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1.
Natural resources and raw materials such as metals and minerals are often taken for granted in today’s society. Without them, the offerings of an enormous variety of modern conveniences, including computers and mobile phones, would not be possible. The production of these everyday items depends on a secure, sustainable, and reliable supply of critical raw materials. In addition, product development also requires new hybrid materials when targeting lightweight structures, etc. However, the mandatory recyclability of new products or materials is not obligatory or even prevailing practice in present manufacturing business. Therefore, the main research question in this article is: “how to solve the challenge of recycling in industrial system?” In this article, a comprehensive approach to recycling based on the findings of research projects is presented. Simplified, this involves moving the challenge from the end of the product’s life cycle to the beginning, to the design or even to material development phases. Life cycle and system thinking and material know-how in the design phase are found to be essential elements of a new approach to recycling. This approach stems from the material development and market economy perspectives. Furthermore, the vulnerability of the industrial system to create uncertainty to recycling is also demonstrated.  相似文献   

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3.
退耕还林工程费用有效性的影响因素分析   总被引:3,自引:0,他引:3  
费用有效性评价是工程评价的重要方面。从政策制定和执行角度对退耕还林的费用有效性及其影响因素进行分析。具有重要的意义。利用实地调研数据和相关统计数据.从退耕地选择和造林入手对退耕还林工程实施的费用有效性殛其影响因素进行考察.并尝试对这些因素的作用机制进行了分析。研究指出由于缺乏长期的和有效的退耕还林规划以及相关政策措施的缺失.使得退耕还林费用有效性的损失在微观层面和宏观层面广泛存在。而各利益主体的利益不相害性是影响工程有效实施的基本矛盾。有必要在遇耕还林中确立明确的规划、清晰的退耕地选择标准。建立和完善管理信息系统和及时有效的反馈和控制机制。构建协调多方利益的长期稳定的生态补偿机制。从而改进退耕还林工程的费用有效性。  相似文献   

4.
The transparency of the forest canopy of lichen-green moss pine forests was estimated for different numbers of sectors of the celestial hemisphere. The ecological contents of these estimations are discussed. The dominance frequencies of species of the herbaceous-dwarf shrub and moss-lichen layers were analyzed. Based on the results of this analysis, it was concluded that the transparency estimated for the zenith sector alone better reflects the influence of leaf debris and the rainfall interception by the crowns. If the transparency was estimated taking into account all sectors of the celestial hemisphere, the effect of community disturbance increased and the redistribution of rainfall was masked.  相似文献   

5.
Principles of the theory of the ecological mechanism of water self-purification based on multiple functions of the biota in freshwater and marine ecosystems are formulated. In developing this theory, the results of the author's experiments with filtering hydrobionts have been used. These results indicate that the water self-purification mechanism is vulnerable to the impact of some pollutants and, in particular, surfactants. Conclusions drawn on the basis of the theory have practical significance for biodiversity conservation and for the sustainable use of the biological resources of aquatic ecosystems.  相似文献   

6.
The Royal Decree of 20th July has entrusted the Federal Agency for Nuclear Control (FANC) with the task of controlling the territorial radioactivity and the doses received by the population. Within this agenda, a monitoring programme has been developed over many years, in order to follow the main potential exposure pathways of the population. In practice, several potential vectors of contamination are controlled: air (and rain), surface water (including sediments and biota), soils around nuclear installations, food chain, drinking water etc. To carry out such work, the FANC has collaborated with public or private reputable organisations: The Centre of Nuclear Energy Studies of Mol, The National Institute of Radionuclides of Fleurus, and The Louis Pasteur Public Health Institute of Brussels. A synthesis of this monitoring programme will be presented and the most important deductions will be pointed out. For many years, the tendency has been for tighter control of artificial and natural radioactivity in the environment. This has been achieved by increasingly stringent regulations, regarding environmental monitoring efforts, from international organisations (EC, OSPAR, IAEA). In this context, the FANC in Belgium, is involved in a process that will lead to the adaptation of the Belgian monitoring programme. Different aspects of these adaptations and of their consequences will be presented for illustrative purposes.  相似文献   

7.
凤凰城旅游景区转让后的效应评价   总被引:7,自引:0,他引:7  
在我国经济市场化改革的大背景下,转让景区经营权、实行企业化运作成为一些风景名胜区经营管理改革过程中的一种制度创新模式。地处西部大开发战略图中的湘西凤凰县由于在旅游开发中受到了资金缺口和管理瓶颈的双重制约,于2001年底将其辖域内的八大景区(点)的50年经营权转让给了湖南黄龙洞投资股份有限公司。景区经营权转让是一个十分复杂而敏感的话题。本文避开关于景区经营权转让的各种是非争论,基于对旅游地社区各利益主体以及旅游者的实地调查和访谈记录分析,对凤凰景区企业化运作三年来的绩效与影响作了较为客观的评估,并就如何完善景区企业化运作模式、规避经营管理风险和负面影响等提出了相关理论思考和政策建议。  相似文献   

8.
This paper analyzes the patterns of the formation of the aquatic and semiaquatic bird species population under the conditions of the altitudinal zonality of the Putorana Plateau. The population density and abundance of a number of background species was ascertained to decrease from the subalpine belt towards the forest and alpine belt. The bird population density in all the considered aquatic and semiaquatic habitats was revealed to change in a rather narrow range of values: the maximal population density indicator in aquatic and semiaquatic habitats is only 1.9 times higher than the minimal indicator. In the mountainous Subarctic region with a radial macrosymmetry, the spatial dynamics of abundance has a concentrically centrifugal nature in many aquatic and semiaquatic bird species.  相似文献   

9.
环境规制相对力度变化对FDI的影响分析   总被引:1,自引:0,他引:1  
本文利用1995-2007年间41个投资来源国和地区的数据,把41个投资来源国和地区分为25个发达国家与16个发展中国家(地区)两类,重点研究中国环境规制相对力度的变化对FDI的影响,并考察了借贷成本、双边贸易关系、经济发展水平的相似性等影响因素,运用面板数据进行中国环境规制相对力度的变化对FDI的影响的实证检验,为中国选择FDI的类型提供理论依据.本文的研究结论表明;中国——相对于投资来源国——环境规制相对力度越严格,来自发展中国家(地区)的FDI将减少;而来自发达国家的FDI并不受影响.产生这一结果的原因在于,不同外商直接投资来源国企业环保技术水平的差异导致其对环境规制的敏感程度不同.在上述结论的基础上,论文对中国选择FDI的类型从外资的来源结构、产业结构、环境技术三个方面提出了相应的政策建议.  相似文献   

10.
A methodology of substantiating the ecological risk of technogenic soil pollution has been described according to the results of bioindication using microfungal communities. At the first state, the values of the factors under which the frequency of each species is maximal were estimated using ordination methods. The statistical distribution of the species sensitivity was simulated according to these data. The methodology was illustrated using the results of analysis of the toxicity of soil samples from uranium mine dumps (the village of Kadzhi-Sai, Kyrgyzstan). The preliminary estimates of the critical values of six soil pollution indices that provide the defined allowable probability of the ecological risk have been given.  相似文献   

11.
外空具有重要资源价值。各国开发和利用太空资源的活动已经对外空环境造成了不利的影响。国际问通过签订国际条约等虽然已经建立了一些太空法律.但在外空资源的可持续利用和外空环境保护方面的直接规定却不系统。为了实现人类对太空资源的可持续利用和对外空环境的保护。在太空资源和环境立法方面应该订立保护外空资源与环境的专门性国际条约、实行外空活动“准入制度”、建立外空夭体资源的国际开发制度。  相似文献   

12.
Interpreting and applying the concept of sustainable development is increasingly viewed as being the way to promulgate just and practicable economic, environmental and social policy. It is thus important that there be increased public and political awareness concerning the origins of economic theory, and its early relationship to sustainability concepts. While the term 'sustainable development' was popularised by the World Commission on Environment and Development report Our Common Future in 1987, it is generally recognised that notions of sustainability were promoted in `limits to growth' and 'green' discourses in the early 1970s (Meadows et al.: 1974, The Limits to Growth: A Report for the Club of Rome, Potomac Associates and Pan Books, London and Sydney). However, there is little acknowledgement of the way in which nineteenth century intellectuals, from a range of disciplines, conceptualised the importance of balancing economic, social and environmental sustainability in their quest for justice and the conservation of nature.There was a considerable exchange of ideas on `political economy' and nature across Europe, and later the Americas, from the middle of the eighteenth century. This discourse reached its intellectual peak in the nineteenth century. During that era there was a proliferation of literature that was aimed at improving the human condition and recognising humanity's dependence upon nature. In Europe and the USA the participants in the debate included Cantillon, Quesnay, Condorcet, Galiani, Von Hayek, Marx and George. Due to the breadth of this influential body of work, we focus here on the British Victorian thinkers such as Darwin, Malthus, Martineau and Mill. These thinkers influenced each other in developing their theories and ideas in science, politics, economics and philosophy, and were influenced in turn by an earlier generation of intellectuals, such as Adam Smith. For the Victorian thinkers, conserving nature while trying to improve the distribution of wealth was a not a paradox, but a moral duty, and for them Smith's `rational' pursuit of self-interest could only be followed if it did not interfere with 'the rules of justice'. We argue that the manner in which these thinkers conceptualised their theories and ideas represents the nineteenth century origins of sustainability concepts.  相似文献   

13.
产业生态系统稳定性研究述评   总被引:30,自引:0,他引:30  
产业生态系统(IES)作为可持续发展的重要实践工具,在国内外得到快速推进并取得显着成效。但由于IES独特的生态化产业链接属性和成长环境。造成大量不稳定问题逐步浮现并且已经成为影响产业生态系统取得成功的重要障碍。以Cape Chades、Kahundborg等生态工业园发展为案例。对出现稳定性问题的IES进行回顾。然后,通过生态系统的稳定性内涵的研究,探讨IES稳定性的相关概念。该文的主要研究成果集中在通过大量国内外文献研究所得到的17个IES稳定性的可能影响因素。通过对这些日素的研究,把它们划分为结构、技术、外部三个纬度,其中结构性影响因素包括:地理位置、成员距离、核心组员、生态产业链长度、行业多样性、相互依赖、系统关联度等7个;技术性影响因素包括:技术充足、技术革新、信息交换平台、技术机密壁垒等4个;外部性影响因素包括:政府支持、市场变动、新能源新材料、公众压力、法律制度、经济支持等6个。最后展望未来相关研究的发展趋势与可能的突破点。指出可以通过在国内开展大样本IES的统计调查。通过研究这些影响因素与稳定性之间的数量相关关系,确认其中正在突出影响我国当前产业生态系统稳定发展的因素。  相似文献   

14.
Since the 1990s, the Yellow River stream has been temporarily interrupted for several years, which affects the development of society, the economy and human life, limits the economic potential of the drainage areas, and especially causes great harm to regions on the lower reaches. Based on the analysis of the relationship between the development of society and economy and water scarcity, the author thinks it is necessary to optimize and adjust the industrial structure that has extravagantly consumed enormous amounts of water, and to develop ecological agriculture, industry and tourism which are balanced with the ecological environment. Finally, the author puts forward several pieces of advice and countermeasures about how to build the economic systems by which water can be used economically.  相似文献   

15.
循环经济立法研究--模式选择与范围限制   总被引:23,自引:0,他引:23  
发展循环经济是我国未来社会可持续发展的最佳模式选择,法律应该保障和促进循环的形成和发展。本文分析了循环经济的内涵、特征及其法治化,并对国外循环经济立法作了系统分类,在分析了我国循环经济立法应考量的因素、指导思想和限制条件的基础上,提出我国应选择的循环经济立法模式以及立法范围的限制。  相似文献   

16.
Abstract

Since the 1990s, the Yellow River stream has been temporarily interrupted for several years, which affects the development of society, the economy and human life, limits the economic potential of the drainage areas, and especially causes great harm to regions on the lower reaches. Based on the analysis of the relationship between the development of society and economy and water scarcity, the author thinks it is necessary to optimize and adjust the industrial structure that has extravagantly consumed enormous amounts of water, and to develop ecological agriculture, industry and tourism which are balanced with the ecological environment. Finally, the author puts forward several pieces of advice and countermeasures about how to build the economic systems by which water can be used economically.  相似文献   

17.
Abstract

Nowadays, the disparity of the basic pension in local regions of China can be described as follows: the low level of the unification of the basic pension systems, the large disparity of the level of the basic pension, and unfairness of the enterprises' payment for the basic pension in different local regions in China. These have already brought many negative influences, which have greatly held back the development of the society and national economy. We should build the basic pension system in all local regions of China as a whole, which can cover all people and decrease the disparity in different local regions in China.  相似文献   

18.
With the implementation of reform and opening-up, the overall economy of China has made brilliant achievements; meanwhile, however, the economic disparity has been enlarging among some regions, and between the city and the countryside. The existence and evolution of this kind of economic disparity is concerned with social stability, sustainable development and the construction of harmonious society, which has gradually become the hotspot in social economic development. The West Coast of the Strait (WCS) located in southeast littoral areas is adjacent to the Pearl and Yangtze River Delta in the south and north and faces Taiwan Province in the east. The stability and development of this region has vital political and economic meaning in the social economic development of our country. It has important theoretical meaning and practical value to research the form, characteristics and evolution of regional economic disparity in the WCS. Based on insightful analysis on existing study results on the WCS, the paper defines the connotation and extension. By a series of absolute and comparative relative evaluation indexes and taking the WCS since 1992 as the study object, the paper makes analysis on different scales including three regions, four regions, 20 cities and 152 counties, quantitatively evaluates the level, characteristics and evolution of the regional economic disparity and compares the regional economic disparity on different scales. The main conclusions are as follows: the variation trend of the absolute disparity of the whole region is obvious and stable, which has presented an inflating trend; the comparative variation trend on a large scale has waved, The comparative disparity of the three regions increased annually from 1992 to around 2000, which had a decreasing trend from around 2000 to 2005; the comparative variation trend on a small scale was not stable, which showed an annual increase of four regions, 20 cities and 152 counties from 1992 to around 2003 and a decrease from around 2003 to 2005; the  相似文献   

19.
The immune status of basically healthy personnel of OAO Uralkalii and OAO Sil'vinit was studied for three years (1998–2000) to assess the effect of the workplace environment on the parameters of the immune system. All probands were divided into groups depending on their exposure to salts or halite waste. Annual examination did not reveal any statistically significant differences between the parameters of immunograms in the groups studied. The parameters of the humoral component of the immune system of potassium-industry workers manifested a stable tendency toward normalization, irrespective of whether or not these persons were exposed to salts, and the annual contents of T and B lymphocytes and phagocytizing cells were stable within the regional standards.  相似文献   

20.
论可持续发展观的贯彻与水资源论证制度的完善   总被引:1,自引:0,他引:1  
可持续发展理念要求以环境资源承载力为依据规范人们开发、利用自然资源的行为。水资源论证制度是贯彻、实施可持续发展理念的良好制度形式,对于促进经济社会可持续发展意义重大,但我国现行立法中规定的水资源论证制度还不完善,影响了制度作用的充分发挥。完善相关立法,提高水资源论证制度的法律地位,是在水资源管理与保护方面贯彻可持续发展要求的关键任务。  相似文献   

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