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HJ 927-2017: Technical specification for environmental thematic -- Spatial data processing
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| HJ 927-2017 | English | 489 |
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Technical specification for environmental thematic -- Spatial data processing
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HJ 927-2017
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Standard similar to HJ 927-2017 HJ 511 HJ 945.3 HJ 943 Basic data | Standard ID | HJ 927-2017 (HJ927-2017) | | Description (Translated English) | Technical specification for environmental thematic -- Spatial data processing | | Sector / Industry | Environmental Protection Industry Standard | | Word Count Estimation | 20,231 | | Date of Issue | 2018-01-02 | | Date of Implementation | 2018-03-01 | | Regulation (derived from) | Ministry of Environmental Protection Bulletin No. 2018 2 | | Issuing agency(ies) | Ministry of Ecology and Environment | HJ 927-2017: Technical specification for environmental thematic -- 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.
People's Republic of China national environmental protection standards
Technical specification for environmental thematic spatial data processing
2018-01-02 released
2018-03-01 implementation
Directory
Foreword .ii
1 Scope 1
2 Normative references 1
3 Terms and definitions .1
4 environmental topics spatial data processing general process 2
5 Environmental Thematic Spatial Data Schematic Approach .3
6 Environmental Thematic Spatial Data Classification 5
Appendix A (informative) Environmental topics Spatial data symbols and color schemes 8
Appendix B (Informative) Surface Water Environment Functional Zoning Example .12
Appendix C (informative) Example of ambient air quality distribution 13
Appendix D (Informative) Examples of Industrial Pollution Sources Distribution .14
Appendix E (Informative) Examples of Venture Distribution .15
Appendix F (informative) Nature Reserve Distribution Example .16
Foreword
This standard is formulated and formulated for the purpose of implementing the Law of the People's Republic of China on Environmental Protection, promoting environmental informationization, standardizing and guiding the processing and handling of spatial data on environmental topics.
This standard Appendix A, Appendix B, Appendix C, Appendix D, Appendix E and Appendix F are informative appendices.
This standard is released for the first time.
This standard is formulated by the General Office of the Ministry of Environmental Protection and the Scientific and Technical Standards Department.
This standard is mainly drafted by. Environmental Protection Department Information Center, Chongqing Environmental Protection Information Center, Chongqing Digital City Technology Co., Ltd..
This standard MEP approved on January 2,.2018.
This standard since March 1,.2018 into effect.
This standard is responsible for the interpretation of the Ministry of Environmental Protection.
Technical specifications for processing and processing of environmental special thematic space data
1 scope of application
2 Normative references
This standard references the terms of the following documents. For undated references, the effective version applies to this standard.
GB 3095 ambient air quality standards
GB/T 15190 acoustic environment functional area classification technical specifications
GB/T 16820 map academic language
HJ/T 416 Environmental information Terminology
HJ/T 417 Environmental Information Classification and Codes
HJ 522 Surface Water Environment Functional Area Category Codes (Trial)
HJ 633 Ambient Air Quality Index (AQI) Technical Regulations
HJ 724 Environmental Basic Spatial Data Processing Specification
Technical Specification for Assessment of Environmental Protection of Centralized Drinking Water Sources Area
Technical Specification for LY/T 1764 Nature Reserve Functional Zoning
3 Terms and definitions
The following terms and definitions apply to this standard.
3.1
Spatial data Spatial data
3.2
Thematic map thematic map thematic map
A map that focuses on one or more elements of a natural or social phenomenon.
3.3
Environmental Basis Spatial Data Environmental Basis Spatial Data Environmental Basis Spatial Data Environmental Basis Spatial Data
The environmental business data collected, produced and processed by the environmental protection department and other relevant departments in a spatial location.
[HJ 724 [HJ 724 [HJ 724 [HJ 724, Definition, Definition 3.13] 3.13]
3.4
Environmental topics Spatial data Environmental topics Spatial data Environmental topics Spatial data Environmental topics Spatial data
Based on the data of environmental basic spatial data, the spatial data of a certain kind of thematic contents are concentratedly classified or graded according to the environmental management business.
[HJ 724 [HJ 724 [HJ 724 [HJ 724, Definition, Definition 3.14] 3.14]
4 environmental topics spatial data processing general process
Environmental topics Spatial data processing Common processes include. thematic space data preparation and design; editing and production; thematic map finishing.
4.1 Preparation and Design Preparation and Design
Preparation and design of environmental thematic space data before editing and preparation include.
a) Determine the topics and contents of the map according to the purpose and purpose of cartography of thematic space data;
d) Information on the collection, processing, processing and analysis of thematic space data on the environment;
e) Understand the characteristics and distribution of drawing areas or drawing objects;
f) Selection of presentation methods and legend symbols based on the type and characteristics of thematic data.
4.2 editing and production
1) The distribution area is small or dotted distribution, such as the distribution of pollution sources;
2) linear or banded distribution, such as traffic noise pollution sources;
3) discrete or continuous surface distribution, but also can be divided into. a) discontinuous and distributed in the vast area of the film, such as nature reserves, red lines and other ecological protection; b) scattered in a large area, such as environmental functions Zoning and so on.
According to the spatial characteristics of environmental thematic data, reference may be made to the environmental thematic spatial data symbols and color schemes in Appendix A when making the thematic maps. For the common environmental thematic maps, refer to Appendix B, C, D, E and F.
4.2.4 Environmental Topics Spatial Data Performance Environmental Topics Spatial Data Performance Environmental Topics Spatial Data Performance Environmental Topics Spatial Data Performance Environmental Topics Spatial Data Performance
Environmental thematic spatial data is recommended to use geometric notation, with the following composition methods.
1) contour changes. the outline of the thickness, the actual situation and structural changes;
2) Internal structural changes. Additional lines and graphics on the basis of geometric contours
3) the direction of change. the rotation of the symbol deformation;
4) deformation. a geometry can evolve multiple graphics;
5) Combination. Several geometric figures can be combined together to form a graphical symbol;
6) Color. The same symbol gives different colors, representing different meanings.
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