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冰斗形态参数提取的稳定性研究

河北师范大学学报（自然科学版） 2023年第3期47卷 307-316页

作者：赵志斌刘强杨成赵晓艳易朝路刘金花李英奎河北省环境变化遥感识别技术创新中心河北石家庄050024 河北师范大学地理科学学院河北石家庄050024 河北吉远通用航空有限公司河北石家庄050024 中国科学院青藏高原环境变化与地表过程重点实验室北京100101 东华理工大学地球科学学院江西南昌330013 department of Geography University of TennesseeTennessee Knoxville TN37996

冰斗是一种典型的冰蚀地貌,它的形态与冰川发育时期的气候及环境密切相关,对判断识别某区域是否发育古冰川、恢复区域古气候和环境信息具有重要意义.然而,冰斗形态参数的提取往往受到绘图者对冰斗认识和冰斗发育程度等的影响,具有一定... 详细信息

冰斗是一种典型的冰蚀地貌,它的形态与冰川发育时期的气候及环境密切相关,对判断识别某区域是否发育古冰川、恢复区域古气候和环境信息具有重要意义.然而,冰斗形态参数的提取往往受到绘图者对冰斗认识和冰斗发育程度等的影响,具有一定的不确定性.通过15名人员对天山天格尔峰地区11个冰斗边界的多次绘制,使用基于Python编写的自动提取冰斗形态参数的软件包(automated cirque metric extraction,ACME)提取冰斗的16个形态参数,分析冰斗形态参数提取的稳定性.结果表明,发育良好、边界特征清晰的冰斗提取的形态参数受不确定性因素的影响小,稳定性高;发育较差、边界特征不明显的冰斗提取平均坡向和平面闭合度时,受不确定性因素的影响较大,稳定性较小,而圆度、最低高程、面积高度积分等形态参数受不确定性因素的影响较小,稳定性高,总的来说冰斗形态参数具有较高的稳定性.

关键词：冰斗形态参数 gis 变异系数稳定性

gis支持下的黄河河源区降水径流要素变化分析

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水土保持研究 2004年第1期11卷 144-147,155页

作者：李道峰田英刘昌明北京师范大学环境科学研究所水环境模拟国家重点实验室水沙科学教育部重点实验室北京100875 department of Civil Engineering The University of Hong Kong

对黄河河源区多年平均和雨季降水量、年际径流量进行分析。流域西北部玛多站多年平均降水量变化不大,而流域东南部降水丰沛的久治站则呈现大幅下降的趋势,这对黄河河源区的产流量带来不利的影响。年内降水量以雨季变化较大,且表现出下... 详细信息

对黄河河源区多年平均和雨季降水量、年际径流量进行分析。流域西北部玛多站多年平均降水量变化不大,而流域东南部降水丰沛的久治站则呈现大幅下降的趋势,这对黄河河源区的产流量带来不利的影响。年内降水量以雨季变化较大,且表现出下降的趋势。计算得到径流量的变差系数、年际变化绝对比率和不均匀系数,表明径流量年际波动较大。认为降水强度和降水量是影响黄河河源区径流系数变化的主要原因。

关键词：黄河河源区降水量径流径流系数 gis

Urban Disaster Prevention Shelter VulnerabilityEvaluation Considering Road Network Characteristics

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Journal of Civil Engineering and Architecture 2013年第5期7卷 609-615页

作者： Cheng-An Tai Yung-Lung Lee Architecture and Building Research Institute Ministry of the Interior New Taipei City 23143 Taiwan R.O.C. department of Land Management and Development Chang Jung Christian University Tainan City 71101 Taiwan R.O.C.

Large-scale national disasters have recently occurred worldwide, causing tremendous damage to life and property. Therefore, urban safety has become a critical issue, and disaster prevention and mitigation are also considered in urban development and infrastructure construction. When earthquake disasters occur, road networks play major roles in rescue activity for responding to urban damage. The urban-disaster prevention spatial system attempts to mitigate hazards by considering shelters, routes for evacuation and rescue and necessary logistics. A literature review shows numerous studies related to a disaster-prevention shelter survey before or after hazards, however, they are less concerned with the reliability of shelter evaluation. This study assesses shelter evaluation by considering road networks. The authors construct 10 selected indices individually related to road networks. Three integrated composite indices are established to explain planned-shelter risks using the Arc gis diagram of a spatial concept of an urban-planning review process. The relationship between shelters and evacuation/rescue routes is important for disaster-prevention planning. This survey investigates the factors of road networks, fire engine rescue routes, fire station location and road/population density for vulnerability evaluations.

关键词：道路网络城市防灾住房救援活动漏洞评估特性基础设施建设地震灾害

Analysis of Water Resources Vulnerability Assessment Tools

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Journal of Agricultural Science and Technology(B) 2019年第2期9卷 69-86页

作者： Kanga IdéSoumaila Albachir Seydou Niandou Mustapha Naimi Chikhaoui Mohamed Keith Schimmel Soil and Water Management Laboratory Department of Natural Resources and EnvironmentHassan II Institute of Agronomy&Veterinary MedicineRabat 10101Morocco Applied Science and Technology North Carolina Agricultural and Technical State UniversityGreensboroNC 27411USA

Water resources face many pressures and stresses around the *** the vulnerability of water resources is,therefore,increasingly an essential practice in water resources *** studies of water resources vulnerability have been carried out around the world during the last three ***,the main objective of this study was to analyze water resources vulnerability assessment tools and identify the methodological trend of water resources vulnerability assessment at the local level in existing *** achieve this objective,the Preferred Reporting Items for Systematic Reviews and Meta-Analyses(PRISMA)method has been applied to include or exclude *** on water vulnerability numbering 374 were preselected in the ScienceDirect and the Google Scholar *** 32 out of the 374 articles met the inclusion criteria defined for the *** results show that China(21.9%),U.S.A.(9.4%)and Canada(6.3%)are the most active countries publishing water resources vulnerability *** 191 vulnerability indicators from the 32 articles were classified into five categories of factors:physical factors(33.5%),socio-economic factors(28.3%),environmental or eco-environmental factors(25.1%),institutions and governance factors(7.3%)and infrastructure factors(5.8%).This study shows that almost half of the studies(47%)considered all five categories of factors,9.4%considered four categories of factors,6.3%considered three categories of factors,28%used two types of factors and 9.4%considered only one *** have used several methods to assess water resources vulnerability:overlay and index methods(59.4%),process-based models(12.5%),statistical methods(9.4%),overlay and index methods plus process-based model(9.4%),overlay and index methods plus statistical methods(6.3%)and statistical methods plus process-based models(3.1%).Geographic information system(gis)is an important tool in assessing the vulnerability of water resou

关键词： Water vulnerability water resources management water vulnerability assessment tools.

Use of Open Source Software for the Development of Web gis for Accessibility to Tourist Attractions

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Journal of Civil Engineering and Architecture 2013年第4期7卷 472-486页

作者： Maria Teresa Francoso Diogenes Cortijo Costa Mariana Mello Valin Rogerio Rodrigues Amarante department of Geotechnics and Transports School of Civil Engineering Architecture and Urban Design University of CampinasSao Paulo 13083-852 Brazil JBS S.A. Corporation Lins 16402-161 Brazil Campinas Town Hall Americana 13468-100 Brazil

Based on the concepts of social inclusion, universal design and accessibility, this paper aims to describe the stages of the development and implementation of a Web gis (geographic information system for the internet) based on OS (open source) software. The Web gis developed is called "accessibility to Campinas tourist attractions", which provides information about cultural and natural attractions in Campinas/SP-Brazil, especially for people with disabilities or reduced mobility that prevents access these sites via public and private transportation. The verification of the existence or lack of accessibility equipment at bus stops and parking areas close to tourist attractions relies on current legislation (NBR 9050/1994) that establishes the right to accessibility for disabled people to transportation, local culture and leisure. An application that facilitates this recognition with low operating costs and high performance was developed using the OS software Quantum gis 1.0.2, Apache 2.2.4, Mapserver 5.0.2, I3GEO 4.0, PostgreSQL 8.3 and Postgis 1.3.5. This software is able to integrate the management of tourist areas and the advertisement of tourist information regarding accessibility devices at sights recognized as tourist attractions by Campinas city hall.

关键词：旅游景点开源软件 gis Web PostgreSQL 地理信息系统操作系统软件应用程序开发

Creation of Data Specification for Geospatial Information in Albania on the Theme:“Geology”

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Journal of Environmental Science and Engineering(B) 2021年第2期10卷 55-64页

作者： Gëzim Tola Mikel Millja Bardhyl Muceku Standards of Geoinformation Sector State Authority for Geospatial Information(ASIG)Rr.“Papa Gjon PaliⅡ”Nr.3Kati 2Tirana 1001Albania department of Earth Sciences Faculty of Geology and MiningRruga e ElbasanitNr.1TiranaAlbania

The development of technology and the demands of groups of interest for standardized digital geospatial information are increasing *** necessity for referred geospatial information,according to a Referencing Coordinating System and European Standards,through a national gis(Geographic Information System)system,requires a decision making of national and institutional ***(State Authority for Geospatial Information)is the institution that administrates,implements,and maintains the NSDI(National Spatial Data Infrastructure).It is calculated that 80%of decision-making by public or private institutions uses geospatial data with a well-organized structure that enables ***,standardization of geospatial data by topic is one of the main objectives of implementing the NSDI in *** is a complex task for the standard and the harmonization of geospatial data,which can be a good opportunity for professional *** study shows in detail the methodology for the creation and implementation of data specification for geospatial information in Albania on the theme:Geology,adoption of the technical specification of the INSPIRE directive as well as the importance of ASIG as an institution that builds and maintains NSDI in Albania.

关键词： Geospatial data gis ASIG INSPIRE NSDI

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海洋环境污染保障系统（英文）

Marine Science Bulletin 2015年第2期17卷 56-67页

作者：宋军郭俊如牟林刘玉龙李琰袁泽轶李欢高佳王国松姚志刚国家海洋信息中心天津300171 中国海洋大学教育部物理海洋重点实验室山东青岛266100 School of Physical Environmental and Mathematical Sciences University of New South Wales College of Physical and Environmental Oceanography Ocean University of China department of Marine Earth and Atmospheric Sciences North Carolina State University

本文介绍了一个针对中国海域海洋环境污染保障系统的研究进展,并阐述中子活化分析(Neutron Activation Analysis,NAA)方法在其中的可能作用。该系统基于对海洋三维流场的预报与分析,对海洋污染物可能的扩散路径与影响区域、污染源头的... 详细信息

本文介绍了一个针对中国海域海洋环境污染保障系统的研究进展,并阐述中子活化分析(Neutron Activation Analysis,NAA)方法在其中的可能作用。该系统基于对海洋三维流场的预报与分析,对海洋污染物可能的扩散路径与影响区域、污染源头的可能位置进行推测,并结合gis技术整合相关的环境敏感信息,为如何使污染物造成的危害降到最低给出决策支持。基于该系统技术的渤黄海海洋污染物预测预警系统已经实现业务化运行多年,并在中国沿海污染事故应急中多次获得成功的经验。目前,针对重金属与放射性污染物的环境保障系统正处于理论实验阶段,由于NAA方法特别适合用于对部分重金属及放射性物质的检测,因此NAA方法对实现海洋重金属及放射性污染物的监测及预测预警具有非常重要的实用价值。

关键词：海洋污染中子活化分析海洋模型

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山西耕作土壤样品磁性空间分异及其环境意义

生物磁学 2006年第1期6卷 1-6页

作者：陈满荣俞立中张卫国许世远杨治平张永吉 S.M.Hutchinson 江苏省扬州大学环境科学与工程学院上海华东师范大学河口海岸国家重点实验室山西省太原市农业科学研究院土壤肥料研究所(山西太原030031) 山西省太原市土地管理局 Telford Institute of Environmental Systems Department of Environmental Resources University of Salford Salford M6 6PU UK

本文分析了山西高原土壤耕作层(0-20cm)25个样品的磁性,用gis空间分析方法,得出土壤磁化率平面分布等值线图和空间三维模型。磁化率空间分布机理如下:首先,强烈的人为影响使土壤中磁性矿物人为来源占有重要地位。第二,土壤磁性矿物以亚... 详细信息

本文分析了山西高原土壤耕作层(0-20cm)25个样品的磁性,用gis空间分析方法,得出土壤磁化率平面分布等值线图和空间三维模型。磁化率空间分布机理如下:首先,强烈的人为影响使土壤中磁性矿物人为来源占有重要地位。第二,土壤磁性矿物以亚铁磁性的磁铁矿和磁赤铁矿为主导。第三,土壤磁化率极值差及其与母质之间的差异均受广泛而较均一的黄土母质的影响。第四,晋西北和晋中等区域出现土壤磁化率高值区域。第五,人为作用强烈影响掩盖了气温、降水等气候因子对土壤磁化率的作用。

关键词：磁化率环境磁学土壤磁学山西