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HJ 724-2014 English PDF

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HJ 724-2014: Technical specification for environmental spatial data processing
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Basic data

Standard ID: HJ 724-2014 (HJ724-2014)
Description (Translated English): Technical specification for environmental spatial data processing
Sector / Industry: Environmental Protection Industry Standard
Word Count Estimation: 52,546
Date of Issue: 12/25/2014
Date of Implementation: 3/1/2015
Regulation (derived from): Ministry of Environmental Protection notice 2014 No. 87
Issuing agency(ies): Ministry of Ecology and Environment

HJ 724-2014: Technical specification for environmental spatial data processing

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Technical specification for environmental spatial data processing Technical specification for processing of environmental basic spatial data 2014-12-25 release 2015-03-01 Implementation Ministry of Environmental Protection released National Environmental Protection Standard of the People 's Republic of China Directory Preface ..II 1 Scope of application 1

2 normative reference documents

3 terms and definitions

4 General 2 5 Classification and Code 3 6 attribute data structure 5 7 Data organization and database naming rules 6 Data Layers and Naming Rules 9 symbol specification and basic color scheme ..12 10 Data Collection Update Rule 14 Data Quality Control Rules Appendix A (Normative Appendix) Environmental Public Space Data Classification and Code Table 17 Appendix B (normative) Environmental spatial data symbols and color scheme 23 Appendix C (informative) National Environmental Quality Examples 45 Appendix D (informative) Example of Environmental Quality in Chongqing Appendix E (Informative Annex) Example of National Environmental Functional Zoning 47 Appendix F (Informative Annex) Example of National Pollution Source Distribution Appendix G (Informative Appendix) Example of Pollution Source Distribution in Chongqing City

Foreword

To carry out the "Environmental Protection Law of the People's Republic of China" to promote environmental information work, regulate and guide the environmental base Processing of data between the work, the development of this standard. This standard specifies the commonly used environmental basic spatial data production data classification, attribute data description method, data organization, Storage format, data stratification, symbol specification, basic color scheme, data acquisition update rule, data quality control rules, etc. content. Annex A to this standard, Appendix B is a normative appendix, Appendix C, Appendix D, Appendix E, Appendix F, Appendix G is Information appendix. This standard is the first release. This standard is organized by the Ministry of Environmental Protection Science and Technology Standards Division. The main drafting of this standard. the Ministry of Environmental Protection Information Center, Jiangsu Province Environmental Information Center, Chongqing Environmental Protection Letter Interest center. The Environmental Protection Department of this standard approved on December 25,.2014. This standard is implemented on March 1,.2015. This standard is explained by the Ministry of Environmental Protection. Technical specification for processing of environmental basic spatial data

1 Scope of application

This standard specifies the commonly used environmental basic spatial data production data classification, attribute data description method, data organization, Storage format, data stratification, symbol specification, basic color scheme, data acquisition update rule, data quality control rules, etc. content. This standard is applicable to the processing of environmental basic spatial data in environmental information construction.

2 normative reference documents

The contents of this standard refer to the terms of the following documents. For those who do not specify a date, the valid version applies to this standard. Topographic specifications for aerial photogrammetry GB/T 7930-2008 1. 500 1. 1000 1..2000 Basic Geographic Information Element Classification and Code GB/T 13923-2006 GB/T 13989-2012 national basic scale topographic map Technical code for division of applicable area of urban area environmental noise GB/T 15190-1994 Terminology for geodetic survey GB/T 17159-2009 Digital specification for topographic map GB/T 17160-2008 1. 500 1. 1000 1..2000 Digital surveying and mapping results - Quality requirements GB/T 17941-2008 Global positioning system (GPS) measurement specification GB/T Digital topographic map series and basic requirements GB/T 18315-2001 Quality inspection and acceptance of digital surveying and mapping results GB/T 18316-2008 HJ 522-2009 Surface Water Environment Functional Area Category Code (Trial) Classification and code of environmental information HJ/T 417-2007 Code for design and operation of environmental database CJJ 8-2011 Urban Survey Specification Code for Digital Mapping of Aerial Photogrammetry

3 terms and definitions

The following definitions and definitions in GB/T 17159-2009 apply to this standard. 3.1 elevation datum The starting point of the measurement elevation determined by the average sea level of the particular tide station and the elevation of the origin according to the level determined by the surface. 3.2 depth datum sounding datum Calculate the starting plane of the depth of the water. Beijing Beijing Geodetic Coordinate System 1954 In 1954, China decided to adopt the national geodetic coordinate system (using Krassovsky ellipsoid), in essence, The union of the year of the extension of the 1942 coordinate system. Xi'an Ge coordinate System Using IAG 1975 international ellipsoid to JYD1968.0 system for the ellipsoid orientation benchmark, the choice of Shaanxi Province Jingyang County Yongle The town is the location of the earth's origin, the use of multi-point positioning established by the earth coordinate system. 3.5 WGS84 (1150) World Geodetic System 84 (1150); WGS84 (1150) Using the 1980 Earth reference system and BIH1984.0 point to the establishment of a polar reference system and the geocentric coordinate system. The normal radius of the earth's normal ellipsoid is 6 378 137m, the gravity constant is 3.986 004 418 × 1014m3 • s-2, the flat rate is 1/298.257 223 563, the Earth's angular velocity is 7.292 115 × 10-5rad • s-1. 3.6 National Geodetic Coordinate System China Geodetic Coordinate System.2000; CGCS2000 The origin is in the right hand of the center of the earth. The Z axis is the reference pole direction defined by the International Earth Initiative (IERS) The X-axis is the intersection of the reference meridian surface defined by the International Earth Initiative and the equatorial plane perpendicular to the Z-axis. The Y-axis and the Z-axis and X The axis forms the right hand orthogonal coordinate system. The normal ellipsoid of the earth has a radius of 6 378 137 m and a gravity constant of 3.986 004 418 × 1014m3 • s-2 with a flat rate of 1/298.257 222 101 and an earth angular velocity of 7.292 115 × 10-5 rad • s-1. 3.7 map projection map projection According to a certain mathematical law, the reference ellipsoid on the point, the line projected to the way on the exhibition. 3.8 Gauss-Kruger projection An isometric crossed elliptical projection. Its projection with a central meridian projection into a straight line and the length of the same, the equatorial projection has become Straight line and orthogonal to the central meridian projection line. 3.9 Lambert orthorhombic conical projection lambert orthomorphic conical projection An equilateral angle equidistant conical projection. The weft is a concentric circular arc, the warp is concentric radius. No angle change Shape, warp length ratio and weft length ratio are equal. 3.10 spatial data spatial data Data used to represent information about the location, shape, size, and distribution characteristics of a spatial entity are used to describe all Two-dimensional and multidimensional distribution of the phenomenon of the region. 3.11 attribute data attribute data Data describing the quality and quantity characteristics of geographic entities. 3.12 basic geospatial data Uniform spatial positioning framework and spatial analysis based spatial data, including measurement control points, the national basic scale scale Column topographic map data and other spatial data produced by mapping industry standards. 3.13 environmental basic spatial data Environmental protection departments and other relevant departments to collect, produce and process the spatial location of the environmental business data. 3.14 environmental thematic spatial data Based on the basis of environmental basic spatial data, according to the classification of environmental management business or focus on the performance of a subject content of the space data. 3.15 check all entry inspection Check the quality of all items required for the quality of the data. 3.16 Overview specific target inspection Check the specific inspection items required for the quality of the data.

4 General

4.1 Elevation datum and depth datum According to the relevant provisions of GB/T 18315-2001, the elevation reference adopts the "1985 National Elevation Benchmark", special circumstances Under 1. 500 ~ 1. 2 000 can be used independent of the Department of elevation. The depth datum generally uses the theory of the lowest tide. 4.2 Geographic coordinate system Geographic coordinate system can be used "1954 Beijing coordinate system", "1980 Xi'an coordinate system", "WGS84 (1150) (World Geodetic Coordinate System) or "2000 National Geodetic Coordinate System", of which the number of new productions after July 1,.2008 It is necessary to use the "2000 National Earth Coordinate System". 4.3 projection mode Determine the corresponding projection method according to different scale. A) 1. 1000000 electronic map using Lambert equiangular conical projection, according to 6 ° zoning; B) 1. 250000 ~ 1. 500000 electronic map using Gauss - Kruger projection, according to 6 ° zoning; C) 1. 5000 ~ 1. 10000 electronic map using Gauss - Kruger projection, according to 3 ° zoning; D) 1. 500 ~ 1..2000 electronic map using Gauss - Kruger projection, according to 3 ° zoning. Also according to actual needs, Using any longitude as the independent coordinate system of the central meridian.

5 classification and code

5.1 Classification method The environmental basic spatial data are classified by the line classification method according to the categories, categories, middle classes and subclasses. 5.2 categories The environmental basic spatial data is divided into three categories. basic terrain data, environmental public space data and remote sensing image data. Figure 1 shows. Figure 1 Environment-based spatial data categories 5.3 categories 5.3.1 Basic terrain data classification Basic terrain data using GB/T 13923-2006 in the classification method, as shown in Figure 2. Figure 2 Basic terrain data classification 5.3.2 Remote sensing image data classification The classification of remote sensing image data is shown in Fig. According to remote sensing image data Environmental public space data Basic terrain data Î. 6 DB Water system traffic State and politics Residential and facilities Pipeline Geomorphology Vegetation and soil Figure 3 Remote sensing image data classification 5.3.3 Environmental public space data classification According to HT522-2009 and HJ/T 417-2007 environmental public space data classification shown in Figure 4. Figure 4 Environmental public space data classification 5.4 Medium and subclasses Comparing the classification requirements of HJ/T 417-2007 in class and subclasses of environmental basic spatial data, see Appendix A. 5.5 encoding method For the basic terrain data, environmental public space data and remote sensing image data to establish the code, the code by 1 large English Letters and six digits, the structure shown in Figure 5. X XX XX XX Figure 5 Environment-based spatial data coding structure The first bit represents the category, identified by an uppercase letter. A is the terrain data, B is the environment public space data, C for remote sensing image data; Second, three that large class, with two digits 00-99 said; Fourth, five said in the class, with two digits 00-99 said; Sixth, seven said small class, with two digits 00-99 said. Environmental function zoning Other environmental public space data Environmental protection - related spatial data Environmental Quality Source of pollution ecosystem Aerial imagery Aerial image In the class Big class Category Small class Basic terrain data code with reference to GB/T 13923-2006 to prepare, which large class code from GB/T 13923-2006 Large class code before the composition of 0, the class code from GB/T 13923-2006 in the class code before the composition of 0, small class code with GB/T 13923-2006 small class code. Such as the base terrain data of the perennial river, encoded as A020101. The need to expand the basis of the basis of this new terrain data and environmental public space data, in principle, from the code The minimum value is incremented by increment. After the expansion of environmental basic spatial data, it should be filed in this standard focal point. 5.6 classification code table Environmental public space data classification and code table see Appendix A, basic terrain data classification and code table in accordance with GB/T Classification of Geographic Information Elements at Different Levels and Code Execution.

6 attribute data structure

6.1 attribute data item classification 6.1.1 Classification principles According to the natural attributes, social attributes and management attributes of the geographic entity, the attribute data items are classified into basic attribute data items. Display attribute data items, business-specific attribute data items, as shown in Figure 6. Figure 6 attribute data item classification 6.1.2 Basic attribute data item 6.1.2.1 Basic attribute data item Description Geographic entity Identifies the attribute, attribute data item of the geometric feature. 6.1.2.2 Basic attribute data items include. A) Identifier code attribute data item. Used to identify the coding of the geographic entity in the layer. B) Geometric characteristics Attribute data item. 1) Area of the planar geographic entity. the area of the recording system; 2) the length of the linear geographic entity. the length of the recording system calculation; 3) Perimeter of geographic entity. Record the length of the system calculation. 6.1.3 Extended attribute data items 6.1.3.1 Scalability attribute data items are attribute data used to describe geographic entity class characteristics, description information, relationship characteristics Basic attribute data item Extended attribute data item Business-specific attribute data item Identifier attribute data item Geometric feature attribute data item Classification of attribute data items Description Information attribute data item Associated feature attribute data item Geographic Associated Attribute Data Item Business attribute attribute data item item. 6.1.3.2 Extended attribute data items include. A) Classification of attribute data items. 1) Classification code. According to the environmental basic spatial data classification and code to determine the geographical entity belongs to the type of generation code; 2) GB code. national or industry standards exist in the geographical entity related category code. B) Description Information Attribute Data item. 1) Name. The name of the Chinese entity of the geographical entity should generally be determined by the name of the relevant state department; 2) Type. the nature of the nature of the entity that should generally be determined by the relevant state departments shall prevail; 3) Administrative departments in charge of environmental protection. the name of the administrative department of environmental protection where the geographical entity is located, Generally can be detailed to the county level environmental protection administrative departments. C) Associated Feature Attribute Data Item. 1) Spatial topology description. The extended data item necessary to identify the spatial topology of the local entity; 2) Update Time. Updated to identify this geographical entity. 6.1.4 Business-specific attribute data items 6.1.4.1 Service-specific attribute data Item Description Geographic entity and business management Associated characteristics, attribute data of business management characteristics , Usually refers to the number of business attributes that the specific business unit assigns to the object for the purpose of managing the object According to item. 6.1.4.2 Service-specific attribute data items include. A) Geographic Associated Attribute Data Item. 1) Geographic information association Unique identification code. unique identification code associated with business-specific data and geographic information; 2) Associated service-specific data items. One or more data items in the business-specific data item as keywords, each A unique identification data item for business-specific data. B) Business-specific data items. management information for business-specific departments, its identification, scheduling, accuracy, etc. by the business Developed by department. 6.2 Attribute Data Item Name of the field name 6.2.1 naming methods Using the Chinese phonetic alphabet combination method for attribute data item field name naming, that is, the field name by the attribute name The first letter of each Chinese phonetic alphabet combination. In the event of an unavoidable repetitive naming, the attribute data item word should be used Paragraph of the Chinese name of the first Chinese characters plus the remaining Chinese characters combination of the first letter of the additional rules, and so on, until the name is no repeat. 6.2.2 naming constraints A) the field name does not exceed 30 characters; B) if the property field with Arabic numerals, and its attribute naming directly in the Arabic numerals; C) The name of the field that has been defined in the country or industry standard can be used directly. Data organization and database naming rules 7.1 Data organization 7.1.1 Data organization structure 7.1.1.1 Organizational structure of basic terrain data and environmental public space data The basic terrain data and the environment public space data are organized according to the structure shown in Figure 7. A) the database consists of one or more sub-libraries; B) the sub-library consists of one or more data sets with the same spatial coordinate system; C) The data set consists of one or more hierarchical data. Figure 7 Organizational structure of basic terrain data and environmental public space data 7.1.1.2 Organization of remote sensing image data Remote sensing image data in the database using the raster catalog design, a grid directory to store multiple rasters body. 7.1.2 Data storage and management Based on the business relational database and spatial database engine to establish the environment spatial database, to achieve environmental basic spatial data Storage and management. 7.1.3 Organization of data sets The data sets are organized according to the categories of environmental basic spatial data, and the basic terrain data and environmental public space data are Category organization-based terrain data set, environmental public space data set and remote sensing image data set. 7.1.4 Organization of layers and partitioned data A layer of data should be stored in a single data table for management. In the case of large amounts of data, you can Data table for partition storage, partition in accordance with the spatial distribution. 7.2 Database naming rules The database naming is performed in accordance with the specific requirements of 4.7.1 in HJ/T 419-2007, named DB_ < database identifier Example.......
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