG types, a large green patch that had a high green coverage and connectivity degree, as well as was distributed in the leeward direction of the river, corresponded to the lowest LST. The research presented herein can provide methods and development suggestions for optimizing spatial thermal comfort in climate adaptive cities.

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Section: Introductionmentioning

confidence: 99%

Interaction of Urban Rivers and Green Space Morphology to Mitigate the Urban Heat Island Effect: Case-Based Comparative Analysis

Jiang

Huang

Shi

et al. 2021

IJERPH

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“…The area of tree-based green space within approximately 0.32 ha can effectively enhance their cooling intensity [30]. A high coverage ratio of green space corresponds to a lower surface temperature [31,32]. Belt-shaped green areas parallel to the wind direction appear to have a higher cooling effect than those vertical to the wind direction and the difference of the cooling effect reached 6.3 K between the two orientation scenarios with big canopy trees [33].…”

Section: Introductionmentioning

confidence: 99%

Cooling Island Effect of Blue-Green Corridors: Quantitative Comparison of Morphological Impacts

Jiang

Huang

Shi

et al. 2021

IJERPH

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The patterns of green corridors in urban riverfront districts provide different synergistic cooling effects of blue-green space in urban areas. The purpose of this study is to quantify the spatial morphological impact of green corridors in riverfront block-scale area on the cooling effect. Three representative patterns (radiate, grid and dendritic) were selected in the study. The comprehensive influences analysis between multi-dimensional factors of spatial structure and morphology of green corridors and Ta (air temperature) distribution are processed by Envi-met4.4.5 simulation data and statistical analysis methods, such as regression tree model (BRT), were combined. The results showed that the D (distance from riverbank) has the greatest impact on the cooling effect of each belt green space. The D in the range of 600–750 m was affected by the cooling effect of blue-green space; The orientation with parallel to (southeast–northwest) or roughly the same as the prevailing wind direction (north–south) green corridors had relatively better cooling effect. When the width of green corridor was 20–25 m, the ME (marginal effect) of cooling was the largest; at 30–35 m (corridor width), the overall ME of cooling was the best; When the dPC (decreased probability connectivity, here the index was adapted to describe the connectivity degree) of green corridors was in the range of 0.5–1.5, the cooling effect of green corridor could be significantly improved. When dPC is 1.5, its marginal effect on temperature reached the maximum. The study provided a quantitative correlation technology for the morphological influence of blue-green space on the distribution of UCI (urban cooling island), which can guide the spatial layout control of green corridors in the planning and design of urban riverfront district.

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“…Mediante observación directa y con base en conversaciones con los habitantes del lugar, fue posible identificar como impacto la deforestación generada por la apertura de carreteras que fragmentan el hábitat de especies de flora y fauna presentes en el área. En efecto, la industria petrolera es considerada una de las principales impulsoras de los cambios de uso del suelo (Acheampong et al, 2018;Firozjaei et al, 2021) lo cual, en consecuencia, la convierte en una de las principales responsables del cambio climático.…”

Section: Deforestación Y Contaminación Del Suelounclassified

Información Geográfica Voluntaria para la Detección de Impactos Socioambientales de la Actividad Petrolera en la Amazonía Ecuatoriana

Aguirre-Saula

Pabón-Salazar

et al. 2021

UDAVER

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En esta investigación se estudia la Información Geográfica Voluntaria (IGV) como herramienta para generar información geográfica independientemente de la profesión de los usuarios. Se identificaron áreas en las provincias de Orellana y Sucumbíos, en las que se realizan o se han realizado actividades petroleras, y se recorrió el denominado Toxic Tour de la Mano Negra de Chevron. Mediante el uso de la aplicación GeoODKCollect y la plataforma ONA se georreferenciaron elementos petroleros que ocasionan impactos socioambientales y riesgos para la salud de los habitantes en el noreste de la Amazonía ecuatoriana, en las provincias de Orellana y Sucumbíos. Se confirmó que la empresa Chevron – Texaco no ha ejecutado el proceso de remediación y los riesgos ambientales, sociales y de salud en la zona de estudio y sus alrededores continúan. Palbras clave: IGV, ONA, GeoODKCollect, Amazonía, Petróleo, Ecuador AbstractIn this research, Voluntary Geographic Information (VGI) is studied as a tool to generate geographic information regardless of the profession of the users. The so-called Toxic Tour de la Mano Negra de Chevronand petroleum associated gas faring sites were visited. With the use of the GeoODKCollect applicationand the ONA platform, the authors georeferenced factors associated to oil extractivism which causesocial and socioenvironmental impacts and health risks to the northeast of the Ecuadorian Amazon inhabitants, in the provinces of Orellana and Sucumbíos. It was identifed that the remediation process that the Chevron - Texaco Company has executed is insufcient and the environmental, social and health risks in the study area and its surroundings continue.Keywords: VGI, ONA, GeoODKCollect, Amazon, Oil, Ecuador

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A historical and future impact assessment of mining activities on surface biophysical characteristics change: A remote sensing-based approach

Cited by 60 publications

References 75 publications

Interaction of Urban Rivers and Green Space Morphology to Mitigate the Urban Heat Island Effect: Case-Based Comparative Analysis

Interaction of Urban Rivers and Green Space Morphology to Mitigate the Urban Heat Island Effect: Case-Based Comparative Analysis

Cooling Island Effect of Blue-Green Corridors: Quantitative Comparison of Morphological Impacts

Información Geográfica Voluntaria para la Detección de Impactos Socioambientales de la Actividad Petrolera en la Amazonía Ecuatoriana

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