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| ENVT2062-1 | Soil degradation, water and wind erosion
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| Duration : | 4h FT, 4h SEM, 16h Th |
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| Credits/ECTS : |
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| Holder(s) : | Gilles Colinet, Dimitri Xanthoulis |
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| Language : | Langue française |
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| Course contents : | The course will be organized in three parts. The first part will characterise the biophysical environment in term of state and risk of soils degradation, the second, targeted on the wind erosion and the third on the hydrique erosion, will consider the adapted answers for the reduction of the phenomena or the limitation of the risks.
First part: Pressures, factors, Impacts, states
- Soil degradation: definitions and concepts; importance of the problem in the world
- Main types of soils in inter-tropicales regions according to the main international classifications (French, FAO-WRB, USDA)
- Constituents and specific physico-chemical properties of soils
- Processes and factors of soil degradation
- Assessment of the risks degradation
Second part: Wind erosion
- Principles of soil conservation
Third part: Water erosion
- The sheet and rill erosion
- Measure and modelling of the erosion processes
- The Wishmeier universal soils losses equation
- The notion of 'critical rate of erosion'
- The USLE equation (R factors, K, LS, C and P)
- Agronomic applications of the Wishmeier equation
- Contribution of the erosion to the solid flow of the river
- The processes of runoff control and conservation techniques
- Design of the runoff control devices |
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| Course objective : | The objective of the course is to give the basic principles for the quantitative assessment of water and wind erosion and to propose adapted management to the tropical and sub-tropical context.
After completing the course the student is expected to
- To put a diagnosis concerning soils degradation while arguing soil properties in relation to the pressures;
- To explain the main mechanisms implied in the different categories of soil degradation, particularly in water or wind erosion;
- To propose a methodology to quantify the soil degradation or to asses the risks of different levels of spatial scale;
- To propose options of management and improvement (practices, technologies, managements...) adapted to the tropical and sub-tropical context. |
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| Organization : | Lectures : 16h
Seminars : 4h
Field-study trip and visits : 4h |
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| Assessment : | Personal report (100%) |
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| Contacts : | Colinet, Gilles (1er Assistant)
Géopédologie
081 62 25 39
colinet.g@fsagx.ac.be |
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