Impact of rubber plantation on
soil macrofauna biodiversity
Brauman Alain Lafaye Marin, Perawatchara Monrawee Gay Frederic...
Objective of this study
Define the impact on soil biodiversity of rubber tree
plantation
Annual rainfall 1200 mm
Dry season 5-6 months

Impact of rubber
plantation on
soil biodiversity

Annual rainfall 1500 mm
D...
Questions of the study
What is the temporal dynamic of
macrofauna communities

Cas.

1-3

4-6

6-10

23-25

What are the m...
Group I

Cassava field

Experimental design
1-3
Group II

Group III

cassava

• Chonosequence of rubber plantations : Chac...
Rubber and Agroforestry
Experimental strategy
Soil physical characteristics

Soil fauna Biodiversity

TSBF methodology

Soil microbial characteris...
Eveness index
this index will take
- high values when
all the communities
are close in
number
- low value when
there is a ...
Population
structure

B0= 29
g/m²

B1=23 g/m²

D1= 417 ind./m²

D0= 674
ind./m²

B2= 47 g/m²
D2= 183 ind./m²
4-6 y

1-3 y
...
Eartworms casts in old plantation
What are the drivers of this biodiversity ?
Full RDA analysis

R. 5-6
R. 1-3

Cass
R. 23-25

R. 6-10
Same analysis without the age of the
plantation (partial RDA)

R. 5-6

R. 6-10

Block effect
Cass
R. 23-25

R. 1-3
Conclusion
Positive impact of Rubber plantation on soil macrofauna
density and diversity compare to cassava crop in
Chacho...
THANK FOR YOUR ATTENTION
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The Impact of Rubber Trees Plantations on Soil Functional Biodiversity and Soil Organic Carbon

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This presentation on the impact of rubber tree plantations on soil functional biodiversity and soil organic carbon was given on February 2013 at the World Agroforestry Congress 2014 in New Delhi by Alain Daniel Brauman.

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The Impact of Rubber Trees Plantations on Soil Functional Biodiversity and Soil Organic Carbon

  1. 1. Impact of rubber plantation on soil macrofauna biodiversity Brauman Alain Lafaye Marin, Perawatchara Monrawee Gay Frederic, Chayawat Chompunut, Robain Henri, Choosai Chutinan, Junrungreang Supaporn, Chantuma Pissamai, Trap Jean, Nopmanee Suvannang
  2. 2. Objective of this study Define the impact on soil biodiversity of rubber tree plantation
  3. 3. Annual rainfall 1200 mm Dry season 5-6 months Impact of rubber plantation on soil biodiversity Annual rainfall 1500 mm Dry season 4 months Chachoengsao Project funded by French Institute for Natural Rubber (IFC) and the companies SIPH, SOCFIN and MICHELIN Annual rainfall 2000mm Dry season 1month
  4. 4. Questions of the study What is the temporal dynamic of macrofauna communities Cas. 1-3 4-6 6-10 23-25 What are the main drivers of soil macrofauna biodiversity patterns Soil type Age
  5. 5. Group I Cassava field Experimental design 1-3 Group II Group III cassava • Chonosequence of rubber plantations : Chachoengsao  4 groups of ages  Cassava fields as previous cropping • The measurements have been realized in 3 different 4-6 zones, each containing one repetition of the age class and one control field 8-12 Group IV 20-25
  6. 6. Rubber and Agroforestry
  7. 7. Experimental strategy Soil physical characteristics Soil fauna Biodiversity TSBF methodology Soil microbial characteristics C sequestration and OM 20.0 16.0 12.0 8.0 4.0 0.0 Soil C content (g.kg-1) Cassava RP 1-3 years RP 4-6 RP 8-12 RP 23-25 years years years
  8. 8. Eveness index this index will take - high values when all the communities are close in number - low value when there is a specie that dominate the others in number. Cas. 1-3 4-6 6-10 23-25
  9. 9. Population structure B0= 29 g/m² B1=23 g/m² D1= 417 ind./m² D0= 674 ind./m² B2= 47 g/m² D2= 183 ind./m² 4-6 y 1-3 y Cassava B3= 67 g/m² D3= 590 ind./m² 6-10 y B4= 78 g/m² D4= 531 ind./m² 23- 25 y
  10. 10. Eartworms casts in old plantation
  11. 11. What are the drivers of this biodiversity ? Full RDA analysis R. 5-6 R. 1-3 Cass R. 23-25 R. 6-10
  12. 12. Same analysis without the age of the plantation (partial RDA) R. 5-6 R. 6-10 Block effect Cass R. 23-25 R. 1-3
  13. 13. Conclusion Positive impact of Rubber plantation on soil macrofauna density and diversity compare to cassava crop in Chachoengsao province Strong difference between young and mature stage for all soil macrofauna descriptors (density, structure and diversity)- Intercropping Plantation age rather than soil typology seems the main driver of soil macrofauna diversity pattern in rubber plantation
  14. 14. THANK FOR YOUR ATTENTION

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