地下水灌溉对小农生计的影响——以石羊河流域民勤县为例

Effects of Groundwater Irrigation on Livelihood of Small Farmers——A Case Study of Minqin County in Shiyang River Basin

从地下水灌溉的经济可行性、农户贫困发生率和地下水开采量与农牧业产量之间的关系,考察地下水灌溉对石羊河流域民勤县小农生计的影响,得出以下主要结论:①经计算,水井建造成本低于井灌农户的收入,净现值大于零,说明农户可通过地下水灌溉获得利润。②地下水开采量减少导致当地贫困发生率上升,但在2014年实施精准扶贫后,民勤县贫困发生率低于全国水平。③民勤县地下水开采量与农牧业产量之间为负相关,因此地下水开采量减少并没有导致农牧业产量减少。

From the economic feasibility of groundwater irrigation,the incidence of poverty and groundwater resources and the relationship between the farming and animal husbandry production,this paper studied the effect of groundwater irrigation in Minqin County′s small peasant livelihood.The conclusions were:①According to the calculation,the construction cost of wells was lower than the income of well irrigation farmers,and the net present value was greater than zero,indicating that farmers using groundwater irrigation could obtain profits.②The decrease of groundwater exploitation led to the increase of poverty rate,but after the implementation of targeted poverty alleviation in 2014,the poverty rate in Minqin County was lower than the national poverty rate.③Minqin County had a negative correlation between the amount of groundwater exploitation and the output of agriculture and animal husbandry,so the decrease of groundwater exploitation did not lead to the reduction of the output of agriculture and animal husbandry.