Optimization allocation of irrigation water resources based on crop water requirement under considering effective precipitation and uncertainty
Optimization allocation of irrigation water resources based on crop water requirement under considering effective precipitation and uncertainty
复制标题
考虑有效降水和不确定性的基于作物需水的灌溉水资源优化配置
DOI：
10.1016/j.agwat.2020.106264
复制
发表时间：
2020-09-01
影响因子：
6.7
通讯作者：
Yang, Jiantao
中科院分区：
文献类型：
--
作者：
Gong, Xinghui;Zhang, Hongbo;Yang, Jiantao
今天，水资源短缺问题越来越严重。在现实中，由于灌溉系统的复杂性，不确定性是不可避免的。为此，建立了灌溉水资源优化配置的不精确区间规划模型，并以陕西省泾惠渠灌区为例进行了应用研究。以经济效益最大化为规划目标，考虑作物蒸散量和有效降水量，对灌溉水资源优化配置有重要影响。在不同代表性水文年型下，得到了不同的地表水和地下水联合利用的最优灌溉和种植结构方案。从结果来看，泾惠渠灌区水资源短缺问题十分严重，对灌区的发展产生了很大的负面影响。此外，模型中有效降水的引入还节约了大量的水资源，如在P = 25%时，玉米的耗水量可节约总耗水量的47.36%。决策者可以根据实际情况选择所需的最优方案。
Today, water resources shortage becomes more and more serious. In reality, uncertainties are inevitable due to the complex of irrigation system. Therefore, an inexact interval programming model was developed for optimizing irrigation water resources, which was also applied to a case study in Jinghuiqu irrigation district, Shaanxi Province, China. In the case study, maximum economic benefit was made as planning objective and crop evapotranspiration and effective precipitation were took under consideration, which have significant influence on optimization allocation of irrigation water resources. Different optimal irrigation and planting structure schemes, which have the ability to conjunctive use of surface water and groundwater, were obtained under different representative hydrological year. From the results, water resources shortage is very serious which have made great negative influence on the development of Jinghuiqu irrigation district. In addition, a lot of water resources has been saved by introducing effective precipitation in the model, such as 47.36% of total water consumption was saved in maize when P = 25%. Furthermore, the decision makers can choose the desired optimal scheme according to the actual situation.