天津市地表水水质变化趋势及对策

水资源短缺和水体严重污染,是天津市的主要水环境问题。通过对天津市主要水体水质变化趋势及产生原因分析,揭示天津地区水污染的发生规律,并提出了改善水环境质量的相应对策。     

天津市地下水利用中的环境问题及其对策

本文对天津市地下水资源现状和存在的问题进行了系统分析,详细论述了天津市地下水资源开发利用过程中所发生的环境问题及其产生的影响,从水资源管理体制,污染控制,水价,调蓄蓄能等方面,针对性地提出了解决对策和措施,并对天津短缺的水资源的开发利用和环境生态协调发展,进行研究和探讨。     

天津市工业废水污染控制问题的研究

本文对天津市的水环境质量现状和存在的主要环境问题进行了系统分析,根据天津市污染防治长期规划,从建设工业水污染防治体系的目标出发,提出了解决城市工业废水污染控制问题的对策,方法和相应措施。并针对水资源严重匮乏地区的经济与环境协调发展问题,进行了研究和探讨。     

淡化海水在铸铁管道中输送的可行性探讨

天津市是中国水资源重度缺乏地区,而随着天津滨海新区纳人国家发展战略,对水资源的需求也将迅速增大.用传统的铸铁管道输送淡化海水,由于淡化海水与自来水的化学稳定性差别较大,势必会对管道带来不同程度的影响,有可能对管网水质造成二次污染.所以研究淡化海水如何在铸铁管道中输送成为了一个新的课题.     

天津市创建国家环境保护模范城市的战略思考

根据天津市“十五”计划纲要提出的“实施可持续发展战略,建设生态城市”的要求,在大量调查研究的基础上,从天津的实际出发,本着与时俱进的精神,创造性地提出天津市生态城市建设两步走,把创建国家环境保护模范城市作为生态城市建设的基础和初级阶段的战略构想,文章深入地阐述了天津市“创模”的必要性,迫切性和得大意义。根据国家的标准,客观地,实事求是地分析了天津“创模”的基本条件,存在的突出问题,努力方向。提出了天津“创模”的目标任务,措施和建议。     

面向可持续发展的水资源管理问题的探讨

可持续发展战略已引起世界各国的普遍重视和关注。本文从可持续发展的角度，对水资源的状况和水资源管理政策进行了分析，提出了二十一世纪面向可持续发展的水资源管理原则、管理模式和对策。论文的研究对改进我国的水资源管理具有重要意义。     

基于物质流分析的天津市资源生产力

在物质流分析的基础上,根据资源生产力指标,对天津市1996-2007年间的资源生产力进行了分析。结果表明:天津市的资源生产力总体呈上升趋势,总物质资源生产力由1996年的2 293.76元/t上升到2007年的4896.12元/t,增长到2.13倍,年平均递增236.58元/t。在劳动资源生产力、土地资源生产力、水资源生产力、能源资源生产力、进出口物质资源生产力中,劳动资源生产力年平均递增最高,为0.58万元/人,农业水资源生产力最低,年平均递增仅为0.7元/t。随后,应用IPAT模型分析了环境负荷(或资源消耗)与GDP之间的关系,天津市的环境负荷(或资源消耗)随GDP的增长而上升,实现"脱钩"至少应使资源生产力提高2.2倍以上。最后,针对天津市资源生产力分析结果,提出了提高资源生产力的相应建议。     

天津城市化发展趋向与水资源可持续利用

分析了新时期天津城市化发展趋向，从城市人口增长、城市工业结构、城市化进程等诸方面，探讨了城市化进程与水资源利用之间的关系，提出了适应城市化发展的水资源可持续利用战略。     

改善生态环境规划的战略环境评价

论述了对改善生态环境规划进行战略环境评价的重要性和评价重点,结合天津市碧水工程实施方案战略环境评价实例,介绍了以总量控制和环境效益为重点的评价过程和评价方法。     

天津市蓟县经济开发区环境影响评价与规划

以天津市蓟县经济开发区区域环境质量现状调查和评价为基础,依据环保法规和标准,预测了区域环境的承载能力及区域开发建设对环境的影响,提出削减各种不利影响的措施和控制对策。通过对规化方案的优化分析,提出出有利于区域社会、经济与环境协调发展的战略对策及规划总体方案。     

水资源供需平衡动态模拟分析方法

本文根据多水源供水系统的特点，从优化利用水资源，改善与保护水环境质量出发，建立限水资源供需平衡的动态分析模型，该模型较为客观地反映了需水量与可供水量之间的时空矛盾，可为供水系统的运行管理提供较为精确的决策依据。模型已在台山市区环境规划中得到了应用，效果良好。     

天津市水环境功能区划分方案及水质标准的确定

本文在天津市原水环境功能区划分的基础上,根据历史,现状,近期和远期水环境功能分析和水环境质量现状评价结果,在保证主要河道水环境功能的前提下,依照水环境质量现状和污染源排放情况以及《海河流域水污染防治规划》确定的上游河流功能区水质保护目标,确定天津市属河道,水库水环境功能区水质标准。     

天津市水环境保护的战略思考

本文从天津市水环境保护的战略出发，系统地论述了水环境保护的目标管理，水环境保护规划，总量和浓度相结合的控制方式，集中与分散相结合的综合治理途径，促进生态平衡的综合性保护措施等一系列管理思路和方法。     

Wasser – elementare und strategische Ressource des 21. Jahrhunderts

Background and aim The combination of increasing freshwater demand, limited or regionally decreasing water resources as a consequence of the climate change, and an increasing qualitative burden, lead more and more to the question as to whether the population of particular regions, whole continents or even the entire world will be confronted with a shortage of available water resources in the future. Discussion The resident-specific regenerative water resources of the continents are being quantitatively rated on the basis of an analysis of the three globally relevant water cycles (the marine one, the terrestrial one and the one which is linking both of them). The available amount of water is limited by technical-economical restrictions. This amount is compared with human demands, and the outstanding relevance of the production of biomass (to be used as food, animal feed, primary product or energy carrier) regarding the worldwide water need is discussed. Results From a global point of view there is no water shortage. Scarcities occur only regionally or seasonally. A large portion of the water employed worldwide is used for the production of biomass. Therefore, this sector provides a considerable key to the strategic handling of water. The so-called ‘green water’ is crucial for the production of biomass. However, the common way of balancing water supply and demand often overlooks the importance of the green water on the supply side and thus indicates shortages which de facto do not exist. As to the whole usage of water by humans, in our opinion, the stated quantity of freshwater which is being regenerated every year all over the world has to be corrected considerably. The figure of 40,000?km³ which is often quoted in current literature has to be raised to more than 100,000?km³. Conclusions and perspectives Water shortage is often not a result of limited resources or technologies but is a consequence of missing awareness, failing political volition or insufficient socio-economic potentials. On the basis of a comprehensive water supply/demand balance, which includes all forms of water usage, national and international potentials for the fulfilment of the demand should be analysed in order to be able to develop necessary supply scenarios.     

空气污染预报污染物排放清单数据库的研究与建立

介绍了天津市空气污染预报污染源数据库建立的目的和方法，该数据库不同于常规的污染源数据库，要按模型需要对污染源信息进行了模式化处理，研究结果表明：该数据库应用于空气污染数值预报系统，预报结果达到课题设计的精度要求。     

天津市陆源污染物允许排海量的研究

渤海近岸海域污染已是约环渤海地区社会经济的发展。本文对配合天津市主要污染物总量控制,对天津市陆源主要污染物允许排海量的功能区划原则,水环境主要污染物,总量,主要污染物允许排海量的数学模型,陆源主要污染物允许排海量的计算依据等进行了阐述,同时对主要排污口主要污染物允许排海量及其消减量进行了计算。     

Oligopoly meets oligopsony: The case of permits

This paper derives market equilibria (in demand functions and in bidding strategies) between oligopolists and oligopsonists in a market with intermediates and no competition in final markets. To the best of my knowledge, this theme has not been explored, despite two observations: Firstly, the commonly applied framework of non-competitive and competitive fringe firms has implausible properties for the limit of purely strategic players. Secondly, real world cases correspond at least potentially to such strategic interactions, e.g., non-competitive players selling and buying permits (CO₂ and SO₂). The major implications are that these non-competitive markets are characterized by a kind of double marginalization (on the demand and the supply side) resulting in too little trade and wrong price signals.     

Biofuels and agriculture: a past perspective and uncertain future

The US corn ethanol industry has grown from virtually nothing in the early 1980s to over 14 billion gallons in 2011. Subsidies have been an important impetus for the industry, and they have existed in one form or another throughout the life of the industry. This paper provides (1) a brief look at the history of the linkages between energy and agriculture and how they have changed with biofuels; (2) a review of some of the major impacts of the US corn ethanol program; and (3) analysis of prospective impacts of cellulosic biofuels. There is no doubt that biofuels have brought about a new era for global agriculture. Historically, the prices of agricultural and energy products moved in response to supply and demand factors relevant to each market, but moved largely independent of one another. Corn ethanol has changed that, and today there is a link between crude oil and corn that is driven by the demand side. Since agricultural commodity prices are linked both on the demand and supply sides, the corn–crude oil link spills over to other agricultural commodities as well. Development of cellulosic biofuels has been much slower than hoped. The feedstocks are more expensive than initially believed. Conversion technologies remain uncertain and expensive. There are many uncertainties through the cellulosic supply chain, and government policy remains uncertain as well. Thus, the future of the cellulosic biofuels industry is, at this point, an open question.