Agricultural water trade under farmland fragmentation: A simulation analysis of an irrigation district in northwestern China
Agricultural water trade under farmland fragmentation: A simulation analysis of an irrigation district in northwestern China
复制标题
DOI：
10.1016/j.agwat.2013.03.005
复制
发表时间：
2013-05
影响因子：
6.7
通讯作者：
Taro Takahashi;H. Aizaki;Yingchun Ge;M. Ma;Y. Nakashima;Takeshi Sato;Weizhen Wang;Nanae Yamada
中科院分区：
文献类型：
--
作者：
Taro Takahashi;H. Aizaki;Yingchun Ge;M. Ma;Y. Nakashima;Takeshi Sato;Weizhen Wang;Nanae Yamada
许多国家采用农业用水贸易作为克服灌溉地区缺水的一项措施。如果应用得当，该系统可以将更多的水分配给生产力更高的农民，从而提高资源利用效率。尽管有着巨大的优势，但张掖市建立的水交易计划实际上被当地农民忽视，渗透率不到总用水量的百分之一。为了调查制度失灵的原因，广泛采访了农民、农民协会和有关政府机构。在此基础上，根据实地收集的信息，构建了一个复制当地水市场的非线性规划模型。建模分析表明，农民的优化问题的解决方案，据此模拟在地理上分散的地块，是典型的研究领域，是显着不同的假设下得出的单块操作。价格干预的最佳水平也不同的两个业务，作为农田的碎片诱导额外的水需求。这一结果再次表明，根据当地情况进行市场设计十分重要，无条件接受其他地方普遍和成功的经济体制也是危险的。
Agricultural water trade has been adopted in many countries as a measure to overcome water deficiency facing irrigated regions. When correctly applied, the system can allocate more water to more productive farmers, thereby improving efficiency in resource utilisation. Despite this enormous advantage, the water trading scheme set up in Zhangye City, of China's arid northwestern region, is being virtually ignored by local farmers, with the penetration rate standing at less than one percent of the total water use. To investigate the reasons behind the system's malfunction, farmers, farmers’ associations, and relevant governmental agencies were extensively interviewed. Then, based on the information collected from the field, a nonlinear programming model replicating the local water market was constructed. The modelling analysis showed that the solutions for the farmer's optimisation problem, hereby simulated under geographically scattered plots that are typical in the study area, are significantly different from those derived under the assumption of single plot operations. The optimal level of price intervention also differs for the two operations, as the fragmentation of farmland induces additional water demand. This result reiterates the importance of market designs that are tailored to local situations, and the danger of unconditional acceptance of economic institutions that are prevalent and successful elsewhere.