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.

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.℃)
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
1998~10-01implementationbzxz.net
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
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