1. PROJECT TITLE STUDY OF THE IMPACT OF
LANDUSE/ LANDCOVER CHANGE ON SOIL-VEGETATION-ATMOSPHERE INTERACTIONS INTSIFUL J.D. , GHANA ANYAH R.O. , KENYA MWADOTO S., KENYA
PHAN VAN TAN, VIETNAM

2. OBJECTIVE
TO INVESTIGATE AND CHARACTER ISE THE SOIL-VEGETATION-ATMOSPHERE INTERACTIONS IN CABAUW
TO ASSESS SENSITIVITY OF CLIMATE PARAMETERS TO LANDUSE /LANDCOVER CHANGE

3. HYPOTHESIS
DIFFERENT LANDCOVER/LANDUSE TYPES HAVE DIFFERENT WATER DEMAND, ALBEDO,SENSITIVITY TO RADIATION, STOMATAL RESISTANCE AND RESPOND DIFFERENTLY TO CLIMATE CHANGES. THEREFORE BY CHANGING THE LANDUSE /LANDCOVER ONE CAN SIMULATE REALISTICALLY THE INTERACTION BETWEEN THE LAND,VEGETATION AND THE ATMOSPHERE WITH RESPECT TO CHANGES IN CLIMATE VARAIABILITY.

4. Land Use/Land Cover Types
Short Grass
Tall Grass
Evergreen
Desert/Bare Soil - Control

5. OUTLINE
Run simulation by changing landuse/land cover types- tall grass,short grass,desert and evergreen
Generate simulation results for
Heat Fluxes: Latent heat, sensible heat, Sensible heat, Net Solar and Infra Red absorbed
Water Fluxes:Soil Water content, Precipitation and moisture fluxes

6. OUTLINE
Plot output of the above simulations of the landuse/land cover types of interest over selected periods
Analysis of results
Conclusion

7. Latent Heat Fluxes

8. Latent Heat Fluxes (Jan.-Jul.)

9. Latent Heat Fluxes (Jul.-Nov)

10. Latent Heat Fluxes (Summer)

11. Latent Heat Fluxes (Summer)

12. Sensible Heat fluxes(July)

13. Sensible Heat fluxes(21 Days,Jan.)

14. Annual Total Soil Water Content

15. Annual Top Soil Temperature

16. Temperature of Foliage(July)

17. Annual Deep Soil Temperature

18. Analysis of Results Latent Heat Fluxes
Evergreen produces the highest latent heat with winter and summer peaks 270 and W/m**2 respectively.
Tall grass shows slightly higher values that bare soil and short grass
Short grass and bare soil has the same effect

19. Analysis of results Sensible heat fluxes
Evergreen produces more sensible heat fluxes with peak of 800W/m**2 in summer and -300W/m**2 in winter
Tall grass has the same effect as short grass and bare soil with peak values of 450 and 400 W/m**2 respectively
Short grass and Bare soil have the same values

20. Analysis of results Soil water content
In winter(Jan-March) all four vegetation types show the same effect (4000).
In summer(March) evergreen (3050)show the lowest soil water content followed by tall grass(4125),short grass(4225) and then bare soil(4275).
Tall grass,short grass and bare soil tend to increase soil water content where as evergreen tend to deplete soil water content

21. Analysis of results Top soil temperature
All four vegetation types have the same effect
Trend follows the seasons rising from winter and peaking in summer and the fall back in winter
Very little effect in winter

22. Analysis of results Foliage Temperature
Lowest for evergreen, followed by tall grass,short grass and bare soil
Bare soil and short grass have the same effects

23. Analysis of results Annual Deep Soil Temperature
Same effect in all four vegetation types
Trend follows the season with peak at summer and lowest in winter
Effect of vegetation on deep soil temperature is minimal

24. Conclusion
Landcover/Landuse change has appreciatiable impact on land-atmosphere interactions
Landcover/Landuse change alter energy fluxeson the land-atmosphere interface
Landcover/landuse change alter soil water fluxes
Vegetation with broader leaves and rooting systems have greater impact

25. THE END
Thank You