江苏省地质遗迹纵观     

周晓丹  赵剑畏等 《江苏地质》2001,25(4):238-245

首次对全省地质遗迹进行了系统调查，筛选出具有代表性的地质遗迹97个，归为16种类型。在此基础上，进行科学的评价，确定省内地质遗迹的保护级别。  相似文献   

湖南省农用土地的环境地质问题     

罗伟奇 《湖南地质》2001,20(1):41-42,46

湖南省农用土地的环境地质问题主要有两种类型，一种是受成土母岩的物理性状和化学组分的影响而产生的原生环境地质问题，另一种是受人类工程一经济活动及外动力作用影响而形成的次生环境地质问题，本文就其形成机制作了探讨，并结合农业产提出了可操作的防治措施。  相似文献   

A critique of development and conservation policies in environmentally sensitive regions in Brazil     

Stefania Abakerli 《Geoforum》2001,32(4)

More than a strategy for environmental conservation, protected area paradigm has represented a specific conception of nature–society relationship. Originated in a context of capitalist consolidation, rapid urbanisation and frontier development in the US, this paradigm has given rise to a ‘politically viable rationale' in which utilitarian use of natural resources by tourism development would ensure nature preservation. This political rationality has deeply influenced environmental policies in developing countries, fostering a paradoxical model in the history of nature preservation. It also has brought into play diverse interests that have shifted patterns of local nature–society interaction, configuring a complex politicised environment. Established in ‘isolated' regions, protected areas have been implemented often by top–down approaches, disrupting resident peoples' livelihoods strategies through conflicts over the control of natural resources. Understanding the implications of development and conservation policies on resident peoples' livelihoods may represent a starting point for an integrated developmental conservation policy towards the promotion of sustainable livelihoods in environmentally sensitive regions in developing countries. These issues are analysed in the region of the Lençois Maranhenses National Park in Brazil. This paper argues that the context facing the region reveals a standardised conservationist paradigm marked by the absence of wider ecological criteria informing nature protection and a disregard for the strengthening of sustainability in existent socio-economic dynamics. The regional development and conservation policies have not only promoted tensions between resident peoples' livelihoods and the protected area paradigm, but also reinforced the legitimisation of social exclusion and environmental disruption under the prevalent rhetoric of nature protection and tourism development.  相似文献   

Barium and radium discharged from coal mines in the Upper Silesia, Poland   总被引：1，自引：1，他引：1  

Irena Pluta 《Environmental Geology》2001,40(3):345-348

 Waters discharged from coal mines in the Upper Silesia in Poland cause contamination of rivers and their sediments. Saline waters discharged from coal mines of the southern region contain elevated barium and radium. The discharge of these elements can be reduced by treating these waters with sulphates in mine workings. Sources of sulphate used in treatments include gypsum, anhydrite and industrial wastes such as: fly ash, slags and flotation tailings. Gypsum and anhydrite are used in the coal mine workings as components of the fire protection walls. Industrial wastes from power plants are stored in the mine workings as fire- and methane-protection agents. Sulphates precipitate barium and radium from saline waters inflowing into the mine workings. The waters can be treated by flowing them through old mine workings. In this case, the source of sulphates is the natural oxidation of pyrite. Mining activities and the natural process of desulphurisation of the Carboniferous rocks reduce the amount of barium and radium that is discharged in the southern region of Upper Silesia. The processes for reducing the environmental impact of toxic discharges from the mines should be monitored. Received: 3 July 1997 · Accepted: 27 March 2000  相似文献   

Protection areas of the São Pedro do Sul Spa, Portugal     

L. M. Ferreira Gomes  F. J. Afonso De Albuquerque  H. Fresco 《Engineering Geology》2001,60(1-4):341-345

This paper presents a case study of the protection areas of one of the Portugal's most important spas. According to its chemical composition this thermal mineral water is rich in bicarbonate, sodium, carbonate, fluor and sulfate. The therapeutic indications are mainly illnesses related to rheumatism and respiratory system. As a complement the thermal mineral water is also used for geothermal purposes, as in the heating of greenhouses for the production of Bananas and Ananas. The study presents geological and hydrogeological characterization of the area and its vulnerability to pollution and the physical and chemical characterization of the thermal mineral water. Finally, in accordance with the Portuguese legislation, the protection areas are defined: for immediate, intermediate and distant zones. The criteria and other aspects that led to their definition are also presented.  相似文献   

Abandoned mines drainage: impact assessment and mitigation of discharges from coal mines in the UK   总被引：1，自引：0，他引：1  

S. B. Banks  D. Banks   《Engineering Geology》2001,60(1-4):31-37

The UK has a legacy of pollution caused by discharges from abandoned coal mines, with the potential for further pollution by new discharges as groundwaters continue to rebound to their natural levels. In 1995, the Coal Authority initiated a scoping study of 30 gravity discharges from abandoned coal mines in England and Scotland. Mining information, geological information and water quality data were collated and interpreted in order to allow a preliminary assessment of the source and nature of each of the discharges. An assessment of the potential for remediation was made on the basis of the feasibility and relative costs of alternative remediation measures. Environmental impacts of the discharges and of the proposed remediation schemes were also assessed. The results, together with previous Coal Authority studies of discharges in Wales, were used by the Coal Authority, in collaboration with the former National Rivers Authority and the former Forth and Clyde River Purification Boards, to rank discharge sites in order of priority for remediation.  相似文献   

环境质量的矿物标识体系研究现状及意义     

贾建业  汤艳杰 《热带地理》2001,21(3):270-275

环境质量的好坏直接关系到人类的生存问题，环境质量评价的科学性是有效治理环境和保护人体健康的前提。天然矿物在形成和变化的整个过程中，不同时间和空间上的环境演变都使矿物的特征发生相应改变，从而成为环境演变信息的载体。对天然矿物的微形貌、微结构、化学组成和成因产状等方面特征与环境关系的研究，可以揭示记录在矿物中的环境演变信息。这是环境矿物学领域中目前较为活跃的研究内容之一。  相似文献   

Convergence or divergence?: Status and prospects for US climate strategy     

Atle Christer Christiansen 《Climate Policy》2003,3(4):343-358

The objective of this paper is to assess recent developments and prospects for future changes in United States (US) climate strategy. In doing so, the paper explores some of the key factors that have shaped strategies and policies to date, distinguishing between factors related to institutional and governance structures, linkages between science and policy, energy technology and the role of interest groups. Against this background, the paper attempts to explore future development paths for US climate policy. More specifically, the paper assesses opportunities for policy changes compared to the preferences of the current administration, and the prospects for future linkages between US and international climate change strategies. In brief, the paper argues that substantial changes are unlikely to take place in the near to medium term, leaving open, however, the possibility of wide-ranging changes in domestic politics or major incidents that could facilitate a shift in the perceived need for near-term action.  相似文献   

胶州湾大肠菌群丰度变化及对环境污染的指示     

董逸  刘敏  武洪庆  张翠霞  张文燕  于莹  丰美萍  徐剑虹  肖天 《海洋与湖沼》2011,42(5):684-689

采用MPN计数法对胶州湾大肠菌群丰度进行7年（84个月）连续监测,结果表明,大肠菌群丰度的周年变化明显,全年最高丰度与最低丰度相差约2.2倍。胶州湾大肠菌群丰度自2005—2009年明显下降,降幅达67%,说明胶州湾环境质量有所好转。研究还发现大肠菌群丰度变化具有明显的区域特征,河口区最高,湾内区最低,差异近11倍。大...  相似文献   

An overview of cold-water coral protection on the high seas: The Hatton bank (NE Atlantic)—A case study     

P. Durán Muñoz  M. Sayago-Gil 《Marine Policy》2011

The present paper provides an overview of cold-water corals protection in the Hatton Bank deep-water fisheries through the implementation of the United Nations General Assembly resolution 61/105. The methodology and scientific evidence used to propose protection of cold-water coral ecosystems in the high seas (∼16,000 km²) are briefly summarised. The role of international agents and importance of interdisciplinary research for making management decisions are furthermore described. Implementation was slow because (i) of scarce initial scientific knowledge, (ii) research on the high seas was difficult and expensive, (iii) there were several international interests at stake, (iv) agreement from a number of agents was needed, and (v) international advisory and decision making processes were quite slow. Some lessons learned are also discussed since these may help to increase protection efficiency of deep-sea vulnerable marine ecosystems in the high seas.  相似文献