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741.
<正>(四)明确了地震灾后恢复重建实施的要求、遵循的原则、善后处置、强化服务等方面的内容。1.本法第七十条规定了地震灾后恢复重建的原则、城市、乡村恢复重建的原则以及少数民族聚居地方恢复重建的特殊要求。地震灾后恢复重建中的统筹安排基础设施和市政公用设施、公共服务设施,以及住房和无障碍设施的建设总原则,是由政府的职  相似文献   
742.
<正>修订后的《防震减灾法》完善了违法行为的责任追究制度:一方面,对管理部门违反法律规定或者行政不作为,应当承担的法律责任进行了规定;另一方面,对单位和个人违反法律规定应当承担的法律责任进行了规定。增加了处罚措施、加大了处罚力度。本法所规定的法律责任包括行政法律责任、民事法律责任和刑事法律  相似文献   
743.
744.
As the protected areas of land and coastal environment, nature reserves are designed to address how to reconcile the conservation of biodiversity, the quest for economic and social development and the maintenance of cultural values. This paper establishes a framework for nature reserve development that seeks to incorporate ecotourism into its strategies. The overall purpose was to identify the information needs required for a comprehensive nature reserve that incorporates ecotourism related values. It also illustrates the utility of this framework in the context of the Wuzhishan Mountain Region of China. A literature review, the first phase of a visionary strategy and a subsequent gap analysis for available management information were undertaken in order to achieve this paper's purpose. Finally, recommendations axe pre-sented for integrating ecotourism into nature reserve development in the Wuzhishan Mountain Region.  相似文献   
745.
746.
Most ammonia (NH3) emission inventories have been calculated on an annual basis and do not take into account the seasonal variability of emissions that occur as a consequence of climate and agricultural practices that change throughout the year. When used as input to atmospheric transport models to simulate concentration fields, these models therefore fail to capture seasonal variations in ammonia concentration and dry and wet deposition. In this study, seasonal NH3 emissions from agriculture were modelled on a monthly basis for the year 2000, by incorporating temporal aspects of farming practice. These monthly emissions were then spatially distributed using the AENEID model (Atmospheric Emissions for National Environmental Impacts Determination). The monthly model took the temporal variation in the magnitude of the ammonia emissions, as well as the fine scale (1-km) spatial variation of those temporal changes into account to provide improved outputs at 5-km resolution. The resulting NH3 emission maps showed a strong seasonal emission pattern, with the highest emissions during springtime (March and April) and the lowest emissions during summer (May to July). This emission pattern was mainly influenced by whether cattle were outside grazing or housed and by the application of manures and fertilizers to the land. When the modelled emissions were compared with measured NH3 concentrations, the comparison suggested that the modelled emission trend corresponds fairly well with the seasonal trend in the measurements. The remaining discrepancies point to the need to develop functional parametrisations of the interactions with climatic seasonal variation.  相似文献   
747.
碘量法测定硫化物实验研究   总被引:2,自引:0,他引:2  
用碘量法测定了污水中的硫化物,实验探讨了加药次序、空白滤纸、滴定终点的判断问题。由实验结果可知:必须严格按照先加入碘标准溶液、再加入硫酸溶液的次序进行处理。空白实验中是否使用滤纸,其结果差异显著。在反应过程中,随着放置时间延长,硫化物测量值会增大。  相似文献   
748.
Providing an accurate estimate of the dry component of N deposition to low N background, semi-natural habitats, such as bogs and upland moors dominated by Calluna vulgaris is difficult, but essential to relate nitrogen deposition to effects in these communities. To quantify the effects of NH3 inputs to moorland vegetation growing on a bog at a field scale, a field release NH3 fumigation system was established at Whim Moss (Scottish Borders) in 2002. Gaseous NH3 from a line source was released along of a 60 m transect, when meteorological conditions (wind speed >2.5 m s–1 and wind direction in the sector 180–215°) were met, thereby providing a profile of decreasing NH3 concentration with distance from the source. In a complementary study, using a NH3 flux chamber system, the relationships between NH3 concentrations and cuticular resistances were quantified for a range of NH3 concentrations and micrometeorological conditions for moorland vegetation. Cuticular resistances increased with NH3 concentration from 11 s m–1 at 3.0 g m–3 to 30 s m–1 at 30 g m–3. The NH3 concentration data and the concentration-dependent canopy resistance are used to calculate NH3 deposition taking into account leaf surface wetness. The implications of using an NH3 concentration-dependent cuticular resistance and the importance for refining critical loads are discussed.  相似文献   
749.
绿色食品产品农业生态环境质量是影响食品质量的重要重要因子之一。涪陵 地区发展榨菜生产已有百余年历史,加之榨菜产地污染少,气候适宜、环境条件具备发展绿色食品。调查资料和实际检测结果表明,涪陵区发展榨菜绿色食品在环境质量方面是可行的。  相似文献   
750.
接触絮凝的概念源于直接过滤 ,是指介质存在时的絮凝作用。由于简便易行、处理效果良好 ,接触絮凝方法处于迅速发展之中 ,并且具有广泛的应用前景。其研究范围包括物理、化学、胶体界面过程等相互作用。本文以溶液中的颗粒物相互作用为基础 ,对接触絮凝理论的发展加以简要概述  相似文献   
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