Water Resources and Economics ( IF 2.2 ) Pub Date : 2020-07-15 , DOI: 10.1016/j.wre.2020.100163 José A. Gómez-Limón , Carlos Gutiérrez-Martín , Nazaret M. Montilla-López
Allocation trade is an instrument that has been widely used to recover water for the environment during periods of scarcity (droughts). This paper proposes a water bank operating within a monopsony-monopoly setting with the dual purpose of reallocating water among farmers and acquiring water for the environment during drought periods. The proposed water bank would be managed by a public agency seeking to maximize economic efficiency generated in purchases and sales of water for agriculture and the efficiency generated by the recovery of water allocations for the environment. An additional, innovative feature of the analysis performed is that it considers the inefficiencies in the economy as a whole caused by public spending on water allocation purchases, measured through the marginal cost of public funds. The potential performance of the proposed water bank is simulated by mathematical programming techniques, taking the Guadalquivir River Basin (Southern Spain) as an empirical case study. The results provide evidence that, in terms of economic efficiency, the proposed institutional arrangement outperforms the instruments currently in place to purchase water allocations.
中文翻译:
在垄断的环境下通过公共水库为干旱期间的环境取水
分配贸易是一种在稀缺(干旱)时期为环境取水的工具。本文提出了一种在垄断垄断环境下运作的水银行,其双重目的是在干旱期间向农民重新分配水和为环境获取水。拟议中的水库将由一个公共机构管理,该机构寻求最大程度地提高农业用水的购销中产生的经济效率以及恢复对环境的用水分配所产生的效率。所进行的分析的另一个创新特征是,它考虑了通过公共用水的边际成本衡量的,公共用水购买配水所造成的整体经济效率低下。拟建水库的潜在性能通过数学编程技术进行了模拟,以瓜达尔基维尔河流域(西班牙南部)为例。结果提供了证据,就经济效率而言,拟议的体制安排优于目前购买水分配工具。