Segmentation of OECD countries on the basis of selected global environmental indicators using k-means non-hierarchical clustering.

In order to allocate resources and describe progress, frequently nations are grouped together by many international authorities. A variety of pertinent indicators can provide a more useful basis for classification for each specific area of interest. Based on commonalities between various variables connected to the global environmental sector, we developed a novel typology of country clusters. Four indicators were chosen after a review of the literature. In order to optimize data availability across as many OECD nations as feasible, indicators were chosen based on their relevance for all the OECD countries. Countries were arranged into a natural cluster using the hierarchical clustering method. Four groups, covering 31 countries, were the result of two stages of grouping. These four clusters were found to be more compact and clearly divided which gives policymakers a clear-cut idea as to how these environmental indicators are deteriorating day by day and year by year and what needs to be done to be more environmentally sustainable and responsible.

Sustainable hydrogen production via microalgae: Technological advancements, economic indicators, environmental aspects, challenges, and policy implications.

Hydrogen has emerged as an alternative energy source to meet the increasing global energy demand, depleting fossil fuels and environmental issues resulting from fossil fuel consumption. Microalgae-based biomass is gaining attention as a potential source of hydrogen production due to its green energy carrier properties, high energy content, and carbon-free combustion. This review examines the hydrogen production process from microalgae, including the microalgae cultivation technological process for biomass production, and the three main routes of biomass-to-hydrogen production: thermochemical conversion, photo biological conversion, and electrochemical conversion. The current progress of technological options in the three main routes is presented, with the various strains of microalgae and operating conditions of the processes. Furthermore, the economic and environmental perspectives of biomass-to-hydrogen from microalgae are evaluated, and critical operational parameters are used to assess the feasibility of scaling up biohydrogen production for commercial industrial-scale applications. The key finding is the thermochemical conversion process is the most feasible process for biohydrogen production, compared to the pyrolysis process. In the photobiological and electrochemical process, pure hydrogen can be achieved, but further process development is required to enhance the production yield. In addition, the high production cost is the main challenge in biohydrogen production. The cost of biohydrogen production for direct bio photolysis it cost around $7.24 kg-1; for indirect bio photolysis it costs around $7.54 kg-1 and for fermentation, it costs around $7.61 kg-1. Therefore, comprehensive studies and efforts are required to make biohydrogen production from microalgae applications more economical in the future.

Towards green economy and sustainable development in Bangladesh: assessing the role of social and environmental indicators.

The evolution towards a green economy integrating social, economic, and environmental concerns has opened a new window to pursue the sustainable development goals (SDGs), especially for emerging nations. Nonetheless, despite being a pressing concern on a global scale, empirical research into the potential for green economy development in the context of Bangladesh has remained notably inadequate. To fill this void, this study is an attempt to evaluate the connection among economic growth, carbon dioxide (CO2) emissions, education, life expectancy, and technology to conclude the ecological and socio-economic repercussions of a green economy in Bangladesh's framework of achieving SDGs. Considering the statistical features of the annual data from 1990 to 2019, the autoregressive distributed lag (ARDL) method has been employed to analyze the connections between the chosen variables. The empirical outcomes show that an upsurge in CO2 is accompanied by a 3.66% increase in GDP over the long term, suggesting a positive and statistically significant relationship between the two variables. In addition, GDP increases by about 4.2% for every 1% increase in life expectancy. However, the relationship between technological innovation and education found an insignificant positive linkage with GDP. The most important takeaway from these findings is that the growth of Bangladesh's economy is occurring at the expense of the environment. Hence, this research recommends that, as a developing nation, Bangladesh should concentrate on environment-friendly alternatives, which can be done through the introduction of a green economy to achieve a sustainably developed economy.

Application of spatial environmental indicators in the assessment of degradation potential of water resources in water basins.

Changes in land use have been occurring in a continuous and disorderly way in recent decades due to rapid population growth and the growing demand for food. These constant changes result in a series of harmful effects to the environment, especially to water resources, significantly changing their availability and quality. This study aims to evaluate the degradation potential of watersheds through an evaluation of some environmental indicators using arithmetic means to construct an index called in this research "index of potential environmental degradation" (IPED). To form the IPED, the hydrographic sub-basins of the Sorocabuçu River, located in the central west of the State of São Paulo, Brazil, comprised the study area. The results showed that most hydrographic sub-basins, that is, eight units, present degradation values ranging from moderate to very high, resulting mainly from low conservation values of forests plus a use destined to the planting of temporary cultures depending on good physical conditions. On the other hand, only one sub-basin showed a low degradation value. The methodology used for the development of the IPED is easy to apply and an effective tool for environmental analyses. It may contribute to studies and forms of planning and land use management aiming the conservation of water resources and protected areas and reduction of degradation.

Spatial and temporal dynamics of neglected tropical diseases in the Marajó Archipelago, Amazon-PA / Dinâmica espacial e temporal das doenças tropicais negligenciadas no Arquipélago do Marajó, Amazônia-PA / Dinámica espacial y temporal de enfermedades tropicales desatenidas en el Archipiélago de Marajó, Amazonia-PA

Background and objective: the self-styled population of Marajoara is vulnerable due to the neglect of basic services governed by the constitution, such as basic sanitation, health and education. Therefore, the search and mapping of epidemiological data are necessary in order to have a real dimension of how certain diseases behave in the region. Therefore, this study aimed to analyze the space-time distribution of neglected tropical diseases and their relationship with socio-environmental indicators in the Marajó Archipelago, Pará, Amazon. Methods: this is a descriptive and ecological study, with a time series, with a quantitative approach, which assessed the incidence rate of neglected tropical diseases in the 16 municipalities that make up Marajó from 2007 to 2016. Analyzes of socioeconomic and population data were carried out, extracted from the Federation of the Industries of the State of Rio de Janeiro (FIRJAN System) and the Brazilian Institute of Geography and Statistics. Results: according to the survey, American cutaneous leishmaniasis, dengue and tuberculosis were the most reported diseases in total. All municipalities had at least one disease in the period. The spatial distribution of the numbers of cases of tropical diseases in all the municipalities that make up the Archipelago between 2007 and 2016 was carried out. Conclusion: the anthropization of the environment has favored the proliferation of vector agents and, consequently, the incidence of diseases related to inadequate basic sanitation, whose configuration is the result of a disorganized urbanization process and historically exclusive development, with a lack of investment, making this damage even more dramatic for the population.(AU)

Justificativa e objetivo: a população autodenominada de marajoara encontra-se em vulnerabilidade devido às negligências de serviços básicos regidos na constituição, como saneamento básico, saúde e educação. Logo, a busca e o mapeamento de dados epidemiológicos são necessários para que se tenha uma dimensão real de como se comportam determinados agravos na região. Diante disso, o estudo objetivou analisar a distribuição espaço-temporal das doenças tropicais negligenciadas e sua relação com indicadores socioambientais no Arquipélago do Marajó, Pará, Amazônia. Métodos: este estudo é do tipo descritivo e ecológico, de série temporal, com abordagem quantitativa, que avaliou a taxa de incidência das doenças tropicais negligenciadas nos 16 municípios que compõem o Marajó no período de 2007 a 2016. Foram realizadas análises de dados socioeconômicos e populacionais extraídos da Federação das Indústrias do Estado do Rio de Janeiro (Sistema FIRJAN) e do Instituto Brasileiro de Geografia e Estatística. Resultados: de acordo com o levantamento, a leishmaniose tegumentar americana, a dengue e a tuberculose foram os agravos de maior notificação no total. Todos os municípios apresentaram, ao menos, uma doença no período. Realizou-se a distribuição espacial dos números de casos de doenças tropicais em todos os municípios que compõem o Arquipélago entre 2007 e 2016. Conclusão: a antropização do ambiente vem favorecendo a proliferação de agentes vetoriais e, consequentemente, a incidência de doenças relacionadas ao saneamento básico inadequado, cuja configuração é fruto de um processo de urbanização desordenado e desenvolvimento historicamente excludente, com ausência de investimentos, tornando esse prejuízo ainda mais dramático para a população.(AU)

Justificación y objetivo: la población autodenominada marajoara es vulnerable debido a la desatención de los servicios básicos regulados en la constitución, como saneamiento básico, salud y educación. Por lo tanto, la búsqueda y el mapeo de datos epidemiológicos son necesarios para tener una dimensión real de cómo se comportan ciertas enfermedades en la región. Por lo tanto, el estudio tuvo como objetivo analizar la distribución espacio-temporal de las enfermedades tropicales desatendidas y su relación con los indicadores socioambientales en el Archipiélago de Marajó, en el estado de Pará, Amazonas. Métodos: se trata de un estudio descriptivo y ecológico, con serie temporal, con enfoque cuantitativo, que evaluó la tasa de incidencia de las enfermedades tropicales desatendidas en los 16 municipios que componen el Marajó de 2007 a 2016. Se realizaron análisis de datos socioeconómicos y poblacionales extraídos de la Federación de Industrias del Estado de Rio de Janeiro (Sistema FIRJAN) y del Instituto Brasileño de Geografía y Estadística. Resultados: según la encuesta, la leishmaniasis cutánea americana, el dengue y la tuberculosis fueron las enfermedades más notificadas en total. Todos los municipios presentaron al menos una enfermedad en el período. La distribución espacial de las cifras de casos de enfermedades tropicales en todos los municipios que conforman el Archipiélago se realizó entre 2007 y 2016. Conclusión: la antropización del medio ambiente viene favoreciendo la proliferación de agentes vectores y, consecuentemente, la incidencia de enfermedades relacionadas con saneamiento básico inadecuado, cuya configuración es fruto de un proceso de urbanización desordenado y desarrollo históricamente excluyente, con ausencia de inversiones, lo que hace aún más dramática esta pérdida para la población.(AU)

Assessing trade-offs among productive, economic, and environmental indicators of forage systems in southern Tibetan crop-livestock integration.

Fostering crop-livestock integration via crop-forage rotation provides opportunities to cope with land degradation, feed deficit, and agropastoral sustainability. Farmers' preferences for forage options are influenced by economic benefit, environmental preference, and productive performance. However, there is little information available on evaluating multiple trade-offs of forage systems for the design of crop-forage rotations. Here, we performed a comprehensive evaluation to compare the economic, environmental, and productive indicators of five typical forage systems in terms of habitat conditions, soil ecosystem services, economic profit, and forage yield and nutritive value on the southern Tibetan Plateau. Alfalfa pasture and silage corn were mostly cultivated in lower altitudes, with more abundant precipitation, and higher growing degree days. Soil carbon and nitrogen accumulation were significantly higher in perennial alfalfa than in the other forage systems. The relative feed value of alfalfa pasture was also evidently greater than the other forage systems, whereas the yield of silage corn was among the highest. Alfalfa pasture presented superior economic benefits compared to the others. But the alfalfa pasture over six years showed a significant decrease in soil carbon and nitrogen storage, net present value, and yield. Forage systems generally have more soil carbon accumulation, but only forage legumes are more likely to positively affect soil nitrogen retention compared to cereal croplands. The trade-offs among economic, environmental, and productive indicators demonstrated that annual forage systems (silage corn, forage oat, and ryegrass) met productive target rather than environmental and economic objectives, while perennial alfalfa showed synergies among the three goals. These findings indicate that integrating crop-forage rotation, particularly introducing legume forages into farming systems is an adaptive option for crop-livestock integration on the southern Tibetan Plateau. Given the large topographic variation, suitable crop-forage systems should be designed for the heterogeneous Yarlung Zangbo River valleys. Among them, alfalfa-silage corn intercropping is recommended as a promising system to meet both productivity and profitability.

Using circular economy principles in the optimisation of sludge-based activated carbon production for the removal of perfluoroalkyl substances.

Massive sewage sludge (SS) production from municipal wastewater treatment plants and the presence of numerous pollutant types render the process of SS treatment and disposal costly and complex. Here, resource recovery from SS was maximised via the optimisation of sludge-based activated carbon (SBAC) production for the removal of poly- and perfluoroalkyl substances (PFASs), while considering economic factors and minimising environmental impacts. SBAC production optimisation was realised under different operating conditions (different ZnCl2 impregnation ratios and different pyrolysis activation temperatures and durations). The sorption capacity of the optimised SBAC with respect to the removal of nine commonly detected PFASs, with environmentally relevant concentrations (∽50 µg/L), from simulated wastewater was evaluated. Economic analysis and life-cycle assessment (LCA) were also performed to determine the feasibility of the process and its potential role in the circular economy. Batch adsorption tests confirmed the high efficiency of the optimised SBACs for PFAS removal (93-100 %), highlighting the possibility of converting SS to SBAC. Economically speaking, the optimised SBAC at 1.5 M ZnCl2, 500 °C, and 0.75 h reduced total production cost by 49 %. Further, the cost could be reduced to as little as 1087 US $/metric-ton compared with that corresponding to the original conditions (2.5 M ZnCl2, 500 °C, 2 h; 2144 US $/metric-ton). LCA results also showed that freshwater ecotoxicity, marine ecotoxicity, and human non-carcinogenic toxicity were the most affected environmental impact indicators, showing a 49 % decrease when ZnCl2 impregnation ratio was reduced from 2.5 to 1.5 M. These findings highlighted the optimal conditions for the production of SBAC with high sorption capacity at a reduced cost and with reduced environmental impacts. Thus, they can serve as valuable tools for decision making regarding the selection of the most sustainable and economically feasible process for PFAS removal.

An impact of climate change and groundwater salinity on shadow price of water, farmers' revenue, and socioeconomic and environmental indicators in district Kohat-Pakistan.

Globally, agricultural productivity is adversely impacted due to climatic changes as the temperatures rises and precipitation decreases, and especially in Pakistan, which ultimately enhanced groundwater salinity and harmed water quality in the country. However, the impacts of groundwater salinity and climate change on farmers' revenue have not been fully understood in Pakistan. Therefore, the focus of current research is the assessment of shadow price of water, farmers' revenue, and socioeconomic and environmental indicators affected by variations in groundwater salinity, precipitation, and temperature. The estimation of crop yield sensitivity to groundwater salinity, precipitation, and temperature and their prediction for 2030, 2040, and 2050 time periods was accomplished through the technique of General Maximum Entropy and Response-Yield function. Moreover, the assessment of groundwater quality and climate variable impacts on socioeconomic and environmental indicators was obtained through Target Motad-PMP model. In the end, the most suitable climate change scenario in the study area was established by applying a multi-criteria decision-making method. The results revealed that groundwater salinity and temperature expressed a significantly increasing trend with the Z values of 5.82 and 2.15, respectively. While the precipitation depicted a significantly decreasing trend (Z value = -3.37). The negative impact of climatic changes and groundwater salinity was revealed for revenue risk and shadow prices of water. The most negative impact on income risk and shadow prices is during 2050 horizon with a decrease by 11.4 and 19.4% respectively. The environmental index is the most important with a priority of 43.4% compared to the socio-economic indicators. The sub-index water use is also significant in the study area with a priority of 28.1%. A2 is the most appropriate climate scenario conferring to the TOPSIS ranking method. Therefore, the A2 scenario should be taken into account for the policy of adaptation to the climate change wonder in district Kohat.

Learning from practice: case studies of health in strategic environmental assessment and environmental impact assessment across the WHO European Region. Executive summary

The report is intended for practitioners from environmental, health and planning sectors at all levels of governments. It can also support intergovernmental processes related to relevant conventions and protocols. This report does not discuss basic terminology in impact assessment.

Inequalities in dampness in the home [February 2022]: environmental health inequalities: fact sheet series

This fact sheet series documents the magnitude of environmental health inequalities within countries in the WHO European Region. Environmental health inequalities relate to socioeconomic, sociodemographic or spatial differences in exposure to environmental health risk factors and to differences in health status caused by environmental conditions. The dampness in the home fact sheet provides available data on the unequal distribution of indoor dampness within countries in the Region, updating earlier assessments.

Inequalities in overcrowding [February 2022]: environmental health inequalities: fact sheet series

This fact sheet series documents the magnitude of environmental health inequalities within countries in the WHO European Region. Environmental health inequalities relate to socioeconomic, sociodemographic or spatial differences in exposure to environmental health risk factors and to differences in health status caused by environmental conditions. The overcrowding fact sheet provides available data on the unequal distribution of living space within countries in the Region, updating earlier assessments.

Inequalities in inability to keep the home adequately warm [February 2022]: environmental health inequalities: fact sheet series

This fact sheet series documents the magnitude of environmental health inequalities within countries in the WHO European Region. Environmental health inequalities relate to socioeconomic, sociodemographic or spatial differences in exposure to environmental health risk factors and to differences in health status caused by environmental conditions. The inability to keep the home adequately warmfact sheet provides available data on the unequal distribution of access to affordable energy within countries in the Region, updating earlier assessments.

Inequalities in lack of a flush toilet in the dwelling [February 2022]: environmental health inequalities: fact sheet series

This fact sheet series documents the magnitude of environmental health inequalities within countries in the WHO European Region. Environmental health inequalities relate to socioeconomic, sociodemographic or spatial differences in exposure to environmental health risk factors and to differences in health status caused by environmental conditions. The lack of a flush toilet in the dwelling fact sheet provides available data on the unequal distribution of hygiene amenities within countries in the Region, updating earlier assessments.

Inequalities in access to at least basic drinking-water services [February 2022]: environmental health inequalities: fact sheet series

This fact sheet series documents the magnitude of environmental health inequalities within countries in the WHO European Region. Environmental health inequalities relate to socioeconomic, sociodemographic or spatial differences in exposure to environmental health risk factors and to differences in health status caused by environmental conditions. The access to at least basic drinking-water services fact sheet provides available data on the unequal distribution of access to safe and clean drinking-water within countries in the Region, updating earlier assessments.

Inequalities in lack of a bath or shower in the dwelling [February 2022]: environmental health inequalities: fact sheet series

This fact sheet series documents the magnitude of environmental health inequalities within countries in the WHO European Region. Environmental health inequalities relate to socioeconomic, sociodemographic or spatial differences in exposure to environmental health risk factors and to differences in health status caused by environmental conditions. The lack of a bath or shower in the dwelling fact sheet provides available data on the unequal distribution of hygiene amenities within countries in the Region, updating earlier assessments.

Investigating marginal effect of economic growth on environmental quality based on six environmental indicators: does financial development have a determinative role in strengthening or weakening this effect?

Given the complexity of the correlation of economic growth with financial development, and their interactive impacts on environmental quality, this study attempted to present new insights into indecisive outcomes from the contribution of financial development in determining the impressionability of environmental indicators under economic growth conditions. Previous studies only employed a single environmental indicator for analyzing the correlation between economic factors and environmental quality. However, six environmental indicators are adopted in this study to evaluate environmental quality and to reach major goals of this research. To this end, using 2-stage system generalized technique of moment estimator, the association of economic growth, energy consumption, financial development, environmental indicators, and trade openness is determined in selected OPEC countries for years 2010 to 2019. Findings indicated that accompanied by the effects of economic growth on any EFI, ANS, PN, and EPI variables, the financial development enhances such effect. This is while, the financial development would weaken the economic growth effect on the ESI variable. Regarding EVI, no significant association was observed. Regarding to ESI, EPI, and PN, trade openness applies a significantly positive impact on environmental quality; on the other hand, it has positive role in environmental degradation based on EFI and ANS. This is while, according to the EVI variable, trade openness has not meaningful impact on environmental status. Finally, energy use has significant and positive effects on environmental degradation in each of environmental indicators. However, this variable has not shown significant impact on EPI and ANS. Alternatively, findings indicated that financial development can be considered an important and key variable in improvement of the environmental quality due to the moderating role it plays relative to the negative economic growth effect on the environmental quality. At the end of this paper, some limitations are presented, and some suggestions for further studies are provided as well.

A Data Envelopment Analysis of the Impact of European Funds on Environmental Indicators.

The European Union (EU) has launched two regional investment programs of European Funds (FE) in the last decade. One covers the period of 2007 to 2013, and the second from 2014 to 2020. Among the goals contained in FE regulations is that of achieving sustainable growth through the conversion of fossil energy production systems to renewable energy. This research has had a goal to determine whether the countries of the Eurozone maintain homogeneous levels of efficiency in the use of these resources to improve the levels of environmental quality related to the use of this type of energy. The adopted research method for efficiency analyses was Data Envelopment Analysis (DEA). Findings revealed that the efficiency in the use of renewable energies is very uneven among the analyzed countries and that these differences are maintained throughout the analyzed period. These results suggest that the criteria for the distribution of the funds should be modified. The current distribution is mainly based on the per capita income of the countries and/or regions. In this way, compliance with the European Green Pact approved in September 2020 would be guaranteed.