Optimal Groundwater Irrigation Allocation of Al-Wajid Aquifer in the Kingdom of Saudi Arabia  

作　　者：S. H. Al-Kahtani 

机构地区：[1]Department of Agricultural Economics, College of Food and Agricultural Sciences, King Saud University, Riyadh 11451, SaudiArabia

出　　处：《Journal of Agricultural Science and Technology(B)》2011年第5期735-745,共11页农业科学与技术（B）

摘　　要：Groundwater is the primary water source in the Kingdom of Saudi Arabia. As result of lack of basic knowledge on irrigation practices, massive abstractions of groundwater occurred in 1980＇s. A Decision Support Linear Goal Programming （LGP） model was developed to determine optimal groundwater irrigation levels, to assess the implications for water management policies, and to estimate welfare impact on producer surplus. Due to the reductions of groundwater in 1980＇s, the Al-Wajid aquifer water levels have dropped in agricultural areas by more than 200 m. Results from this study estimate that the total groundwater of the Al-Wajid aquifer that can be saved is equal to 66 MCM for the first scenario, 147 MCM for the second scenario, and 229 MCM for the third scenario. Regarding the welfare analysis impacts, it is clear that the total gross margin is decreasing up to 7.7% at the end of the year of scenario Ⅲ. Therefore, the third scenario with a water saving increase to 18.1% is recommended as a directive for agricultural policy formation in the future.

关 键 词：Agricultural policy groundwater Al-Wajid aquifer ABSTRACTION IRRIGATION welfare analysis 

分 类 号：S273.4[农业科学—农业水土工程] S275[农业科学—农业工程]