Chinese soil data set based on world soil database (hwsd) (v1.1)

English name

CSTR

11738.11.ncdc.Westdc.2020.585

Share type

Online

Category

Basic Geography

Datasets description

The data comes from the harmonized world soil database version 1.1 (hwsd) built by FAO and IIASA. The data source in China is 1:1 million soil data provided by Nanjing Soil Institute of the second national land survey. The data can provide input parameters for modelers, and the agricultural perspective can be used to study ecological agriculture zoning, food security and climate change. Data format: grid grid format, projection as WGS84. The main soil classification system is fao-90.

The main fields of soil attribute table include:

Su Yu sym90 (soil name in FAO 90 soil classification system)

Su Yu sym85 (fao85 classification)

T_texture (top soil texture)

DRAINAGE(19.5);

Ref? Depth (reference depth of soil)

AWC_CLASS(19.5);

Awc_class (soil available water content)

Phase1: real (soil phase)

Phase2: string (soil phase)

Roads: string (depth classification of obstacles to the bottom of soil)

SWR: string (soil moisture content characteristics)

Add_prop: real (specific soil types in the soil unit related to agricultural use)

T_gravel: real (volume percentage of crushed stone)

T_sand: real (sand content)

T_silt: real (silt content)

T_clay: real (clay content)

T? USDA? Tex: real (USDA soil texture classification)

T? Ref? Bulk: real

T_oc: real (organic carbon content)

T? PH? H2O: real

T ﹣ CEC ﹣ clay: real

T? CEC? Soil: real

T_bs: real (basic saturation)

T_teb: real (exchangeable base)

T_caco3: real (carbonate or lime content)

T_caso4: real (sulfate content)

T_esp: real (exchangeable sodium salt)

T_ece: real.

The attribute field beginning with t_represents the upper soil attribute (0-30cm), and the attribute field beginning with s_represents the lower soil attribute (30-100cm).

Please refer to the description document < EM >. PDF and database < / EM >. MDB under the folder for the meaning of specific attribute values.

Base information

collect time	2009/01/01 - 2009/12/31
collect place
data size	16.1 MB
data format
Coordinate system	WGS84
Projection

Data source description

The data comes from the world soil database version 1.1 (hwsd) constructed by FAO and IIASA. The data source in China is 1:1 million soil data provided by Nanjing Soil Institute of the second national land survey.

Data processing method

The main soil classification system used is fao-90

Data quality description

Data set quality control through strict manual audit

Reference method

In order to protect the rights and interests of the platform's scientific and technological resources, expand the service of the platform center, and enhance the application potential of the scientific and technological resources, resource users are requested to clearly indicate the resource sources and resource authors in the research results (including published papers, works, data products and unpublished research reports, data products and other results) produced by using the resources.

In order to respect intellectual property rights, protect the rights and interests of data authors, expand the services of data centers, and evaluate the application potential of data, data users are requested to clearly indicate the data source and data authors in the research results (including published papers, works, data products and unpublished research reports, data products, etc.) produced by using data. For data reprinted (secondary or multiple releases), the author must also indicate the source of the original data.

For the achievements published in English, please refer to the following specifications： The dataset is provided by National Cryosphere Desert Data Center. (http://www.ncdc.ac.cn).

Data reference

Lu linLiu chao.Chinese soil data set based on world soil database (hwsd) (v1.1). National glacial and frozen desert scientific data center(http://www.ncdc.ac.cn/), 2019.

license agreement

This work is licensed under a Creative Commons Attribution 4.0 International License.

#	Dataset title

#	title	file size
1	基于世界土壤数据库（HWSD）的中国土壤数据集(v1.1).rar	16.1 MB

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Theme:
Crushed stone volume HWSD soil texture Soil soil moisture content organic carbon content
Subject:
physical geography
Time:
2009 2009
Place:
China

east 135.50

west 73.20

south 17.80

north 53.87

Service information

contacts:: National glacier, permafrost and desert scientific data center
phone:: 0931-4967592
mailbox:: ncdc@lzb.ac.cn

Contact information

contributors:: Lu lin , Liu chao
author:: Wu lizong
manager:: Min Yu Fang , Lu lin