Using Multi-objective Optimization to Restructure Agriculture with Consideration of the Constrains on Groundwater Extraction: Taking Hengshui as an Example
HU Hongjing
WU Xinmiao
QI Chengwei
QIE Zhihong
Abstract：In this paper, we proposed a multi-objective optimization method to help restructure agriculture in at-tempts to resolve some problems facing agriculture production in north China, which include water resource shortage and overuse of groundwater forirrigation. The method is based on water production function for crops, with consideration of the constraints on groundwater extraction. Optimizing agriculture structureandwater use for irrigation could reduce agricultural water consumption and increase economic benefit. We took Hengshui as an example, calculating the optimized agriculture and water allocation for irrigation by maximizing economic bene-fit and minimizing agricultural water consumption;the optimization was solved by the improved NSGA-Ⅱ algo-rithm. The results showed that the planting areas of maize and peanut should be increased at the expense of win-ter wheat. We also found that rationally increasing the price of water for irrigation could reduce the areas of high water-demanding crops and increase the cultivation of low water-demanding crops. The results of our work pro-vide a guidance to adjusting agricultural water price and re-constructing the agriculture in this region.
Keywords：water-saving extractionprice of irrigating waterplanting areairrigation waterNSGA-Ⅱ
Publication Date：2017-01-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：5( 95-99 )