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Input Output Analysis Foundations And Extensions

Indirect effects of COVID-19 on the environment.

Sustainability assessment is being increasingly viewed as an important tool to aid in the shift towards sustainability. However, this is a new and evolving concept and there remain very few examples of effective sustainability assessment processes implemented anywhere in the world. Sustainability assessment is often described as a process by which the implications of an initiative on sustainability are evaluated, where the initiative can be a proposed or existing policy, plan, programme, project, piece of legislation, or a current practice or activity. However, this generic definition covers a broad range of different processes, many of which have been described in the literature as 'sustainability assessment'. This article seeks to provide some clarification by reflecting on the different approaches described in the literature as being forms of sustainability assessment, and evaluating them in terms of their potential contributions to sustainability. Many of these are actually examples of 'integrated assessment', derived from environmental impact assessment (EIA) and strategic environmental assessment (SEA), but which have been extended to incorporate social and economic considerations as well as environmental ones, reflecting a 'triple bottom line' (TBL) approach to sustainability. These integrated assessment processes typically either seek to minimise 'unsustainability', or to achieve TBL objectives. Both aims may, or may not, result in sustainable practice. We present an alternative conception of sustainability assessment, with the more ambitious aim of seeking to determine whether or not an initiative is actually sustainable. We term such processes 'assessment for sustainability'. 'Assessment for sustainability' firstly requires that the concept of sustainability be well-defined. The article compares TBL approaches and principles-based approaches to developing such sustainability criteria, concluding that the latter are more appropriate, since they avoid many of the inherent limitations of the triple-bottom-line as a conception of sustainability.

Conceptualising sustainability assessment

Annual Energy Outlook 2008 With Projections to 2030

Several simplified design procedures for solar energy systems require monthly average meteorological data. Monthly average daily totals of the solar radiation incident on a horizontal surface are available. However, radiation data on tilted surfaces, required by the design procedures, are generally not available. A simple method of estimating the average daily radiation for each calendar month on surfaces facing directly towards the equator has been presented by Liu and Jordan [1]. This method is verified with experimental measurements and extended to allow calculation of monthly average radiation on surfaces of a wide range of orientations.

Calculation of monthly average insolation on tilted surfaces

As the major energy bases, numerous coal cities in China are facing severe challenges in terms of resources and environment. In order to overcome the disadvantages of static evaluation, this study selected Huainan city, a typical coal city in China, as the case, and combined with the improved SD (system dynamics) model, analyzed its RECC (resource and environmental carrying capacity) systematically and dynamically. Firstly, a SD model of RECC system including resource-environment and society-economy subsystem was constructed. Then, the control parameters were determined objectively according to the analysis results of BP-DEMATAL model. Thirdly, we designed 18 simulation scenarios based on orthogonal test to dynamically predict the development trend of RECC in different conditions. Results show that: (1) From 2019 to 2030, the RECC of Huainan is generally on the rise. (2) In all simulation scenarios, test 12 is the most effective way of improving RECC. (3) The factors with the greatest influence on the simulation results are GDP, output value of secondary production, total expending on environmental protection, and coal production. This study provides a reference for the analysis method of RECC and the sustainable development of coal cities. 

/pdf/analysis-on-the-resource-and-environmental-carrying-capacity-lr8dau04.pdf

Analysis on the resource and environmental carrying capacity of coal city based on improved system dynamics model: a case study of Huainan, China

Studying the ecosystem service value is of great value for solving the contradiction between ecological protection and economic development in the Huaihe River Basin. The characteristics of land use change were studied by using the Landsat remote sensing image data of Anhui section and Henan section of Huaihe River Basin from 2010 to 2020. The equivalent factor method was used to estimate the ecosystem service value, and the spatial autocorrelation model was used to analyze the spatial distribution characteristics of ecosystem service value The GM-BP model was used to predict the land use change in 2025. The results showed that: (1) From 2010 to 2020, cultivated land and construction land dominated the land use in the study area, and the degree of land use change changed from severe to stable. (2) The value of ecosystem services is in the transition stage from low level (II) to medium level (III). (3) ecosystem service value has a significant positive spatial correlation, and the spatial distribution is generally high in the southeast and low in the northwest. (4) Compared with 2020, ecosystem service value will rise by 0.54 % in 2025.

/pdf/spatio-temporal-evolution-and-simulation-prediction-of-38ioverg.pdf

Spatio-Temporal Evolution and Simulation
Prediction of Ecosystem Service Value
in Huaihe River Basin


 
 Ecological compensation is an effective way to alleviate watershed water ecological management. Considering the behavior of public participation, this paper constructs a tripartite evolutionary game model of the public, enterprises, and local governments, analyzes the evolutionary stability of the strategic choice of each participant, and discusses the influence of various factors on the strategic choice of the three parties. Combined with regional data, Matlab R2018b is used to simulate and analyze the evolution trend of each subject strategy in the Huaihe River Basin under different situations. The study found that: (1) The government's increase in rewards and punishments has significantly promoted public participation and enterprises' active governance of pollution, but increasing rewards and punishments are not conducive to local governments' own performance of regulatory responsibilities. (2) Increasing the amount of compensation and incentives is an effective way to promote public participation. (3) The sum of reputation gains, reputation losses, and rewards and punishments is greater than the difference between the additional benefits of negative governance and the cost of corporate governance, so as to ensure that enterprises actively control pollution.

https://iwaponline.com/aqua/article-pdf/doi/10.2166/aqua.2023.222/1250273/jws2023222.pdf

Research on watershed water ecological management and compensation based on evolutionary game

/pdf/author-correction-quantifying-the-cost-savings-of-global-35shhxea.pdf

Author Correction: Quantifying the cost savings of global solar photovoltaic supply chains

The evaluation of environmental status and the analysis of the influencing factors are significant to the transformation and high-quality development of mature coal cities. Choosing five typical mature coal cities in China as the case study, this study constructed the comprehensive evaluation system of ECC (environmental carrying capacity). It assessed the temporal variation of ECC from 2010 to 2019 with normal cloud mode. Then the main influencing factors were identified by analyzing the interaction mechanism between factors via BP-DEMATEL mode. The results indicated that: (1) The ECC level of most cities improved significantly. (2) The ECC levels of resource-environment subsystem were higher than that of society-economy subsystem. (3) Proportion of environmental protection spending, comprehensive utilization rate of industrial solid and atmospheric pollutants emission intensity were the main driving influencing factors, while the proportion of subsidence area and urbanization rate were the main characteristic influencing factors of most cities. Meanwhile, each city has some main influencing factors which are different from each other. This study compares the changing trend of ECC in different mature coal cities and analyzes the reasons, which provides scientific basis and decision-making reference for the formulation of relevant policies.

/pdf/analysis-of-the-dynamic-change-of-the-environmental-carrying-1qz7ofd0.pdf

Gang He

Papers

Analysis on the resource and environmental carrying capacity of coal city based on improved system dynamics model: a case study of Huainan, China

Spatio-Temporal Evolution and Simulation Prediction of Ecosystem Service Value in Huaihe River Basin

Research on watershed water ecological management and compensation based on evolutionary game

Author Correction: Quantifying the cost savings of global solar photovoltaic supply chains

Analysis of the Dynamic Change of the Environmental Carrying Capacity and Influencing Factors of Mature Coal Cities