Industry Response to the Challenge of Sustainability: The Case of the Canadian Nonferrous Mining Sector

/ The paper investigates how the Canadian nonferrous sector is tackling the challenge of sustainable development. Although there is no consensus as to what sustainable development means in practice for management in the sector, at least three dimensions must be taken into account: (1) metals are recyclable, the availability of this resource is not a concern for the foreseeable future; (2) the need to minimize environmental impacts of metals exploration, extraction, transformation, consumption, and recycling; and (3) production activities should not be socially or culturally disruptive. The nonferrous mining industry faces several environmental problems. Some of the most significant are acid mine drainage, sulfur emissions, recycling, and metals toxicity. The industry has developed a number of responses to address these specific concerns as well as other more general challenges. Six strategies are described and analyzed: (1) research and development, (2) an effort of consensus building among stakeholders known as the Whitehorse Mining Initiative, (3) international networking, (4) active involvement in the development of environmental management standards, (5) management reorganization and (6) voluntary agreements. The importance of external factors in the shaping of corporate environmental management practices is discussed, in particular the role of government. Progress has been achieved in three areas: (1) managerial practices and organization, (2) reducing the impacts of ongoing operations and (3) minimizing future liabilities, but two significant fields of conflict remain, namely mining in wilderness areas and projects on aboriginal lands.KEY WORDS: Canada; Environmental management; Minerals industry; Nonferrous metals; Sustainable development; Whitehorse Mining Initiative     

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城市污水回用于农业的技术经济分析——以以色列农业灌溉为例

城市污水回用于农业是污水资源化的有效途径。论述了污水灌溉对农业和环境的影响 ,并以以色列为例对污水回用于农业进行了经济效益分析 ,同时介绍了决定用水组成、回用水质以及农作物的组成等的优化模型     

论环境保护与中国的可持续发展

可持续发展源于环境保护。本文首先介绍了可持续发展的观点、它所体现的基本原则和含义 ,接着又根据我国面临的环境问题提出了应采取的对策。最后阐述了可持续发展是中国的必然选择。     

西藏达机翁蛇绿岩的岩石地球化学特征及其构造环境

在对西藏雅鲁藏布板块缝合线西段北亚带达机翁蛇绿岩的地质构造、岩石组合等进行野外考察的基础上，首次对该蛇绿岩的主量元素、微量元素、REE及Sr、Pb、Nd同位素进行了较系统的测试分析和综合研究，并由此探讨了该蛇绿岩的构造环境。提出该蛇绿岩为新特提斯东段岛海格局中的岛派成国，为已消亡的中生代新特提斯洋岩石圈的残片。     

可持续发展指标体系研究进展

文章对于可持续发展指标体系这一国际上可持续发展研究的热点，从国家层次到地方层次，指标集和高度合并的指数货币化方法及非货币化等方面，详细分析国外可持续发展指标体系的研究进展。     

Agro-ecological engineering in China: a way towards sustainableagriculture

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