从气候条件、立地条件、土壤条件、灌排条件4个方面综合筛选土地适宜性评价因子,使用多指标综合评价方法测算水稻、小麦、春玉米土地适宜性,进而考虑水资源约束和水稻对于盐碱化耕地的改良作用,进行水稻种植布局优化。结果显示:(1)适宜种植水稻、小麦、春玉米的耕地分别占各种植面积的71.01%、80.81%和38.85%。(2)假设缩减的水稻面积全部改为玉米,至少需要缩减1 005.23 km
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,此时能够节省水资源8.93亿m3,达到最低节水要求。若缩减的水稻面积全部改种小麦,则缩减的水稻面积至少为1 129.47 km
Wenlan Ke,Jinghua Sha,Jingjing Yan,Guofeng Zhang,Rongrong Wu.A Multi-Objective Input–Output Linear Model for Water Supply, Economic Growth and Environmental Planning in Resource-Based Cities[J].Sustainability,2016.
Javaid Afzal,David H. Noble,E. K. Weatherhead.Optimization Model for Alternative Use of Different Quality Irrigation Waters[J].Journal of Irrigation and Drainage Engineering,1992(2).