Resource consumption

Résumé

Resource consumption is about the consumption of non-renewable, or less often, renewable resources. Specifically, it may refer to: water consumption energy consumption electric energy consumption world energy consumption natural gas consumption/gas depletion oil consumption/oil depletion logging/deforestation fishing/overfishing land use/land loss or resource depletion and general exploitation and associated environmental degradation Measures of resource consumption are resource intensity and resource efficiency. Industrialization and globalized markets have increased the tendency for overconsumption of resources. The resource consumption rate of a nation does not usually correspond with the primary resource availability, this is called resource curse. Unsustainable consumption by the steadily growing human population may lead to resource depletion and a shrinking of the earth's carrying capacity.

Source officielle

https://en.wikipedia.org/wiki/Resource_consumption

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Publications associées (3)

Personnes associées (2)

Unités associées (1)

Concepts associés (8)

Cours associés (8)

Séances de cours associées (27)

Research problem: Housing is responsible for a considerable part of global resource consumption. In Switzerland, it accounts for almost one third of the country's CO2 emissions and half of the total energy demand. Thus, housing plays an important role in the transition to sustainable development. Housing has been thoroughly studied from a disciplinary perspective, e.g., economics, social sciences, psychology, engineering. However, little attention has been paid to housing as a system of interrelated actors, e.g., developers, owners, tenants and state, whose actions might be described by different disciplines. Aim: The aim of this thesis is to investigate how a change in the construction practices of property owners in combination to a more space-efficient allocation of dwellings to households and a behavioural change of tenants can achieve a substantial reduction in the environmental impact of housing. This dissertation focuses on the interrelations of housing actors, concentrating mainly on the property owners and explores which measures and to what extent can lead to a reduction of space consumption of housing.Methods: Housing is characterised by a high level of complexity, therefore a transdisciplinary approach is adopted. Firstly, the Swiss housing market and its unique attributes are studied. However, in this thesis, we study a subset of the Swiss rental housing market; it comprises two housing cooperatives: ABZ in Zurich and SCHL in Lausanne as well as the insurer and asset manager Swiss Mobiliar. Their housing stocks, of approximately 10,000 dwellings, are examined in depth and are used as a case study. Extensive data gathering allowed to create an exhaustive inventory of the building stock of the three property owners. The data on tenants was limited, thus, we conducted a tenant survey. Furthermore, a series of workshops with both tenants and property owners were organised to study their decision-making processes. A bottom-up agent-based model (ABM) is built, which portrays the case study housing system. The main actors of the rental housing market (property owners and households) are represented in the model by agents; the owner agents make decisions about their building stock and tenants, while the household agents choose a dwelling based on their needs and housing preferences. The dynamic evolution of both owners and households and the interaction between them is simulated in the model and allows the study of emergent phenomena. The present thesis attempts the assessment of the environmental impact of housing through the lens of housing sufficiency. Space consumption, in terms of dwelling surface and floor area per capita, is considered as the largest determinant of resource consumption.Results: The simulation results show that measures taken to decrease the environmental impact of housing and space consumption are inadequate if owners do not change their construction practices and households do not actively change their housing behaviour. Most measures explored in this thesis, if implemented individually, succeed in reducing the rate of increase in space consumption but fail to reverse the upward trend. A more space-efficient allocation of dwellings to households proves to have a certain effect. However, only when combined with other measures, such as the densification of the existing building stock and a change in construction practices, a significant decrease of environmental impact is observed.

EPFL2022

Renewable Land: Planning the Evolution of Logistic Areas

Gloria Serra Coch

Land is the support of life and the generator of energy cycles in the planet, also being a finite resource. The first consequence of urban population growth and build environment expansion is land consumption. Present strategies reduce this expenditure, generally by attenuating dispersive growth, favouring compact city models and reusing built inventory. From current urban land, a noteworthy percentage is assigned for logistic use and this proportion is increasing as a consequence of delocalized economies. However, planning strategies seem to overlook these areas when addressing the mentioned issues. The common localization of these zones, well-connected and placed in the influence area of a city, gives them a high probability to be absorbed by the mixed-use urban tissue during the process of city growth. Planning urban logistic land considering its possible future conversion into mixed-use urban fabric becomes a pressing concern. The study analyses industrial areas that have been transformed into mixed-use urban tissue to, subsequently, stablishing a correlation between them and current logistic zones. In the case of logistic areas, special attention should be paid to transportation infrastructures, legislation and land-use organization, ecosystem preservation and mixed-use progressive introduction. The objective is to foster the planning of logistic land considering its potential future re-use and transformation into mixed-use urban tissue with low energy costs.

UNIV POLITECNICA CATALUNYA2021

The challenges of impact evaluation: Attempting to measure the effectiveness of community-based disaster risk management

Anthony Christopher Davison, Nicola Mary Banwell, Silvia Hostettler, Alfredo Rafael Kägi Trejo

Although disaster risk management is becoming increasingly important in development cooperation, there is still a lack of robust evidence regarding its effectiveness. Few studies based on a counterfactual have been conducted in the fields of disaster management and disaster risk reduction. This article describes a methodological approach to enabling more rigorous evidence-based decision-making in community-based disaster risk mitigation, and notably for assessing the degree to which it increases preparedness for the adverse effects of hazards in vulnerable communities. The effects of actions designed to reduce disaster-induced loss, damage, injuries, fatalities and resource degradation were evaluated at a Swiss and Honduran Red Cross’ intervention area in Honduras. Our results show that the intervention has had a significant positive effect in three important areas of resilience: knowledge and preparedness (e.g., existence of an early warning system); social cohesion (e.g., community institutions); and management of natural assets (e.g., firewood consumption). Our findings indicate that the intervention program has enhanced the capacities of treated communities to prepare for future hazards and to respond in case of an emergency at both household and community levels.

2020

EPFL2022