摘要
全球30 m分辨率人造地表覆盖数据集(2010)是国家基础地理信息中心领衔的团队自2009-2014年研发的数据集。该数据集是全球30 m分辨率土地覆盖数据集(2010)的一部分,是反映人类居住、工矿、商业、交通等用地类型和人类生活场所、操作空间和工程的载体的数据集。人造地表覆盖类型的空间分布客观地反映了人类社会的资源配置、产业布局和经济状况。本文论及的数据集依托全球地表覆盖遥感制图项目,包括9,907景美国陆地资源卫星(Landsat)TM5、ETM+多光谱影像数据和2,640景环境减灾卫星(HJ-1)多光谱影像数据。在基于卫星遥感数据基础上的土地覆盖分类信息提取过程中,人造地表覆盖类型的识别和信息提取是最复杂的。其主要原因是人造地表覆盖多以复合像元、镶嵌交错、零碎分散等方式布局。全球30 m分辨率人造地表覆盖数据集(2010)的研发是根据人造地表覆盖在卫星遥感影像上反映的光谱、形态特征的多样性和复杂性,综合利用现有的分类技术,将像元分类器、对象分割和知识化判别有机结合,采取了基于"像元-对象-知识"的POK(Pixel-Object-Knowledge)分类方法完成。该数据经过部分地区的抽样检验,全部数据8 GB。为了便于用户获取和网络共享,数据集采用分幅方式组织数据文件。分幅规则为在南北纬60°区域内按照5°(纬度)×6°(经度)分幅,计674个数据文件组;在北纬60°至80°区域内,按照5°(纬度)×12°(经度)进行分幅(南极大陆没有包括在内),计76个数据文件组。按奇数6°带的中央经线进行投影。全球数据总计分成750幅,即组成750个数据文件组,每个数据文件组包含了4个数据文件,它们分别是:(1)实体数据文件(Geo TIFF栅格数据格式);(2)坐标信息文件(TIFF WORD格式);(3)分类基础影像接图表文件,记录分类所用的主要影像每景范围及获取时间的矢量图层文件(Shapefile格式);(4)元数据文件(XML格式)。此外,数据集中包括一个附件数据文件,该文件列出759个数据文件组包括的数据文件名称、对应的地理坐标和分带编码等信息。全球变化科学研究数据出版系统和天地图系统提供开放、公益性下载服务。
Global Artificial Land Surface Dataset at 30 m Resolution(2010) is one of the ten coverages of Global 30 m Resolution Datasets of Land coverage 2010, reflecting the dataset of the carrier for types of land use such as human settlements, industrial and mining, commercial and transportation areas and for human living place, operation space and engineering. The spatial distribution of artificial surface coverage types objectively reflects the resources allocation, industrial layout and economic conditions of human society. This paper deals with a dataset relying on the remote sensing mapping project of global land surface coverage, including USA’s earth resources technology satellite(Landsat) TM5, ETM+ multi-spectral image data of 9,907 Scenes and the multispectral image data of 2,640 Scenes from China’s environment disaster mitigation satellite(HJ-1). In the process of land cover classification information extraction based on satellite remote sensing data, to identify types of artificial surface coverage as well as to extract their information is one of the most complicated jobs. Its main reason is that the artificial surface coverage mostly appears in the form of layouts such as composite pixels interlocking and interlacing and fragmentary scattering. Based on the diversity and complexity of spectrums and morphological characteristics reflected by the artificial surface coverage on the satellite remote sensing image, the research and development of Global 30 m Resolution Dataset of Artificial Surface Coverage 2010 are completed by comprehensively utilizing the existing classification technology to organically combine the pixel classifier, object segmentation and knowledge-based discrimination and by taking the POK(Pixel-Object-Knowledge)-based classification method. This data is obtained after the sampling inspection on some regions, all of which occupy a memory space of 8 GB. For convenient access and network sharing, data files in the dataset are organized by way of framing. Framing rules are defined as: framing as per 5°(latitude) × 6°(longitude) within the region from 60° SL to 60° NL, with a total of 674 sets of data files;framing as per 5°(latitude) × 12°(longitude) within the region from 60° NL to 80° NL(the Antarctic continent excluded), with a total of 76 sets of data files;projecting as per the central meridian of odd 6° zones. Global data is divided into 750 frames in total, namely forming 750 sets of data files, each of which contains 4 data files, and they are respectively:(1) an entity data file(Geo TIFF raster data format);(2) a coordinate information file(TIFF WORD format);(3) a classified elementary images map file, i.e., a vector layer file recording the scope per scene and acquisition time of elementary images used in the classification(Shape file format);and(4) a metadata file(XML format). In addition, the dataset includes an attachment data file, which lists data file name, corresponding geographic coordinates and zoning codes and other information included in 759 sets of data files. Global Change Research Data Publishing & Repository and Map World System will provide the open and public-welfare download service.
作者
陈军
廖安平
陈利军
张宏伟
何超英
彭舒
武昊
张委伟
李然
郑新燕
梅洋
陆苗
鲁楠
康睿
邢华侨
刘丽芬
韩刚
王京
杨爱玲
孙丽梅
宋昊
陈卫平
周晓敏
夏露
蒋红兵
霍健
张艳
刘无敌
李雨鲜
翟亮
桑会勇
Chen J.;Liao A.P.;Chen L.J.;Zhang H.W.;He C.Y.;Peng S.;Wu H.;Zhang W.W.;Li R.;Zheng X.Y.;Mei Y.;Lu M.;Lu N.;Kang R.;Xing H.Q.;Liu L.F.;Han G.;Wang J.;Yang A.L.;Sun L.M.;Song H;Chen W.P.;Zhou X.M.;Xia L.;Jiang H.B.;Huo J.;Zhang Y.;Liu W.D.;Li Y.X.;Zhai L.;Sang H.Y.(National Geomatics Center of China,Beijing 100830,China;Geo-Compass Geoinformation Technology Company,Beijing 100048,China;Heilongjiang Geomatics Center of NASG,Harbin 150086,China;The First Institute of Photogrammetry and Remote Sensing,National Administration of Surveying,Mapping and Geoinformation of China(NASG),Xi’an 710054,China;Sichuan Surveying and Mapping Institute of Remote Sensing Information,Chengdu 610100,China;Chinese Academy of Surveying and Mapping,Beijing 100830,China)
出处
《全球变化数据学报（中英文）》
2017年第2期136-148,155-167,共26页
Journal of Global Change Data & Discovery
基金
中华人民共和国科学技术部(2013AA122802,2009AA12001,2009AA122003)
国家自然科学基金(41231172)
关键词
全球地表覆盖
人造地表
30
m分辨率
POK方法
2010年
global land cover
artificial surface coverage
30 m resolution
POK method
remote sensing mapping
作者简介
通讯作者:陈利军,L-4546-2016,国家基础地理信息中心,chenlj@nsdi.gov.cn
