GB/T 17296-2009Classification and codes for Chinese soil (English PDF)

Foreword

This standard replaces GB/T 17296-2000 "China Soil Classification and Code". Compared with GB/T 17296-2000, the main amendments are as follows:

--- Newly added 2 sub-categories, 64 soil genus, 130 soil species, and coded;

--- Adjusted the soil of two soil types, the sub-categories of 12 soil types, and the soil belonging to 18 soil types, and changed the code;

--- Revised the soil names of 4 soils and 98 soil types;

--- Removed 7 soils and 2 soils. Details of the above changes can be found in informative Appendix A. Appendix A and Appendix B of this standard are informative annexes. This standard was proposed by the China National Institute of Standardization. This standard is under the jurisdiction of the National Information Classification and Coding Standardization Technical Committee. This standard was drafted. Institute of Agricultural Resources and Agricultural Regional Planning of the Chinese Academy of Agricultural Sciences, National Agricultural Technology Extension Service Center, China Standardization Institute. The main drafters of this standard. Tian Youguo, Yao Yanmin, Li Xiaolin, Huang Hongxiang, Zhang Shiyan, Yao Zufang, Zhang Jianlian, Xu Aiguo, Jiang Zhou. This standard was first published in.1998 and first revised in.2000. This is the second revision.

This standard is one of the important basic standards of the national information system. It is based on the research results of the second national soil survey. This standard is based on practical applications and is dedicated to facilitating the development and utilization of soil resource information and specifications by users in the fields of agriculture and the environment. The practical application of soil data and provide a solid foundation for the sharing and exchange of soil resource information. The deadline for this standard is September.2008. In this application, users can intercept and use according to different needs, or The extension is based on the coding structure of this standard. GB/T 17296-2009 Chinese soil classification and code

1 Scope

GB/T 17296-2009 is the Chinese national standard on classification and codes for chinese soil, in the field of information technology. The /T suffix marks it as a recommended standard: it is not compulsory by itself, but it becomes binding as soon as a contract, a tender or a customer specification calls it up - which in practice is how most foreign buyers meet it. It was issued on 6 May 2009 by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China; Standardization Administration of China, and has been in force since 1 November 2009. Classification: ICS 35.040, CCS A24. This page is published from the official record of the standard held by the Chinese standards administration: the identification, the dates, the classification and the issuing body are taken from there. The clause text, the tables and the numeric limits are in the document itself, which is delivered complete in English translation.

This standard specifies the soil names and codes of soils, subclasses, soils, subtypes, soils and soils in the Chinese soil classification system. This standard applies to soil surveys, soil statistics information collection, soil information exchange and treatment, and the use of soil resources. Identification of soil information.

2 Classification principles and methods

This standard is based on the basic principles of scientific, complete, systematic, practical, scalable and compatible information classification, using line classification The classification method of the soil classification system is divided into six levels. soil, subclass, soil, subclass, soil, and soil.

3 Code structure and coding method

3.1 Code Structure This standard uses the hierarchical coding method to encode the soil at each level in the Chinese soil classification system. The code structure is shown in Figure 1. The first layer (a capital letter Second layer (an Arabic number The third floor (an Arabic number The fourth layer (an Arabic number Fifth floor (two Arabic numerals The sixth floor (two Arabic numerals ) Figure