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Mintewab Biodiversity And Productivity1

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Mintewab Bezabih, Salvatore Di Falco & Mahmud Yesuf
Background ,[object Object],[object Object],[object Object]
Ecological and experimental agricultural studies ,[object Object],[object Object],[object Object],[object Object],[object Object]
Previous economic studies ,[object Object],[object Object],[object Object],[object Object]
Gaps ,[object Object],[object Object],[object Object]
Contribution ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Data ,[object Object],[object Object],[object Object],[object Object]
Estimation method ,[object Object],[object Object],[object Object],[object Object]
Estimation method (contd.)
Estimation method (contd.) ,[object Object],[object Object],[object Object],[object Object],[object Object]
Determinants of productivity
Determinants of diversity (poisson estmation
[object Object]
3SLS estmation: Determinants of productivity Variables Coeffs Std errors P value Fertility -113.4782 90.06769 0.208 Flat slope -29.00117 98.00596 0.767 Labour 42.59281 69.36276 0.539 Labour ^2 9.801794 4.131985 0.018 Land 616.3177 73.68763 0.000 Land^2 -41.1687 4.401167 0.000 Oxen 47.67628 17.43194 0.006 Oxen^2 -.0621838 .0224521 0.006 Fertilizer .7430171 .1993151 0.000 Fertilizer^2 -.0000508 .0000156 0.001 Manure .0037627 .0205699 0.855 Rainfall 3.433479 1.650406 0.037 Improved seeds .3050942 .2880149 0.289 Crop Biodiversity 1175.067 472.5374 0.013 Biodiversity*Rainfall -.9440316 .3937311 0.017 Constant -3737.004 1923.756 0.052
3SLS estmation: determinants of diversity Variables Coeffs Std errors P value Fertility -.0266876 .1016266 0.793 Flat slope -.0840308 .1100031 0.445 Labour -.0437355 .0525935 0.406 Landsize .243942 .0543871 0.000 Oxen .0025103 .0016516 0.129 Fertilizer -6.46e-06 .0000789 0.935 Manure .0000786 .0000226 0.001 Rainfall .0018248 .0002119 0.000 Improved seeds -.0003128 .000324 0.334 Lagged rainfall -.0006388 .0002104 0.002 Gender -.4186447 .1079681 0.000 Training -.2318708 .1042899 0.026 Tenure security -.1000302 .0378401 0.008 Constant 2.399388 .3703267 0.000
Conclusions ,[object Object],[object Object],[object Object]
Conclusions (contd.) ,[object Object],[object Object]

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Mintewab Biodiversity And Productivity1

  • 1. Mintewab Bezabih, Salvatore Di Falco & Mahmud Yesuf
  • 2.
  • 3.
  • 4.
  • 5.
  • 6.
  • 7.
  • 8.
  • 10.
  • 12. Determinants of diversity (poisson estmation
  • 13.
  • 14. 3SLS estmation: Determinants of productivity Variables Coeffs Std errors P value Fertility -113.4782 90.06769 0.208 Flat slope -29.00117 98.00596 0.767 Labour 42.59281 69.36276 0.539 Labour ^2 9.801794 4.131985 0.018 Land 616.3177 73.68763 0.000 Land^2 -41.1687 4.401167 0.000 Oxen 47.67628 17.43194 0.006 Oxen^2 -.0621838 .0224521 0.006 Fertilizer .7430171 .1993151 0.000 Fertilizer^2 -.0000508 .0000156 0.001 Manure .0037627 .0205699 0.855 Rainfall 3.433479 1.650406 0.037 Improved seeds .3050942 .2880149 0.289 Crop Biodiversity 1175.067 472.5374 0.013 Biodiversity*Rainfall -.9440316 .3937311 0.017 Constant -3737.004 1923.756 0.052
  • 15. 3SLS estmation: determinants of diversity Variables Coeffs Std errors P value Fertility -.0266876 .1016266 0.793 Flat slope -.0840308 .1100031 0.445 Labour -.0437355 .0525935 0.406 Landsize .243942 .0543871 0.000 Oxen .0025103 .0016516 0.129 Fertilizer -6.46e-06 .0000789 0.935 Manure .0000786 .0000226 0.001 Rainfall .0018248 .0002119 0.000 Improved seeds -.0003128 .000324 0.334 Lagged rainfall -.0006388 .0002104 0.002 Gender -.4186447 .1079681 0.000 Training -.2318708 .1042899 0.026 Tenure security -.1000302 .0378401 0.008 Constant 2.399388 .3703267 0.000
  • 16.
  • 17.