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1. 1. 3. 8. 7. 2. 7. 3. 5. 11. 10. 5. 2. 9. 6. 10. 4. 4. 12. C. G1. F2. Time t. NFO. F1. A. B. G2. Die. Out-migrate. NFO (new). Time t + t. F2. NFO (expanded). B. A. G2. In-migrate. New birth. Fig. 1. Conceptual framework. Person i. Check CVFS data.
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1 1 3 8 7 2 7 3 5 11 10 5 2 9 6 10 4 4 12 C G1 F2 Time t NFO F1 A B G2 Die Out-migrate NFO(new) Time t + t F2 NFO(expanded) B A G2 In-migrate New birth Fig. 1. Conceptual framework
Person i Check CVFS data Check GIS land use & vegetation maps No Special conflict or crisis? Yes Calculate: prop of Forest and grass (xe) dist to nearest forest (xf) dist to nearest NFO (xNFO) Check Time for fuelwood collection (xfd) Rice productivity (xag) Value of xo Calculate p2 = f (conflict, crisis) i = i +1 (move to next person) Generate random number RN p = p1or p2 Calculate p1 = b0+b1xe+b2xf+ b3xNFO+b4xfd+b5xag+b6xo Yes No RN < P? Outmigrate Remain Fig. 2. Determine the outmigration probability
Household i (i = 1, …, n) Start Stop Check self-reported site(s) Collect and return Yes Expand checking area Closest to Home location? No Have other potential sites? No Yes Have fuelwood? No Fig. 3. Choosing fuelwood collection site
Low-moderate Flooding + + Environmental degradation Perceived env. degradation + + + Outmigration Infertility - - - Population size % of vegetated land Fig. 4. Multiple relationships related to flooding