为研究有效激励地下水超采区农户主动参与地下水压采的生态补偿激励机制,解决近年来农户在参与地下水压采措施施行过程中消极和地下水压采效果不显著等问题,把调节径流、涵养水源功能价值模型改进并建立地下水压采生态补偿激励模型,并将该模型应用到地下水压采生态补偿激励标准核算中,再结合以成本分析法计算出的生态补偿基础标准得出新的生态补偿标准.以成安县为例,引入干旱指数概念和地下水开采系数改进调节径流、涵养水源功能价值模型,干旱指数客观反映了研究区域降水、气候等因素,地下水开采系数则反映了各乡镇超采程度的差异,改进模型计算确定出了试点年成安县各试点村补偿金在416~634元/亩间浮动.激励机制的加入使得地下水压采区生态补偿标准更具针对性和合理性,为实现地下水压采工作的可持续推进提供了参考.
In order to study the incentive mechanism for ecological compensation for effectively en-couraging farmers to take the initiative to participate in restricting groundwater extraction and solve the problems by farmers'negative participation in the implementation of restriction on groundwater extraction measures and the insignificant effect of agricultural measures on restric-ting groundwater extraction in recent years.An ecological compensation incentive model for re-striction on groundwater extraction is established by improving the functional value models of runoff regulation and water conservation,the model is applied to the accounting of ecological compensation incentive standard for restricting groundwater extraction,and a new ecological compensation standard is obtained by combining with the ecological compensation basic standard calculated by the cost analysis method.Taking Cheng'an County as an example,the concept of drought index and the groundwater exploitation coefficient are introduced to improve the func-tional value model for regulating runoff and water conservation.The drought index objectively reflects the precipitation and climate in the study area,while the groundwater exploitation coeffi-cient reflects the difference of over extraction on underground water in each township.The im-proved model calculates and determines the compensation of each pilot village in Cheng'an County fluctuating between 416 yuan and 634 yuan per mu in the pilot year.The addition of incentive mechanism makes the ecological compensation standard of areas restricted by groundwater extrac-tion more targeted and reasonable,providing a reference for realizing the sustainable advancement of underground water pressure mining work.