1Gertler Paul J, Martinez Sebastian, Premand Patrick, et al. Impact Evaluation in Practice [EB/OL] .(2011).https: //openknowledge.worldbank.org/handle/10986/2550.
3Linda G Morra Imas,Linda G,et al,The road to results: designing and conducting effective development evaluations [EB/OL] . (2009) .http://www.worldbank.org/r2r.
4White H.Theory-based impact evaluation: principles and practice [J] .Journal of Development Effectiveness,2009,1(3): 271-284.
1Braun, J V, H Bouis, S Kumar and R Pandya- lorch. Improving Food Security of the Poor[ R]. Washington D C: International Food Policy Research Institute. 1996.
2Cooper, J. C., and T. Osborn, "The Effect of Rental Rates on the Extension of Conservation Reserve Program Contracts", American Journal of Agricultural Economics, 1998, 80, 184-194.
3Huang, J., "Land Degradation in China: Erosion and Salinity Component", CCAP Working Paper,WP-00-E17, Center for Chinese Agricultural Policy, Beijing, China, 2000.
4Johnson, P. N., S. K. Misra, and R. T. Ervin, "A Qualitative Choice Analysis of Factors Influencing PostCRP Land Use Decisions", Journal of Agricultural and Applied Economics, 1997, 29 (1),163-173.
5Just, R., and J. Antle, "Interactions between Agricultural and Environmental Policies: Aconceptual Framework", American Economic Review, 1990, 80, 197-202.
6Liu, Shuren, "Description of Cropland Conversion Program", in Xu Jintao and Ulrich Sehmitt (Eels.),Workshopon Payment Schemes for Environmental Services: Proceedings, CCICED, Task Force on Forests and Grassland. Beijing: Beijing Forestry Publishing House, 2002.
7Uchida, Emi, Jintao Xu and Scott Rozelle,"'Grain for Green' Policy in China: Cost-effectiveness and Sustainability of a Conservation Set-aside Program", Paper presented at AAEA 2003 Annual Conference, 2003.
8Wooldridge, J. M, Econometric Analysis of Cross Section and Panel Data. Cambridge, MA: MIT Press, 2002.
9World Bank, "China: Air, Land and Water, Environmental Priorities for a New Millennium", World Bank, Washington, DC, 2001.
10World Wildlife Fund, Report Suggests China's "Grain-to-Green" Plan is Fundamental to Managing Water and Soil Erosion, 2003.
