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质量是地理国情普查的根本,地理国情普查的成败关键在于质量。依据国家相关标准、地理国情普查相关技术规程,分析地理国情普查过程中影响质量的主要因素,对地理国情普查质量控制方法进行讨论。 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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李颖 《测绘与空间地理信息》2016,(7):152-154
地理国情普查是新形式下测绘行业的一项重要任务,开展地理国情普查可以全面了解我国的国情、国力,为全面开展地理国情监测打好基础。地理国情普查中地表覆盖是其中很重要的一部分。文中以辽宁省第一次全国地理国情普查地表覆盖数据采集为依据,说明了地理国情普查的重要意义,总结了地理国情普查地表覆盖数据采集的操作路线,概括了地理国情普查地表覆盖数据采集的常见问题,并分析了问题存在的原因和解决办法。地表覆盖数据的准确性提高了,地理国情普查后期的统计数据才会更真实。 相似文献
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地理国情普查是地理国情监测的基础,普查数据的质量水平关系到地理国情监测的工作成效。因此,作为地理国情普查底图的DOM成果的几何精度和影像质量是影响地理国情普查成果质量的关键因素。 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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马婉婷 《测绘与空间地理信息》2016,(1)
地理国情普查数据库建设是第一次全国地理国情普查工作的重要组成部分。地理国情普查数据库是进行地理国情统计分析的基础,也是今后开展地理国情监测的本底数据库,由国家和省分级建设。本文主要介绍了国家对省级地理国情普查数据库的基本要求,以及辽宁省地理国情普查数据库建设的目标、系统架构、关键技术、概念模型与逻辑设计、功能设计和数据库的运行环境等内容。 相似文献
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This paper first briefly looks back on the history of census GIS around the world, and then summarizes some preponderances of developing urban census GIS in China. And then a three-tier construction architecture for the urban census GIS is proposed. Finally, using the illustration of the census data of Guangzhou city, the paper analyzes and elaborates some issues on the urban census GIS designing, such as data management, data warehouse building, and data analysis. 相似文献
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WANG XinzhouLIU ZongweiCHEN Shunqing 《地球空间信息科学学报》2001,4(4):25-31,42
1 IntroductionThe 5thNationalCensusofChinawascom mencedonNovember 1st 2 0 0 0 .Itiswell_knownthatcensusdataarenotonlyverynecessarytoservemacroscopicalstrategiesofthestate,butalsoextremelyvaluableforthedecision_makingoflocalgovernmentsandeven privatesectors .By… 相似文献
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地理的国情是一种可视化和空间化的基本国情信息,开展地理国情的普查工作是提升各级政府公共服务水平和能力的一项重要的举措。根据国务院总体的安排部署,自2013年起我国全面开展首次地理国情的普查工作。本文简要介绍了地理国情普查工作的相关情况,提出了保障地理国情普查工作成果的对策和建议,希望对地理国情的普查工作能够有所借鉴。 相似文献
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《制图学和地理信息科学》2013,40(2):103-121
This paper describes techniques to compute and map dasymetric population densities and to areally interpolate census data using dasymetrically derived population weights. These techniques are demonstrated with 1980-2000 census data from the 13-county Atlanta metropolitan area. Land-use/land-cover data derived from remotely sensed satellite imagery were used to determine the areal extent of populated areas, which in turn served as the denominator for dasymetric population density computations at the census tract level. The dasymetric method accounts for the spatial distribution of population within administrative areas, yielding more precise population density estimates than the choroplethic method, while graphically representing the geographic distribution of populations. In order to areally interpolate census data from one set of census tract boundaries to another, the percentages of populated areas affected by boundary changes in each affected tract were used as adjustment weights for census data at the census tract level, where census tract boundary shifts made temporal data comparisons difficult. This method of areal interpolation made it possible to represent three years of census data (1980, 1990, and 2000) in one set of common census tracts (1990). Accuracy assessment of the dasymetrically derived adjustment weights indicated a satisfactory level of accuracy. Dasymetrically derived areal interpolation weights can be applied to any type of geographic boundary re-aggregation, such as from census tracts to zip code tabulation areas, from census tracts to local school districts, from zip code areas to telephone exchange prefix areas, and for electoral redistricting. 相似文献
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叶柯 《测绘与空间地理信息》2018,(1):90-93
以江西省某县地理国情普查数据为基础,研究其与土地变更调查数据的相似性与差异性,结合土地资源监测的热点,初步探究地理国情普查成果在土地资源监测中应用,为地理国情普查成果应用提供思路与方向。 相似文献
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《International Journal of Digital Earth》2013,6(12):989-1006
Interactions between humans, diseases, and the environment take place across a range of temporal and spatial scales, making accurate, contemporary data on human population distributions critical for a variety of disciplines. Methods for disaggregating census data to finer-scale, gridded population density estimates continue to be refined as computational power increases and more detailed census, input, and validation datasets become available. However, the availability of spatially detailed census data still varies widely by country. In this study, we develop quantitative guidelines for choosing regionally-parameterized census count disaggregation models over country-specific models. We examine underlying methodological considerations for improving gridded population datasets for countries with coarser scale census data by investigating regional versus country-specific models used to estimate density surfaces for redistributing census counts. Consideration is given to the spatial resolution of input census data using examples from East Africa and Southeast Asia. Results suggest that for many countries more accurate population maps can be produced by using regionally-parameterized models where more spatially refined data exists than that which is available for the focal country. This study highlights the advancement of statistical toolsets and considerations for underlying data used in generating widely used gridded population data. 相似文献
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地理国情普查标准时点核准是对普查成果进行补充和完善,在发现普查及核准阶段成果变化的同时,找出由于当时所用资料的时效性和外业核查时的局限性而导致的遗漏或错误,从而进行填充和变更工作。本文通过标准时点普查与核准期间发现的变化,对影像精度检测、核准数据生产,以及元数据变更等情况进行了分析,提出了几点建议,供今后工作借鉴。 相似文献
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为保证云南省第一次全国地理国情普查成果质量,根据地理国情普查成果的技术要求,基于Arc GIS桌面平台Arc Objects开发接口,采用Add-in开发模式,设计出一套符合地理国情普查质量检查验收的软件功能模块,可将大部分数据质量检验工作实现自动化。对提高普查成果检验的准确性和工作效率,控制普查成果的质量有现实意义。 相似文献