试论保险公司的洪涝减灾对策

洪涝是危害极为严重的灾种之一，并正在日益加剧。它在给人民生命财产造成巨大损失的同时，也给保险经营构成严重威胁。作者在分析我国洪涝灾害特点和规律的基础上，从保险公司角度提出洪涝的防灾减灾对策，以求把洪涝灾害造成的损失减少到最低程度，实现社会效益和自身效益的双重目标。     

Analysis of the origin of peak aerosol optical depth in springtime over the Gulf of Tonkin

By aggregating MODIS(moderate-resolution imaging spectroradiometer) AOD(aerosol optical depth) and OMI(ozone monitoring instrument) UVAI(ultra violet aerosol index)datasets over 2010–2014, it was found that peak aerosol loading in seasonal variation occurred annually in spring over the Gulf of Tonkin(17–23°N, 105–110°E). The vertical structure of the aerosol extinction coefficient retrieved from the spaceborne lidar CALIOP(cloud-aerosol lidar with orthogonal polarization) showed that the springtime peak AOD could be attributed to an abrupt increase in aerosol loading between altitudes of 2 and 5 km.In contrast, aerosol loading in the low atmosphere(below 1 km) was only half of that in winter. Wind fields in the low and high atmosphere exhibited opposite transportation patterns in spring over the Gulf of Tonkin, implying different sources for each level. By comparing the emission inventory of anthropogenic sources with biomass burning, and analyzing the seasonal variation of the vertical structure of aerosols over the Northern Indo-China Peninsula(NIC), it was concluded that biomass burning emissions contributed to high aerosol loading in spring. The relatively high topography and the high surface temperature in spring made planetary boundary layer height greater than 3 km over NIC. In addition, small-scale cumulus convection frequently occurred, facilitating pollutant rising to over 3 km, which was a height favoring long-range transport. Thus, pollutants emitted from biomass burning over NIC in spring were raised to the high atmosphere, then experienced long-range transport, leading to the increase in aerosol loading at high altitudes over the Gulf of Tonkin during spring.     

危险化学品泄漏事故应急处置技术

在介绍化学事故应急处置的步骤、程序的基础上,结合自身的研究工作对危险化学品泄漏事故应急处置的方法及相关技术进行了归纳和总结,并对各种方法在危险化学品泄漏事故应急处置的应用前景及尚待开展的工作进行了评述和展望.     

CDM问题的冷思考

CDM,即清洁发展机制,是基于《京都议定书》衍生出的温室气体跨界减排的三大机制之一。发达国家可以通过向不承担减排义务的发展中国家购买"可核证的排放削减量(CERs)",从而履行《京都议定书》所规定的减排义务。目前中国正在积极发展CDM项目。在CDM给中国带来利益的同时,也要警惕审批程序带来的不确定性、恶性价格竞争、未来政策的变动及额外性要求和成本偏高等风险,提高认识水平、加强内外沟通、深入方法学研究、拓展CDM项目领域、把握技术规则和排放标准的主动权是我们应该积极主动采取的对策。     

灾害应急管理的若干基本问题的探讨

对人类的灾害心理行为机制及其特点的研究揭示出：要特别重视缓发性灾害的应急管理;要及时地进行心理干预,引导消极行为转向积极行为。为了形成团体有效一致的减灾行为,必须从普及灾害知识入手,从而树立正确的灾害态度。同时,在灾害应急管理中应充分发挥团体的凝聚力、战斗力,个体行为要服从团体行为。灾害应急管理是链接灾前风险管理与灾后风险管理的一环,虽然时间短暂,但可以在很大程度上减少伤亡,且为以后的重建的顺利进行打下基础。在灾害应急管理中要搞好自助、共助与公助责任的合理分割。     

浅议步云工业集中区环境安全措施与对策

根据南湖区步云工业集中区化工企业集聚、环境风险高的特点,提出强化综合决策,保障环境安全,大力发展循环经济,实施生态园区建设,加强环境监督管理等环境安全战略对策。     

珍稀濒危植物评价分级专家系统研究

开列珍稀濒危植物的清单并划分其保护序列，是生物多样性保护的一项最基本的工作。本文通过对珍稀濒危植物评价分级指标的研究，以评价指标体系为基础，并引入专家系统方法，建立了珍稀濒危植物评价分级专家系统。该系统模拟人类专家的思维过程，将有助于把珍稀濒危植物优先保护级别的划分，由定性划分提高到定量定性相结合的水平。     

二氧化氯和液氯消毒饮用水致突变性的比较

本文运用国内外广泛应用的Ａｍｅｓ试验,对二氧化氯与液氯消毒水样进行了致突变性的比较,结果表明,ＣｌＯ２消毒的水样未显示出致突变性,而液氯消毒的水样显示致突变性的研究结果为ＣｌＯ２在饮用水消毒中的应用提供了科学的依据。     

Large-eddy simulation of low-level jet-like flow in a canopy

The computational method of Large-Eddy Simulations has been used to study the weak, neutrally stable drainage flow within tree canopies. The computational results show that a secondary velocity maximum that resembles a jet is formed within the canopy under the nocturnal flow conditions. This jet-like flow is important in the analysis and measurements of the net ecosystem-atmosphere exchange (NEE) for carbon dioxide (CO₂). A uniformly distributed, plane source was placed within the canopy in order to simulate the nocturnal production of CO₂. The NEE is calculated as the sum of the integration of the rate of change of the concentration of CO₂ over the computational domain, the vertical turbulent flux measured directly by eddy-covariance (EC) method, and the advection terms, which are not taken into account in the EC method. Numerical results of the velocity and concentration fields, within and above the canopy, are presented and their impact on the CO₂ transport is investigated in detail. The computational results show that 15–20% of NEE is drained out by the advection process under the canopy. The results also show that the turbulent fluctuations in the lateral direction are also significant and may result in 2–5% CO₂ transport.     

城市的低空气温分布特征及其对大气污染物扩散的影响

本文从城市热岛和城市逆温两个相互联系的不同侧面，分析城市低空气温的分布特征，并结合城市实际污染分布特征，讨论这种局地城市小气候效应对城市大气污染的形成以及对大气污染物扩散的影响，认为热岛效应以及由此引起的对低空温度层结和局地风场影响等的小气候效应是形成城市大气污染分布特征的主要气象原因。