Environmental degradation is a widespread contemporary problem. It will be exacerbated by Greenhouse. The alteration of the land surface by humans is examined in terms of on-site impacts as well as off-site effects in other storages, notably rivers. Examples of bank erosion in the Hawkesbury-Nepean system are related to regime shifts, dams and dredging. Examples of environmental pollution by different forms of sewage disposal are given for Wollondilly Shire. It is suggested that much more relevant information is required to effect total catchment management. 相似文献
The analysis and interpretation of physical and limnological parameters combined with hydrochemical (major ions and stable
isotopes) analyses enabled us to evaluate the hydrogeological functioning and the hydrogeochemical evolution of groundwater
in two adjacent lakes related to a karstic aquifer (Archidona, southern Spain). Lake water, groundwater and the outflow from
a spring, were monitored periodically from 1998 to 1999 and sporadically from 2000 to 2006. The evolution of groundwater chemistry
from recharge (dolines) to discharge areas (spring) showed an increment of 20% in magnesium and 15% in sulphate, and such
higher increments were recorded for the water from the lakes, suggesting the existence of different hydrogeological paths.
A simple water budget model, together with morphological interpretation, suggests that groundwater discharge into the lakes
is of relative importance to the input into these systems. Finally, we believe that the development of a new typology for
hydro-morphological elements, by means of several hydrological factors and the assessment of pressures and impacts will be
useful for the correct management of these lakes and other semi-arid aquatic ecosystems. 相似文献
This paper introduces into the literature the concept of tactile space. In tactile space, forms of representational and non-representational knowledge are exchanged, resulting in the decentering of the subject/objective dichotomy as well as the senses. In doing this, tactile space helps to instill within individuals a greater sense of relationality with others and the environment, which leads to long lasting attitudinal and behavioral changes (versus the superficial changes provided by, say, financial dis/incentives). To help clarify the concept, two different cases are examined. The first example looks briefly at the Sunnyside Environmental School, located in Portland, Oregon (US). The purpose of this first case is to provide some real world flesh to the concept of tactile space. A more detailed conceptual discussion of tactile space takes place in the following section. Here, attention focuses on an in depth study of two cases of community supported agriculture in Iowa (US). The paper concludes by reflecting upon the challenges and opportunities that lie ahead as we further develop our understanding of tactile space and the relations, sensations, and non-representational knowledges it helps to bring forth. 相似文献
This article provides a counter-narrative to the dominant discourse of marginalization and criminalization of Ghana’s illegal gold miners (galamsey) by focusing on the contested mercury debate. We first examine the complex and multifaceted policy problem that underlies the current conflictual aspects in the small-scale mining sector, arguing that mercury use and contamination are key elements in the antigalamsey rhetoric. Second, we describe an interdisciplinary pilot study on human and environmental health that involved health personnel and illegal miners from two sites. Through participatory ranking and mapping activities, we explored participants’ understanding of mercury and other life hazards as well as causes and consequences of mercury contamination. We used chemical indicator strips to sample contaminated areas in collaboration with the miners. By drawing upon novel concepts from the environmental justice and ecohealth literature, we propose a political ecology of human and environmental health that advocates recognition of galamsey operators and their participation in learning opportunities as a first step out of the current impasse in the Ghanaian small-scale mining sector. 相似文献
Through a critique of existing regeneration literatures the paper points to the close relationship between regeneration and sustainable development. It suggests that the economic aspects of sustainable development have tended to dominate: leading to the neglect of nature in both regeneration and sustainable development, with regeneration having a principal focus on socio-economic issues in urban settings. To address these lacunae we suggest the need for a more environmentally sensitive regeneration theory. Using this approach the paper draws on recent in-depth research in three post-industrial coalfield areas where regeneration processes operate in the form of community forest projects. It provides a critical perspective on these regeneration processes, integrating theory with empirical data and highlighting how nature is drawn into broader economic and social processes of regeneration. In conclusion, using forestry initiatives as examples, we reflect on the conceptual dissonance apparent in regeneration theory and practice, and point to theoretical insights that could enable a more critical regeneration theory; more beneficial outcomes to regeneration processes; and an improved understanding of the relations between nature, capital and community in regeneration processes and sustainable development. 相似文献
Research into exposure to, and experience of, environmental risk that has an explicitly spatial focus can be broadly differentiated into two strands. The first strand focuses on the responses of communities of exposure (or the threat of exposure) to some form of environmental hazard and to the policies put in place by institutional actors to manage the hazard. The second strand addresses social inequalities in exposure to environmental hazards and seeks to correlate uneven spatial distributions of risk across different social groups. It is argued that both strands are limited by their respective understandings of space - and that the way in which vulnerable communities experience environmental risk and its management will be shaped significantly by the complex interactions of different spatialisations or constructions of space. We explore this process by examining accounts of local experience of the UK’s 2001 foot and mouth disease crisis and its management in terms of the interplay of two different spatialisations: socio-cultural marginality and political-economic peripherality. We trace the relationship between these cultural and political-economic spatialisations through an analysis of the discursive mobilisation of contrasting place rhetorics. We conclude that focusing on these rhetorics can enhance our understanding of the spatial processes which are constitutive of place identity and in turn mediate the experience of environmental risk and its management. 相似文献
The incineration of waste is a controversial issue marked by a history of opposition from community groups and environmentalists around the globe. Opponents, particularly in the USA, have frequently adopted a discourse of environmental justice to challenge the legitimacy of incineration. In line with these broad geographies of resistance recent proposals to introduce municipal solid waste incinerators in Ireland have sparked a series of opposition campaigns. However an examination of the discourses of resistance adopted by campaigners in one specific site of resistance, the Galway region on the west coast of Ireland, indicates that the vocabulary of environmental justice has not been publicly articulated. This paper investigates this absence of environmental justice in the language of opposition. The research reveals an interwoven set of contingent conditions that conspire to inhibit the adoption of environmental justice discourses in Ireland. However these conditions are not static and a combination of pressures, both within and beyond Ireland, are creating a dynamic context that could promote the emergence of environmental justice discourses in the future. 相似文献
With the development of mining of iron deposits in China, groundwater invasion and the impacts of groundwater drainage, such
as regional groundwater table lowering, overlapping cones of depression, subsidence, and water quality deterioration are environmental
problems which endanger mining production and human life. Effective prevention of water invasion or timely determination of
the mechanism of water bursting and rational design of drainage plans are the most urgent mining challenges. The mechanism
of water invasion and the environment impacts on the groundwater system of the Gaoyang Iron Mine, China were dealt with in
this paper. A systematical investigation of the hydrogeological conditions and monitoring of groundwater dynamics of the mine
were completed. Results show that the limestone of the middle Ordovician System constitutes the under floor of the iron deposit.
This limestone is the main source of water invasion into the mine. Groundwater dynamic equilibrium conditions are broken due
to mine drainage. Water invasion and drainage have caused a serious impact on the groundwater environment of the area. 相似文献
The 1998 project ECOPORT, “Towards A Sustainable Transport Network”, developed by the Valencia Port Authority (VPA), established the bases for implementing an Environmental Management System (EMS) in industrial harbours. The use of data and information shall always be required to develop an efficient EMS. The objective of the present research (INDAPORT) study is to propose a system of sustainable environmental management indicators to be used by any port authorities. All activities performed within a port area are analysed for any potential environmental impacts and risks.
An environmental analysis of port activities has been carried out with the objective of designing the indicators system. Twenty-one corresponding activities have been identified for large industrial ports. Subsequently, the same methodology developed to date will be later applied to other Spanish and European ports. The study has been developed by using an original system and a methodology, which simultaneously use stage diagrams and systemic models (material and energy flow charts). Multi-criteria analysis techniques were used to evaluate potential impacts (identification of factors and evaluation of impacts). 相似文献