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随着各市县地理国情普查工作的逐步完成,普查产生了多样化类型成果数据。然而,当前地理国情普查信息化中,不同类型的成果数据通过不同系统管理,能力单一、应用简单,无法发挥地理国情普查成果数据的巨大价值。据此,设计了市县地理国情普查成果应用平台,依托数字城市建设成果,围绕"库"(普查数据库)、"图"(专题地图)、"表"(基本统计表)、"文"(成果文档)实现了普查成果发布、展示、管理等功能,为地理国情普查成果查询、统计与分析提供软件支撑,拓展了地理国情普查成果的使用范围,提高了地理国情普查成果的应用价值。 相似文献
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质量是这次地理国情普查成果的重要保障,基本统计是地理国情普查工作中的重要环节,基本统计的正确、准确决定了第一次全国地理国情普查成果数据的权威性、客观性及系统性,只有保证了生产数据的质量,才能为国家提供高质量的自然地理信息,社会人文性息,进而推动节约型、生态型的社会建设.地表覆盖分类数据的釆集精度,面重叠、面裂隙造成的拓朴关系错误以及地表分类代码的判读错误,会影响基本统计成果的正确性,同时地理国情要素数据中水域水网、交通路网不通连,各要素属性不正确,专业资料不准确或要素间关系不合理等现象,会造成统计结果的混乱和不完整,自此地理国情普查生产数据质量好与差对第一次全国地理国情普查这一任务的胜利完成起着重要作用. 相似文献
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利用地理国情基本统计分析软件对地理国情普查预处理后数据进行基本统计分析。根据基本统计结果、基本统计汇总表及统计报告,制作行政区划四至点、高程分级、坡度分级、水域分布、水域统计、铁路与道路、行政村驻地分布图,并对地理国情普查成果及统计分析成果的应用推广服务提出建议。 相似文献
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地理国情基本统计是利用地理国情普查成果数据中的地表覆盖数据、国情要素数据、DEM数据进行综合统计分析。本文简单论述了地理国情统计分析的作业流程以及具体的操作方法。 相似文献
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以黑龙江省地理国情普查成果数据为基础,分析现有技术规范中地理国情基本统计分析成果与地图统计表达形式的关联关系,设计构建地理国情基本统计分析成果在线地图表达指标体系表,并基于"天地图"地理信息公共服务平台,研究地理国情基本统计成果的动态组合表达、多角度展示与灵活应用。 相似文献
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地理国情普查基本统计工作需对地理国情普查数据进行提取、汇总和分析。通过采用Excel VBA编写的两个工具,将地理国情基本统计软件V1.1生成的报表自动填写到基本统计报告中,避免了人工填写易出错的弊端,且减少了工作量,展示了Excel在测绘工作中的应用前景。 相似文献
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分析了地理国情普查与第三次农业普查的相关性,总结了地理国情普查成果在农业普查中的应用切入点,研究了地理国情普查成果及相关数据在第三次全国农业普查遥感测量工作不同阶段的应用方式,拓宽了地理国情成果的应用领域,为今后地理国情成果的转化工作提供了思路与参考。 相似文献
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黄运能 《测绘与空间地理信息》2018,(3):106-108
阐述了地理国情、地理国情普查数据成果的基本内容,详细地论述了基于地理国情普查数据成果开展荒漠与裸露地的监测方法,主要包括资料收集与分析、基础数据整合及预处理、解译提取、基本统计分析及综合统计分析等方法。并以新疆维吾尔自治区阿勒泰地区富蕴县恰库尔图镇为研究示范区,介绍了利用地理国情普查数据成果、基础地理信息数据等数据源,开展相关研究的情况,并展示部分研究成果。最后展望了地理国情监测技术服务国家生态文件建设的应用前景。 相似文献
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地理国情普查成果建库是地理国情监测的重要工作内容,可以有效地推动地理国情统计分析工作及地理国情监测各项业务的开展。本文在分析地理国情普查数据建库需求的基础上,设计了地理国情普查数据库的结构,以厦门为例,开发了地理国情普查数据库管理系统,实现了试点普查成果的建库和集中管理,为福建省后续地理国情普查成果的建库奠定了良好的基础。 相似文献
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采用Landsat TM数据分析了阿克苏河—塔里木河断面水质污染状况,通过波段的DN值和常规监测数据建立能反映水质状况的
污染物监测模型。结果发现,将2000年常规监测数据代入模型后,与遥感数据的结果基本吻合| 重建阿克苏河—塔里木河的连续水体
污染变化曲线,得出污染物浓度随着远离上游而增加。 相似文献
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Monitoring drought dynamics in the Aravalli region (India) using different indices based on ground and remote sensing data 总被引：5，自引：0，他引：5
C. Bhuiyan R.P. Singh F.N. Kogan 《International Journal of Applied Earth Observation and Geoinformation》2006,8(4):289-302
The hard-rock hilly Aravalli terrain of Rajasthan province of India suffers with frequent drought due to poor and delayed monsoon, abnormally high summer-temperature and insufficient water resources. In the present study, detailed analysis of meteorological and hydrological data of the Aravalli region has been carried out for the years 1984–2003. Standardised Precipitation Index (SPI) has been used to quantify the precipitation deficit. Standardised Water-Level Index (SWI) has been developed to assess ground-water recharge-deficit. Vegetative drought indices like Vegetation Condition Index (VCI) and Temperature Condition Index (TCI) and Vegetation Health Index (VHI) have been computed using NDVI values obtained from Global Vegetation Index (GVI) and thermal channel data of NOAA AVHRR satellite. Detailed analyses of spatial and temporal drought dynamics during monsoon and non-monsoon seasons have been carried out through drought index maps generated in Geographic Information Systems (GIS) environment. Analysis and interpretation of these maps reveal that negative SPI anomalies not always correspond to drought. In the Aravalli region, aquifer-stress shifts its position time to time, and in certain pockets it is more frequent. In comparison to hydrological stress, vegetative stress in the Aravalli region is found to be slower to begin but quicker to withdraw. 相似文献
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Piyoosh Rautela Ramesh Chandra Lakhera 《International Journal of Applied Earth Observation and Geoinformation》2000,2(3-4)
The area around Sataun in the Sirmur district of Himachal Pradesh, India (falling between the rivers Giri and Tons; both tributaries of the Yamuna River) was studied for landslide vulnerability on behalf of the inhabitants. The study was made using extensive remote sensing data (satellite and airborne). It is well supported by field evidence, demographic and infrastructural details and aided by Geographic Information System (GIS) based techniques. Field observations testify that slope, aspect, geology, tectonic planes, drainage, and land use all influence landslides in the region. These parameters were taken into consideration using the statistical approach of landslide hazard zonation. Using the census data of 1991, vulnerability of the populace to the landslide hazard was accessed. As most of the infrastructure in the region is concentrated around population centres, population data alone was used for vulnerability studies. 相似文献
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ZHAN F. Benjamin 《地球空间信息科学学报》2011,(1)
Although it is well known that coseismic gravity changes take place during an earthquake, previous research has not yielded convincing evidence demonstrating that significant gravity changes occur before large earthquakes. Furthermore, even if we suspect that gravity changes occur before large earthquakes, we have yet to demonstrate how to consistently observe these changes for useful earthquake forecast that would bring benefits to society. We analyzed ground gravity survey data obtained in 1998, 2000, 200... 相似文献
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GNSS系统及其技术的发展研究 总被引：3，自引：1，他引：2
阐述了国际上卫星导航系统的总体发展,对美、俄、欧、中的四大全球系统,以及相关的区域系统和增强系统进行了简单的介绍,研究分析了GNSS系统及其技术的发展趋势,同时分析了我国Compass全球系统面临的机遇和挑战,并提出了我国未来工作的建议. 相似文献
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“4D”技术及其应用 总被引：13，自引：0，他引：13
介绍“４Ｄ”（即数字地面模型、数字正射影像、数字栅格地图和数字线划地图）系列产品的生产流程、关键技术、及其在耕地保护、防灾减灾救灾和城市规划等方面的应用方法。 相似文献
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《International Journal of Digital Earth》2013,6(1):66-87
Abstract Virtual Australia is not a well-defined or agreed concept. This discussion paper conceptualises Virtual Australia as a ‘virtual [digital] model containing and representing all non-trivial objects and their contextual environment – from blue sky to bedrock – in real world Australia’. It describes a scenario for Virtual Australia, one or two decades from now, in which the locations and conditions of non-trivial objects and their environment are updated automatically through a combination of remote sensing and wireless communication technologies in support of a ‘Supranet’. It then examines the concept of the ‘Supranet’ – a pervasive information network based largely on wireless technology linking the physical world to a virtual model in real time – and develops and discusses three principal characteristics of the Supranet: the ability to have or collect specific information (know); the ability to process information (think); and the ability to communicate that information. If, in the near future, any or all non-trivial devices are to some extent able to know, think and communicate, the potential for object autonomy will be realised. 相似文献
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自动车辆定位导航系统中传感器的误差分析 总被引：1，自引：0，他引：1
对国界定位导航系统中几种常见的辅助传感器所产生的误差进行了分析，导出了不同传感器的误差模型。这些误差模型是估计车辆位置的扩展卡尔曼滤波器的基础，同时也为选择适当的传感器提供了理论根据。 相似文献