鲁北地区热储弹性释水系数计算方法探讨

在对裘布依、泰斯公式适用条件的讨论基础上,提出了利用稳定流抽水试验资料求解弹性释水系数的方法,解决了鲁北地区地热资源计算中弹性释水系统确定的难题。该方法首先利用裘布依公式及吉哈尔特经验公式联立求解热储含水层的渗透系数(K),在此基础上,根据稳定流抽水试验第一落程初始时间段的降深与时间的关系曲线,利用泰斯公式求解热储含水层的弹性释水系数。     

地市级气象现代化建设的基本思路与实例

建设气象综合信息服务系统是实现气象业务现代化和气象服务产业化的必然趋势。本文通过攀枝花市气象业务及综合信息产品服务系统总体设计与实践，对地市级气象业务服务建设的若干问题进行了归纳分析，从信息工程理论出发，结合实际，提出了系统建设的基本思路     

气象现代化业务效益评价方法探讨及评估

依据现代化管理的层次分析法、主成分分析法、模糊测评法和模式识别法的优点，结合气象现代化业务效益的特点，提出了适合于气象现代化业务效益评价的方法——ＡＰＦＰ评价法，并应用ＡＰＦＰ评价法，分析和评价了气象现代化在短期天气预报服务中的效益     

专业气象服务市场及营销策略研究

论述了气象服务市场的特征、性质、地位及作用 ,分析了当前气象服务市场的供求状况 ,提出了促销气象服务的策略     

专项气象服务经济效益的评价理论与技术

当前，由于缺乏对气象服务投入量与产出量准确而完整的统计，要对气象服务的各种经济效益作出总体评价是困难的。然而，在专项气象服务中，却不乏原始、完整而准确的资料。作者从此出发，讨论了专项气象服务经济效益评价的理论。并通过实地调查，以彭州市气象局几项专项气象服务为例探讨了评价技术。     

不失时机大力发展商业性气象服务

主要阐述了在继续做好公益性气象服务的同时,应当不失时机,采取得力措施,大力发展商业性气象服务产业,开拓服务市场的必要性、可行性以及预想的目标,并在此基础上提出了发展商业性气象服务的相关对策建议。     

论DI2002激光测距仪的气象改正

针对DI2002激光测距仪气象改正公式,结合目前我国在精密测距中实测的气象元素及地震监测特点,在讨论了光电测距基本气象改正的基础上,推导了DI2002激光测距仪的精密气象改正公式.结果表明,与仪器说明书所给公式相比,导出的公式不仅提高了气象改正计算精度,而且适合于不同气象元素的测定,具有普遍的实用意义.最后较系统地分析了各气象元素测定误差对DI2002测距结果的影响,定量计算了各气象元素在选定气象参考点的误差大小,并分析了其动态趋势.这对合理控制气象元素测定误差、有效减弱对测距结果的影响具有重要意义.     

国内气象服务研究中的公共气象服务主题分析

为了探究国内气象服务研究中公共气象服务主题的研究状况及趋势,对1986~2010年以"气象服务"为主题的1439篇学术论文进行了知识图谱分析,整理出包括公共气象服务在内的14个气象服务研究热点。研究结果表明公共气象服务研究包含于应用气象服务研究层次,处于气象时效性低、服务专业性高的研究领域,与农业气象服务、气象信息服务、气候资源服务、应用气象服务等热点领域存在交叉性的特征,具有面向决策气象服务、公众气象服务、新农村建设、气象服务产业化和气象事业可持续发展的需求,侧重于信息传播、预警、效益、安全、网络的研究趋势。     

简论气象部门的发展战略问题——参加二区协气象管理技术会议的收获与思考

本文根据作者参加WMO二区协气象管理技术会议的体会,提出制定气象部门发展战略的观点与思路,即环境分析与对外开拓战略、缩小差距与合作战略、提高气象部门地位与加强管理战略、依靠科技进步与加强人才培养战略、满足用户需要的气象服务战略以及在投入产出的良性循环中发展气象事业的战略:并简述了制定发展战略的基本方法和步骤。     

气象信息价值实现的若干问题——关于四川省彭州市专业气象有偿服务的考察

气象信息价值的实现是气象服务存在与发展中带根本性的问题。从当前国内外气象服务发展的现状出发,以四川省彭州市的气象服务为依据,分别对专业气象有偿服务的内容、基本状况、实现气象信息价值的特点及实现气象信息价值的若干对策进行了全面探讨。     

Thermohaline structure inhomogeneity associated with polynia at the northern margin of Emery Ice-shelf

Based on the hydrographic data in austral summer during the 22nd Antarctic Expedition of China(2005/2006),some features can be found about the northern margin of Emery ice shelf as follows.The heat content in the surface layer(0-50 m) at the eastern end and the western end of the ice-shelf margin is much higher than that at the middle.The upper mixing-layer depth and the seasonal thermocline depth at the middle of the ice-shelf northern margin are much shallower than those at the both ends.However there is much less difference between the middle and the ends in the bottom layer.The remote sensing photos show that the inhomogeneity in the surface-layer water is closely related to the spatial distribution of the floes and polynia in the area.     

Phylogenetic analysis of cultivable bacteria isolated from Arctic sea-ice

Phylogenetic analysis based on 16S rDNA of 8 strains of cultivable bacteria isolated from Arctic sea-ice was studied.The results showed that strain BJ1 belonged to genus Planococcus,which was a genus of low mole percent G C gram-positive bacteria;strain BJ6 belonged to genus Burkholderia of β-proteobacteria and the rest 6 strain all belonged to γ-proteobacteria,of which strain BJ8 was a species of Pseudoalteromonas,strain BJ2-BJ5 and BJ7 were members of genus Psychrobacter.Phylogenetic analysis also indicated that bacteria of genus Psychrobacter of the isolates formed a relatively independent phylogenetic cluster in comparison with other bacteria belonged to genus Psychrobacter.     

Information for authors

正1 Aims and Scope Advances in Polar Science(APS)is an international,peer-reviewed journal jointly sponsored by the Polar Research Institute of China and the Chinese Arctic and Antarctic Administration.APS is a comprchensive academic journal dedicated to presentation of multi-disciplinary achievements in Arctic and Antarctic expeditions and research.Its primary purpose is to publish achievements in fundamental research,applied     

Advances in Polar Science CONTENTS(Volume 25,2014)

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Guide to Authors： Journal of Mountain Science

<正>AIMS AND SCOPE(Editorial Policy)The Journal of Mountain Science(JMS)is devoted to mountains and their surrounding lowlands-ecoregions of particular global importance,with a particular emphasis on the important highlands/mountains in the world,such as the Tibetan Plateau,the Himalayas,the Alps,the Andes,the Rockies and many other mountain ranges of our planet.     

Journal of Mountain Science(JMS)

<正>The Journal of Mountain Science(JMS),founded in2004,is an international English-language journal on mountain sciences.JMS is supervised by the Chinese Academy of Sciences(CAS),sponsored by the Chengdu Institute of Mountain Hazards and Environment,CAS,published by Science Press China,and distributed by Springer exclusively throughout the world(excluding Mainland China).The JMS is published bimonthly,fulltexted in SpringerLink and CNKI,indexed/abstracted by     

Influence of livestock soil eutrophication on floral composition in the Pyrenees mountains

Livestock behaviour in the Pyrenees includes free grazing and a long resting period that provokes the accumulation of dung and urine in some places,so-called camping areas. The aims of this study were （i） to analyze any change in floral composition,and in nutritional and chemical contents of plants in a livestock camping area; and （ii） to relate the floral composition with soil chemical properties. In a linear transect,five sampling zones were established,from the centre of the camping area to the surrounding Nardus stricta-dominant pasture. The above ground plant biomass and the topsoil were sampled in each zone with 6 replicates per zone. Plant species were classified and weighed to calculate above ground biomass,nutritional and chemical contents,and Shannon diversity and evenness indices. Additionally,soils were sampled in two periods,at the beginning and at the end of grazing period. Soil available nutrients （nitrate,ammonium,phosphorus,potassium,calcium and magnesium）,total nitrogen,organic carbon and pH were measured.
Plant chemical contents （protein,lignin and others） were significantly related to the proportions of grasses,legumes and other plants; so,the protein content is positively correlated with legumes plant biomass while lignin content is negatively correlated with grasses. Both plant and soil nutrients increased linearly towards the centre of the camping area. However,the relationship among plant species richness,diversity and evenness relative to its position along the studied transect was bell-shaped. From the outskirts to the centre of the camping area,plants with low nutrient demand were progressively replaced by those with medium and high nutrients demand and by pioneers.
Nardus stricta-dominant pasture has low plant diversity and plant nutrient content as well as a poor soil nutrient availability. The presence of the camping area introduced patches with more soil nutrients and new species in the large spatial scale. However at a small spatial scale,the strong soil nutrien     

General Table of Contents(Vol.11,2014)

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介绍GPS定位中的几个概念

文章概略介绍了利用卫星进行定位的原理 ;由卫星信号传播、信号接收和SA政策等引起的理论误差 ;给出了多种快速、高精度定位的工作模式和观测点选择的原则 ;列出了将WGS - 84坐标转换为我国坐标的公式及解算参数的具体方法 ,供读者在GPS工作中参考。