This study describes the development of bio economic models examining the economic and water quality impact of various proposed policy options in the Upper Waikato catchment. In the first phase nitrogen emissions are determined for representative farming systems using the Overseer nutrient...

To value water quality improvements in the Chesapeake Bay or elsewhere, it is necessary to choose an appropriate model of consumer behavior. A number of different travel cost based recreation demand models have beenemployed to value changes in water quality or beach access. Among the possible...

Commercial rice imports have accounted for approximately 61%, food aid in rice accounted for about 2%, and domestic rice accounted for some 37% per annum of rice consumption in Ghana over the four years between 2000 and 2003. Compared to the 1990s, these figures show a gradual decline in the...

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Chapter1 An Analysis of the Factors affecting New-Generation Peasant Workers’ Decision-making of Vocational Training Participation —A Micro Perspective -- Chapter2 A Theoretical and Empirical Study on over-leaping the Middle Income Trap -- Chapter3 Middle Income Trap and the Innovation of...

Of water withdrawn for agricultural crop irrigation, a portion is consumed and the remainder comes back to the hydrologic system as return flows. Previous models of irrigation water demand have mostly focused on the change in withdrawals in response to price changes, even though knowledge of the...

Stated preference approaches are widely used in non-market valuation. However, their potential uses extend far beyond valuation. In particular they can be used to assess efficiency of resource allocations and to design optimal resource allocations. Changes to the government budget were evaluated...

This paper is based on an ongoing joint work with David Sahn and Xiaobo Zhang.