Conservation Payments, Liquidity Constraints, and Off-Farm Labor: Impact of the Grain-for-Green Program on Rural Households in China
Emi Uchida,  Scott Rozelle,  and Jintao Xu
American J. of Agricultural Economics Volume 91, Issue 1 Pp. 70-86.
http://ajae.oxfordjournals.org/content/91/1/70.abstract