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321.
Over a period of some 20 years, different aspects of co-management (the sharing of power and responsibility between the government and local resource users) have come to the forefront. The paper focuses on a selection of these: knowledge generation, bridging organizations, social learning, and the emergence of adaptive co-management. Co-management can be considered a knowledge partnership. Different levels of organization, from local to international, have comparative advantages in the generation and mobilization of knowledge acquired at different scales. Bridging organizations provide a forum for the interaction of these different kinds of knowledge, and the coordination of other tasks that enable co-operation: accessing resources, bringing together different actors, building trust, resolving conflict, and networking. Social learning is one of these tasks, essential both for the co-operation of partners and an outcome of the co-operation of partners. It occurs most efficiently through joint problem solving and reflection within learning networks. Through successive rounds of learning and problem solving, learning networks can incorporate new knowledge to deal with problems at increasingly larger scales, with the result that maturing co-management arrangements become adaptive co-management in time.  相似文献   
322.
乌江流域是我国水能、煤炭、铝、磷资源富集区,具有储量大、质量好、分布相对集中、组合配置好等特点。目前该流域及其邻近省区电力紧缺,煤炭供应不足;铝、磷等更是我国经济发展中的短线产品。乌江流域经过多年建设,具备了综合开发、加工的基础。乌江流域具有建设电力—冶金—化工基地的优越条件,其开发在战略上应分两步走,前期重点加速水电梯级建设,扩大煤炭、磷矿、铝土矿等主要资源的开采规模,原煤、精选磷矿以外运为主;后期建设重点是在进一步开发水电梯级和扩大资源开发规模的同时,兴建火电厂,形成水火互济强大电力基地,发展氧化铝、电解铝、重钙、黄磷等铝、磷综合性加工工业,形成从矿山开采,到原矿初加工、深加工的冶金、化工基地。  相似文献   
323.
《生态保护》在我院是一门重要的课程,也是一门实践性很强的学科,但是目前该课程的实践教学环节还相当薄弱。增建实习实践基地,选择合适的实习路线,拟建相关学科实验室等措施将为该课程的实践教学提供保障。  相似文献   
324.
Sociological critiques of scientific research processes and their application have developed nuanced understandings of the social, cultural and political forces shaping relationships between science and decision-making. Simultaneously, environmental researchers have sought to construct more engaged, dynamic modes of conducting research to facilitate the application of science in decision-making and action. To date, however, there are relatively few theoretically-oriented approaches that have been able to draw productive connections between the sociological critique and the practical applications that can aid in navigating this complex and diverse milieu. In this article, we propose that the concept of “knowledge governance” can bring together targeted inquiry into the socio-political context in which environmental science is situated, alongside analysis of specific interventions that change knowledge-to-action relationships. Drawing together Jasanoff’s (2005) concept of civic epistemology with Cash et al.’s (2003) knowledge systems for sustainability approach, this knowledge governance inquiry framework offers an integrative lens through which to critically reflect on knowledge-based processes, and incorporate that deeper understanding into intervention efforts. We briefly illustrate its application with reference to a pilot project examining conservation decision-making in the Western Pacific island nation of Palau.  相似文献   
325.
ABSTRACT: A computerized geographic information system (GIS) was created in support of data requirements by a hydrologic model designed to predict the runoff hydrograph from ungaged basins. Some geomorphologic characteristics (i.e., channel lengths) were manually measured from topographic maps, while other parameters such as drainage area and number of channels of a specified order, land use, and soil type were digitized and manipulated through use of the GIS. The model required the generation of an integrated Soil Conservation Service (SCS) curve number for the entire basin. To this end, soil associations and land use (generated from analysis of Landsat satellite data) were merged in the GIS to acquire a map representing SCS runoff curve numbers. The volume of runoff obtained from the Watershed Hydrology Simulation (WAHS) Model using this map was compared to the volume computed by hydrograph separation and found to be accurate within 19 percent error. To quantify the effect of changing land use on basin hydrology, the GIS was used to vary percentages from the drainage area from forest to bare soil. By changing the basin runoff curve numbers, significant changes in peak discharge were noted; however, the time to peak discharge remained essentially independent of change in area of land use. The GIS capability eliminated many of the more traditional manual phases of data input arid manipulation, thereby allowing researchers to concentrate on the development and calibration of the model and the interpretation of presumably more accurate results.  相似文献   
326.
A novel polyimide-inlaid amine-rich porous organic block copolymer (PI-b-ARPOP) was prepared via one-step polymerization by using different molar ratios of melamine (MA)/terephthalaldehyde (TA)/pyromellitic dianhydride (PMDA), at molar ratios of 4/3/1, 4/2/2 and 4/1/3. The copolymer contained both aminal groups belonging to ARPOP and imide groups belonging to PI, and the bonding styles of the monomers and growth orientations of the polymeric chains were diversiform, forming an excellent porous structure. Notably, MA/TA/PMDA (4/2/2) had a surface area and pore volume of 487.27?m2/g and 1.169?cm3/g, respectively. The adsorption performance of the materials towards 2,4-dichlorophenol (2,4-DCP) in ultra-pure water was systematically studied. The pH value of 7 was optimal in aqueous solution. Na+ and Cl? ions did not negatively affect the adsorption process, while humic acid (HA) slightly decreased the capacity. The equilibrium time was 40 sec, and the maximum adsorption capacity reached 282.49?mg/g at 298?K. The removal process was endothermic and spontaneous, and the copolymer could maintain its porous structure and consistent performance after regeneration by treatment with alkali. Moreover, to further assess the practical applicability of the material, the adsorption performance towards 2,4-DCP in river water was also investigated. This paper demonstrated that the PI-b-ARPOP can be an efficient and practical adsorbent to remove chlorophenols from aqueous solution.  相似文献   
327.
为提高漠河试验站低温工作极值统计的准确性,推进低温工作极值在装备低温环境适应性评估中的应用.以最低温度、平均温度、小于–35℃的天数为基准条件,分别统计了漠河不同年份的低温工作极值,研究了基准条件、统计年份、数据缺失情况对严酷月确定和工作极值的影响.基准条件、统计年份、数据缺失都会影响严酷月的确定和低温工作极值的统计,统计年份的影响比基准条件大,数据缺失影响的严重性需要看数据缺失的多少和时间段.工作极值结果至少包括数据年限、基准条件、严酷月、时间风险率、与时间风险率对应的工作极值等内容.1991—2005年,时间风险率为1%、5%、10%、20%、30%的最低温度工作极值分别为:–44.0、–40.7、–38.1、–35.6、–33.6℃.  相似文献   
328.
《中国环保产业》2014,(10):10-12
综述了2013年循环经济行业发展的政策环境及再生资源回收利用概况;重点分析了“城市矿产”建设发展,以及煤炭行业、石化行业、拆船行业的循环经济发展现状;针对行业发展中存在的主要问题提出了相关对策建议;对行业的发展进行了展望。  相似文献   
329.
Indigenous communities are particularly sensitive to the use and development of freshwaters, as they hold distinct perspectives on water which reflect their identity, and their custodial obligations to manage tribal waters. Within New Zealand, Maori (the indigenous people) have, for generations, voiced their concerns about the continual modification of waterways within their tribal territories. Until about the mid-nineteenth century, water quality was at the forefront of issues concerning human manipulation of rivers and streams. A range of new issues then arose that were increasingly concerned with reduced river flows. Of the many techniques developed to address these issues, many rely heavily on professional expertise and objective, scientific philosophies, which often fail to recognize cultural values, and benefit from cultural knowledge. This essay presents examples of the knowledge of streams and rivers held within Maori communities that could benefit contemporary resource management if it can be determined how cultural knowledge and practices and scientific approaches can be communicated and integrated.  相似文献   
330.
PROBLEM: In most countries, drivers licensing systems usually include teaching some aspects of using safety equipment (e.g., airbags and seat belts). However, there is now evidence worldwide that such education is inadequate, as indicated by, for example, the overrepresentation of young drivers who do not use seat belts. METHOD: A randomized controlled study was conducted in Sweden to evaluate the effects of visiting a facility known as a "safety hall" in combination with the mandatory skid training. The results were assessed to determine the effects of the knowledge and attitudes of learner drivers in the following subjects: airbags, securing loads, seat belts, sitting posture, speed, and tires. An experimental group and a control group comprising 658 and 668 learners, respectively, answered identical questionnaires on three different occasions (pretest, posttest 1, and posttest 2). RESULTS: The results show that, for most of the topics considered, knowledge and attitudes in both groups were better at posttest 2 than at the pretest, and in general, the best knowledge and attitudes were found in the experimental group. The combined safety/skid training seems to have had the greatest effect on seat belts and loads. The findings also indicate that the safety halls can be further improved to achieve an even better effect. IMPACT ON TRAFFIC SAFETY: The use of safety halls has improved the knowledge and attitudes of learner drivers concerning several important areas related to traffic safety. Since knowledge and attitudes are important predictors of behavior, implementing safety halls can be expected to lead to improvements, especially regarding the use of safety belts and securing loads.  相似文献   
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