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131.
孙立广  谢周清 《环境化学》1995,14(4):311-316
采用国家二级标准(0.15mg.m^-3)作为南方中小城市的环境标准值,硫品位标准应控制在1.32%以下。对比南方各中小城市1987年使用的煤硫品位,在98个城市中,有44个城市符合标准,另有54个城市应控制高硫煤使用量或应用脱硫技术,以减少大气中SO2浓度。  相似文献   
132.
为了更好地协调乌鲁木齐城市群内部环境、经济的可持续发展,采用2011—2013年乌鲁木齐市、阜康市、五家渠市、昌吉市、石河子市5个城市的API日数据、日气象数据、PM10、SO2、NO2日均浓度值,对比分析大气污染特征,首要污染物及其变化趋势,再结合经济因素、气象因素、城市群内部之间相互影响等讨论防止空气污染的措施。  相似文献   
133.
城镇生活垃圾优化处理技术研究   总被引:2,自引:0,他引:2  
刘大义  张扣 《环境工程》2005,23(3):57-59
简述了生活垃圾处理技术现状,提出了生活垃圾优化处理技术方案,并与现行技术进行了对比。工程实例表明该技术处理效果好,值得推广。  相似文献   
134.
Resource-based cities (RBC) have made momentous contributions to urbanization in China. However, as natural resources are exhausted, RBC are facing an enormous challenge. In this paper we put forward a resource-based city sustainability index (RCSI) and a resource-based city coordination index (RCCI), including environmental, social, and economic dimensions, adopted three weight scenarios, and selected 13 cities for study. The results: (a) help locate the problems by analyzing both dimensions and indicators; (b) simulate the trends of how RBC emerged, grew, declined, and regenerated; (c) categorize RBC into four types by integrating RCSI and RCCI; (d) give policy makers a holistic and comprehensive perspective in the future urban regulation and management; and (e) highlight a road to sustainability.  相似文献   
135.
Cities are crucial to mitigating climate change and can serve as sites for innovations, providing examples of ways to conduct effective politics in transport, energy and land-use. What does it take to become a model for climate politics? This article argues that a few innovative measures will not suffice. A common vision based on broad legitimacy is crucial to achieving this position. Using a theoretical framework on input and output legitimacy with the City of Freiburg as the case, this article explores the political dimensions of the climate innovative city. The study shows that a specific kind of “green conservative” politics and a consensual view on climate issues across parties have been very important to creating political legitimacy. This has been supported by extraordinary and extensive citizen engagement in combination with the actual output, i.e. what environmental policies have delivered. The legitimacy for the Green City model also means that Freiburg is viewed as a highly livable city, in turn, creating self-enforcing dynamics that challenge its innovative potential.  相似文献   
136.
中国属多山地的国家,山地城市依山而建,因其特殊的地理位置、地质条件、地形地貌、气候水文等环境要素,构成了区别于平原城市的重要特征。水安全是全球关注的问题,通过分析我国山地城市水安全问题及影响因素,发现水安全问题日趋严峻,为了构建可持续发展的"人"、"山地"和"水"的和谐关系,需要尽快开展山地城市水安全的研究。  相似文献   
137.
资源型城市系统能否形成新的、有序的耗散结构主要依赖于系统中的随机涨落,而这种随机涨落的产生是由各种触发和激化因子决定的.分析了资源型城市系统演化过程中的内源激化因子和外源触发因子,探讨了它们之间的协同动力机制,找出了资源型城市系统演化的序参量是科技进步水平、政府宏观调控和国家对资源型城市的投资.  相似文献   
138.
我国西部中小城镇防震减灾管理体系研究   总被引:2,自引:1,他引:1  
分析了我国西部中小城镇防震减灾管理现状,借鉴发达国家防震减灾管理的经验,构建了西部中小城镇防震减灾管理体系,包括防震减灾法律保障、行政监管、地震监测预报和预警、防震减灾计划、建筑物和生命线工程的抗震性能保证、防震减灾教育与培训、基层单位对震灾的预防、地震救援组织建设、震灾应急救援服务等彼此关联、相互作用的子系统。指出其建设重点应放在建筑物和生命线工程抗震性能保证、行政监管、防震减灾计划、防震教育培训和基层震灾预防等方面。提出了深化西部中小城镇建设管理体制改革、提高防震减灾社会管理与公共服务水平、加强地震灾害应急救援体系建设等对策和建议。研究成果的运用将有助于增强西部中小城镇的防震减灾管理能力。  相似文献   
139.
Rust belt cities of the northeastern United States are plagued by flat or declining economies and the accompanying social fallout from lack of employment. Advocates of green fuels, green infrastructure and green jobs have proposed these nature-based technologies as means to revitalize the economies of cities. Before making public and private investment a baseline analysis of the relative magnitude of existing energy production and energy respiration at the neighborhood scale is useful in order to understand what the potential for green infrastructure might be. Because the urban canopy and other green infrastructure can enhance urban socio-ecological metabolism, we measured the flows of natural energy produced (P) by the urban forest versus the industrial or fossil energy currently consumed or respired (R) in three economically and demographically distinct neighborhoods of a typical rust-belt city, Syracuse, NY. Our objectives were to (1) understand the potential for green energy to replace fossil fuels in general, (2) assess the degree to which different socio-demographic communities are receiving the ecosystem benefits of existing urban “green” infrastructure (i.e. forest primary production), and (3) identify where local (in-city) biotic energy resources could be enhanced or fossil fuel consumption altered to improve overall urban socio-ecological metabolism. We found that (1) the fossil energy consumed in all three neighborhoods was 200-700 times higher than the biotic “green” energy produced; (2) that to produce this much energy from willow biomass grown in the region would require at least between 0.3 and 0.7 ha of bio-energy production per person depending on affluence, density of living, transportation mix and home fuel mix; (3) that although the more affluent neighborhood used, per residence and per person, almost twice as much energy as that of the downtown more densely settled and poorer neighborhood, its R:P ratio was still the lowest due to the high primary productivity of its neighborhood tree canopy. As a first assessment our findings identify several opportunities for enhancement of the socio-ecological metabolism of these neighborhoods, and the city at large, through conversion of heating units in poorer neighborhoods away from expensive electricity, and toward tree planting, solar installations, and per capita energy use reductions.  相似文献   
140.
提出一种基于灾害演化网络的风险分析方法,针对城市暴雨灾害的演化过程进行了风险分析。利用复杂网络理论构建北方城市暴雨灾害演化网络模型,将危机事件分为三个等级,并探讨了事件级别和出入度的关系;分析城市暴雨灾害链演化特点和暴雨危机事件后果蔓延规律,得到关键危机事件和演化链。结果表明,交通堵塞是我国北方城市暴雨灾害系统中关键危机事件;暴雨灾害演化系统存在短链、长直链和循环链三种结构,其中循环链中的危机事件互为因果,可自行激化,是灾害演化网络控制的关键结构。  相似文献   
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