Water-saving Technologies,Solar Green House and Ecological Rehabilitation in Minqin Oasis of Gansu Province,China

作     者：Tao Weichun Shi Minjun Zhao Xuetao 

作者机构：Graduate University of Chinese Academy of Sciences CAS Beijing 100049 China Research Center on Fictitious Economy and Data Science CAS Beijing 100080 China 

出 版 物：《Chinese Journal of Population,Resources and Environment》 (中国人口·资源与环境（英文版）)

年 卷 期：2008年第6卷第3期

页      面：73-82页

学科分类：0303[法学-社会学] 1007[医学-药学(可授医学、理学学位)] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 082803[工学-农业生物环境与能源工程] 1004[医学-公共卫生与预防医学(可授医学、理学学位)] 1001[医学-基础医学(可授医学、理学学位)] 08[工学] 0828[工学-农业工程] 0815[工学-水利工程] 0706[理学-大气科学] 

基　　金：the Grant for Outstanding Hundred Scholars of Chinese Academy of Sciences. 

主　　题：节水技术 日光大棚 生态修复 环境保护 

摘      要：Land degradation and desertification have becom severe environmental problems in arid areas due to excessive use of water resources. It is urgent to reduce agricultural water use fo ecological rehabilitation, which may result in a decrease in agri cultural production and farmer s welfare. This paper focused on the impacts of some main measures including extensions of water saving irrigation, expanding solar green house and increasing off farm employment, which are generally recognized to be importan to alleviate water shortage and poverty. A bio-economic model i applied taking Minqin Oasis in Gansu Province as a case study site. Simulation results showed that the effect of expanding sola greenhouse was more positive than other ones so it drew more attention. On the view of the different effects between each irriga tion zone, mixed policy patterns suitable for them are suggested In Baqu, expanding solar greenhouse should be the most impor tant, auxiliary with encouraging pipe irrigation. Inversely, with regard to Quanshan, the major attention should be paid to subsidy for pipe irrigation and it would be better to supply the off-farm employment opportunities to the households in Huqu, where the expanding of solar greenhouse should also be summoned. Finally it should be noted that farmer s income would only resume to 90% of the current level in the short run by putting more effort into lo cal policies. Thus, the ecological compensation is needed to ensure farmer s welfare.