This standard specifies the names and codes of terrestrial climate zones and climate regions in the classification system of China's climate zones. This standard applies to the identification of climate information in the process of resource and environmental investigation and analysis, information summary and statistics, information exchange and processing, utilization of climate resources, and disaster prevention and mitigation by relevant departments according to climate zones. GB/T 17297-1998 Names and codes of climate zones and climate regions in China's climate zones GB/T17297-1998 Standard download decompression password: www.bzxz.net
This standard specifies the names and codes of terrestrial climate zones and climate regions in the classification system of China's climate zones. This standard applies to the identification of climate information in the process of resource and environmental investigation and analysis, information summary and statistics, information exchange and processing, utilization of climate resources, and disaster prevention and mitigation by relevant departments according to climate zones.
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CB/T172971998 This standard names and codes the land climate zones and climate regions of China's climate zoning. The purpose is to unify the identification of climate information to meet the application needs of various relevant departments for the exchange, aggregation, retrieval and other applications of climate information. This standard is mainly formulated based on the relevant contents of the "China Climate Resources Atlas" compiled by the China Meteorological Administration and published by China Cartographic Publishing House in 1994. The standard content includes the names and codes of the first-level climate zones and second-level climate regions of China's climate zoning. The names and codes of the third-level climate zones of China's climate zoning will be compiled into a national standard separately. Appendix A of this standard gives a schematic diagram of China's climate zones and climate regions. Appendix A of this standard is the appendix of the standard. This standard is proposed by the China Institute of Standardization and Information Classification and Coding. This standard is under the jurisdiction of the China Institute of Standardization and Information Classification and Coding. Drafting units of this standard: China Institute of Standardization and Information Classification and Coding, National Meteorological Center. Drafters of this standard: Li Xiaolin, Song Lianchun, Zhao Yanhua, Mao Hengqing, Wang Guofu, Lin Zhiguang. 612 1 Scope National Standard of the People's Republic of China Names and codes for climate regionalization in ChinaClimatic zones and climatic regionsGB/T17297 1998 This standard specifies the names and codes for land climate zones and climatic regions in the classification system of China's climate zones. This standard applies to the identification of climate information in the process of resource and environmental investigation and analysis, information summary and statistics, information exchange and processing, utilization of climate resources, and disaster prevention and relief by relevant departments according to climate regionalization. 2 Classification principles, methods and regionalization indicators 2.1 Classification principles and methods This standard divides the national climate regions according to the basic principles of information classification such as scientificity, integrity, systematicity and practicality based on the temperature indicators and annual dryness indicators of various regions in China, and adopts the linear classification method. The climate regionalization of this standard consists of two levels: climate zones and climate regions. 2.2 Zoning Indicators 2.2.1 Climate Zone Indicators —Climate Zones. The number of days when the 5-day sliding mean temperature stably exceeds (3)10°C is used as the main indicator for dividing climate zones. In the marginal tropics, mid-tropics and equatorial tropics, the accumulated temperature of 310°C is used as a further indicator for division. See Table 1. Table 1 Climate zone index Climate zone name Cold temperate zone Mid-temperate zone Warm temperate zone North subtropical zone Mid-subtropical zone South subtropical zone Marginal tropics Mid-tropics Equatorial tropics High source cold zone Plateau subzone Plateau subtemperate zone Plateau temperate zone Approved by the State Bureau of Technical Supervision on March 27, 1998 Number of days with 10℃ (=10 (accumulated temperature.℃)www.bzxz.net 100~170 171~217 218~238 239284 285~364 365(7 500-9 000) 365(9 000~10 000) 365(>10 000) 1~50 51~140 1998~10-01implementation 2.2.2 Climate zone indicators Second level - GB/T 17297 — 1998 Climate zones. The multi-year average annual dryness is used as the dryness and wetness index for dividing climate zones. See Table 2. Note: Dryness refers to the ratio of the maximum possible evaporation to precipitation, which is used to reflect the dryness and wetness of the climate in each region. A dryness greater than 1 indicates that the precipitation is insufficient, and a dryness less than 1 indicates that the precipitation is excessive. The so-called "maximum possible evaporation" refers to the evaporation and transpiration of soil and vegetation (based on green short grass) under the condition that the soil is often kept in a mixed state (or close to a wet state). The maximum possible evaporation is calculated using the Penman (HI.Penman) formula. In the humid, sub-humid, sub-arid, arid and extremely arid climate types, there are natural landscapes such as forests, forest steppes, grasslands, semi-deserts and deserts. Table 2 Annual dryness index of climate regions Coding structure and method Wetness of climate regions Sub-humid Sub-arid Extremely arid Annual dryness ≥1.0 <1.6 ≥1.6 3. 5 This standard uses the hierarchical coding method to encode China's climate zones. The coding structure is as follows: XXX Second level (one capital English letter) First level two Arabic numerals) The coding method is: The climate zone code is represented by the first level two Arabic numerals; the climate region code is represented by the climate zone code plus the second level one capital English letter combination. Table 4: Names and codes of climate zones and climate regions in China Cold temperate zone Names of climate zones and climate regions Cold temperate humid climate region Medium temperate zone Medium temperate humid climate region Medium temperate subhumid climate region Medium temperate subarid climate region Medium temperate arid climate region Medium temperate extremely arid climate region Warm temperate zone Warm temperate humid climate region Warm temperate subhumid climate region Warm temperate arid climate region Warm temperate extremely arid climate region GB/T 17297 -- 1998 Table (end) Names of climate zones and climate regions Northern subtropical Northern subtropical moist climate region Middle subtropical Middle subtropical humid climate region Southern subtropical Southern subtropical humid climate region Southern subtropical subhumid climate region Other subtropical Subtropical astringent moist climate region (referring to the Tawang-Zayu area)Marginal tropical Marginal tropical humid climate region Marginal tropical subhumid climate region Middle tropical Middle tropical humid climate region Red Tropical Equatorial tropical humid climate region Plateau frigid Plateau frigid arid climate region Plateau subarctic Plateau subarctic humid climate region Plateau subarctic subhumid climate region Plateau subarctic subarid climate region Plateau subtemperate Plateau subtemperate humid climate region Plateau subtemperate subhumid climate region Plateau subtemperate subarid climate region Plateau temperate Plateau temperate subhumid climate region Plateau temperate subarid climate region GB/T 17297 - 1998 Appendix A (Standard Appendix) Schematic diagram of China's climate zones and climate regions Tip: This standard content only shows part of the intercepted content of the complete standard. 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