SL 190-2007 in English

SUPERSEDED

Standards for classification and gradation of soil erosion

Issued on:2008-01-04
Implemented on:2008-04-04
File Format:PDF
Delivery:Via email within 1~3 business days

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Standard No:	SL 190-2007
Document status:	SUPERSEDED
Superseded by:	SL 190-2008 Soil Erosion Classification and Grading Standard
Superseded on:	2008-04-04
Title in English:	Standards for classification and gradation of soil erosion
Title in Chinese:	土壤侵蚀分类分级标准
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2008-01-04
Implemented on:	2008-04-04
Superseding:	SL 190-1996 Standards for classification and gradation of soil erosion
ICS Classification:	13.080-Soil quality. Pedology
Chinese Classification:	P57-Irrigation drainage and soil and water conservation engineering
Professional Classification:	SL-Water Resources
Related Keywords:	soil erosion area soil erosion soil erosion intensity graduation frozen soil erosion area soil erosion type areas
Related Topics:	Soil Erosion iec standard classification iec standard classification Soil standard curve iec standard classification iec standard classification the soil erosion Soil standard curve soil meter type Grain size standard classification Soil Quality Standard Class II Titanium Standard Curve in Soil Soil cadmium standard curve type of soil Soil Erosion Soil Water Classification soil microbial invasion Soil standard sieve Erosion and Erosion Classification of Soil Water Erosion Erosion erosion and erosion Guidelines for Soil Standards Classification of soil standard classification iec standard classification iec Soil primary and secondary monitoring type of soil Soil Water Classification Soil Standard 2 Classification of Soil Erosion SL 190-2007 National Soil Classification National soil nutrient content classification standard table Five categories of water quality classification standards The latest national soil treatment standards soil nutrient classification Soil nutrient level classification National soil grade two soil conductivity classification Soil type three Soil ammonia nitrogen standard curve soil grade two Soil lead standard curve Soil nutrient content classification Soil classification standards and classification status Soil type classification standards and numbers Classification of total sulfur in soil National soil nutrient content classification Soil Gas Standard Document Soil structure classification Class II Soil Class II Soil fluoride exceeds standard Soil compactness grade classification Metro standard values for soil category I Chinese standard soil color card Soil available aluminum classification National classification of soil nutrient content soil standard aluminum The significance of soil nutrient classification standards Soil heavy metal standard classification Soil nutrient level classification soil nutrient standard level Soil salinity standard value Soils are classified using standard Soil nutrient composition standard table What are the standards for soil types? Soil EC standard range Soil exchangeable aluminum classification Classification and grading of soil available aluminum Commonly used classifications of soil conductivity Soil nutrient content grading standard table Soil particle size classification Soil conductivity classification standard table

1 General Provisions

1.0.1 This standard is formulated in order to unify water and soil loss investigations and develop water and soil conservation work.
1.0.2 This standard is applicable to classification and graduation of soil erosion all over the country.
1.0.3 Main normative references of this standard:
"Terminology of Soil and Water Conservation"(GB/T 20465-2006).
1.0.4 The classification and graduation of soil erosion shall not only execute this standard but also those in the current relevant current nations.

2 Terminology

2.0.1 The relevant soil erosion terminology defined in GB/T 20465-2006 are applicable to this standard.
2.0.2 The potential hazard degree of soil erosion
It refers to the hazard degree of soil erosion occurring after unbalance of the ecological system. It is used to evaluate and predict the degree where the erosion is caused in no obvious erosion area and the erosion is aggravated in the erosion area and express the erosion age limit (erosion resistance age limit) borne by this soil horizon at the current erosion rate in the erosion area.

3 Soil Erosion Type Division

3.1 Grade 1 Type Area

3.1.1 Three Grade 1 soil erosion type areas, namely hydraulic power, wind power and freezing and thawing all over the country.
3.1.2 Gravity erosion and mixing erosion shall not be divided into type areas independently.

3.2 Grade II Type Area

3.2.1 Water erosion type area should be divided into five Grade II type areas, namely loess plateau of Northwest China, black soil area in Northeast China, rock-soil mountainous area in North China, red soil hilly area in South China and rock-soil mountainous area in Southwest China.
3.2.2 Wind erosion type area should be divided into two Grade II type areas, namely the sandstorm area in "Three North" gobi desert and sand and the sandstorm area in coastal plain.
3.2.3 Freeze-thawing erosion type area should be divided into two Grade II type areas, namely freezing and thawing soil erosion area in North China and Qinghai-Tibet Plateau glacier frozen soil erosion area.
3.2.4 Each large river basin and each province (autonomous region, municipality directly under the central government) may be subdivided into Grade 3 type areas and subareas on the basis of Grade II zonal partition nationally.

3.3 Scope and Feature

3.3.1 The scopes and features of all-level soil erosion types all over the country are detailed in Table 3.3.1.

1 General Provisions
2 Terminology
3 Soil Erosion Type Division
3.1 GRADE 1 TYPE AREA
3.2 GRADE II TYPE AREA
3.3 SCOPE AND FEATURE
4 Soil Erosion Intensity Graduation
4.1 INTENSITY GRADUATION OF WATER EROSION AND GRAVITY EROSION
4.2 WIND EROSION AND MIXING EROSION (DEBRIS FLOW) INTENSITY GRADUATION
5 Soil Erosion Degree Graduation
Appendix A Potential Hazard Graduation Of Soil Erosion
Appendix B Determination Methods Of Water Erosion Modulus
Explanation Of Wording in This Standard

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