适应地理数据增量变化的B/S系统快速构建方法

随着智慧中国、智慧城市建设的不断推进,省级专题地图数据库的建立实现了地理信息资源以及专题数据的整合,在政府管理决策、产业发展、人民生活等方面发挥着越来越重要的作用。针对省级专题地图数据库的数据量大、标准化程度低、变更频繁、用户多等特点,本文以安徽省专题地图数据库为例,基于Arc GIS Server与Arc GIS API for Flex的Web GIS框架,探讨了能够适应地理数据以及专题统计数据增量变化的B/S系统快速构建方法。     

突发灾害监控与决策系统的设计与实现

现代社会,面对高危或人类无法到达的区域,如森林火场现场视查、地震灾情查看、城市等狭窄地段的高楼消防救灾、核辐射现场勘察检测等,基于无人机的无线通信系统,由于体积小和机动灵活,通过信息传感采集、视频现场捕捉,能安全、有效地获取现场灾情情况信息。然后数据通过中继传到后台,存入后台数据库。利用采集到的现场信息与Arc GIS Server发布的GIS相关服务,通过Arc GIS API for Flex对数据进行快速分析处理,使采集信息可视化,同时进行突发灾害模拟预测,准确定位事发地点,评价灾害影响范围,查找救援最短路径等。本文设计并实现了基于无人机突发灾害监控与决策系统,同时重点介绍系统的设计、组网的关键技术、视频压缩、基于GIS的数据处理与分析以及系统实现的功能。     

基于景观格局指数的基本农田保护区集中连片性研究——以济南市历城区为例

耕地与基本农田保护是我国土地管理、土地利用规划的重要内容。新一轮土地利用总体规划修编及数据库建设中要求基本农田调整布局更加集中连片。该文应用景观格局指数,研究了济南市历城区基本农田保护区规划调整中集中连片性的变化。结果表明,除保护区图斑面积标准差外,图斑平均面积、图斑面积变异系数、图斑边界密度、最大斑块指数、平均欧式邻近距离5项指标均表明,规划调整后基本农田保护区布局上更加集中连片。为基本农田保护区布局的集中连片性判断提供了简便易行的方法。     

基于GIS的陕北景观结构

以陕西土地利用现状图作为数据基础,应用Arc/Info和Arc/view等GIS专业软件,对陕北地区的景观进行了分类,并形成了景观分类图。利用景观格局分析软件FRAGSTATS,在斑块类型和景观两个水平上计算了相应的参数和景观指数,定量揭示了整个区域的景观格局与类型特征。为进行深入研究和揭示生态过渡地带生态过程奠定了基础。     

基于模型构建器的三调地类变化类型标注方法研究

地类不一致图斑信息作为实地调查和调查结果国家级核查的重要基础数据,人工逐个图斑核实地类变化结果的工作量大且差错率高.为保证内业信息提取工作顺利开展,有效支撑第三次全国土地调查工作稳步实施,本文通过对比三调初始库和年度土地变更调查数据库,提取地类一致图斑和地类不一致图斑,并标注地类不一致图斑的地类变化类型.利用ArcGI...     

湖南省省直管国有土地资产管理信息系统设计与开发

为全面摸清省直管国有土地资产家底,盘活存量土地资产,设计开发了基于GIS技术的省直管国有土地资产管理信息系统。在Arc GIS Server平台的基础上,采用Arc GIS API for Flex,结合空间数据引擎Arc SDE进行开发,最终实现了全省土地资产信息和基础空间信息的有效结合。     

县级土地利用数据库建设技术方法

县(市)级土地利用数据库建设主要有两种方案：一是以土地详查资料为基础，建立基年(变更前)数据库，然后再将数据库逐年或一次性更新到最新年份；二是进行土地利用更新调查，而后直接建立最新年份土地利用数据库。第一种方案，资料的先取和图件的质量直接关系到系统建设的科学严谨性，图件采用灰度扫描并镶嵌配准到大地坐标，经分层矢量化、图幅接边、拓朴处理，生成地类图斑和行政辖区图斑，属性数据采用外部数据库录入与图形挂接，详查控制面积核查无误后，进行同类数据文件拼接，建立数据字典，基年数据入库；变更数据经采集、入库和变更综合处理，完成数据库的更新。第二种方案，入库资料是经外业影像调绘更具有现势性，属性在图形采集编辑时直接录入，地类图斑采用计算机面积茸算和控制面积平差，建库流程简捷高效。     

基于地统计学和GIS的辽中县蔬菜地适宜性评价

正GIS在土地适宜性评价中已经得到灵活和有效的应用,本文借鉴已有的研究成果,以辽中县耕地为评价对象,以辽中县土地利用现状图和土壤图叠加后形成的图斑为评价单元,利用Arcgis把各评价因子栅格图层和评价地图叠加后,采集评价单元内的各评价因子属性值,建立蔬菜地适宜性评价数据库,并利用Arcgis中对字段的运算功能求得评价单元综合质量分。评价工作底图数据库的建立依据辽中县耕地地力评价空间和属性数据库,提取耕地地力评价     

地理实例数据语义一致性检查研究——以水系要素为例

为实现地理信息服务智能化的目标,构建知识地理本体数据库,需要在数据入库前,对实例数据进行语义一致性检查。本研究通过对实例数据进行语义关系分析,以水系数据为例,制定了相应的语义检查规则,并运用Arc GIS空间分析和建模工具实现相应功能。在传统数据检查的基础上增加语义层面的保证,本研究为智能化的地理信息系统应用提供数据保障。     

ArcGIS在地理国情普查内业中的应用

本文将Arc GIS技术与地理国情普查的内业工作结合起来,在地理国情普查内业处理中,通过对Arc GIS的Topology工具及Arc Toolbox的运用,综合分析Arc GIS软件在内业数据整理的优缺点。     

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     

Relationship of Arctic sea ice and Northern Hemispheric 500 hPa Polar vortices

Using the NCEP/NCAR reanalysis monthly 500 hPa height data on a 2.5 latitude-longitude grid and 1°×1° sea ice data,the polar vortex area,intensity index and arctic sea ice area index are calculated respectively,and the meridional distribution,period variation and the abrupts in the long range trend are analyzed to study their relationship.The results show that the meridional distribution of sea ice and polar vortex h-ave distinctive difference,the relative positions of them are different in the eastern and western hemispheres,and exept they have periods of 4 months,quasi half year,quasi year,4-5 years and 10 years commonly,and each of them has its own respective variation as well.The sea ice area is decreasing apparently since 1980's,so is the polar vortex area,but their abrupt changge time are different totally.The area of sea ice and polar vortex has prominent positive correlation,but the relationship of sea ice intensity,polar vortex intensity,polar vortex area is complicated.     

Author Index for Journal of Mountain Science Volume 11,2014,pp 1-1656

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Information for Authors

<正>The Journal of Ocean University of China(Oceanic and Coastal Sea Research)is a comprehensive academic quarterly sponsored by the Ocean University of China,published one volume per year.This journal is devoted to the publication of the theoretical and applied research