Abstract:

 This paper, based on case study on Qinghe county, discusses the application of system theory in land use structural optimization, analyzes the situation and issues of land use structure, and establishes grey linear planning model combined with economic needs and planning indexes which is employed to set up three plans of land use structural optimization, among which the best one is selected by using AHP. In 2020, farmland:park:forest:other farmland:urban land:rural residential land:plant land:transportation land: water works land:other construction land:unused land shall be 68.03 :3.14:1.91:5.56:6.06:10.72:  0.14:1.57:0.07:0.10:2.71, which is an optimized structure, favorable for ecological, economic and social benefits and sustainable development.

Key words:  grey linear planning, AHP, land use structure,
optimization, Qinghe county

摘要：

以清河县为实证研究对象，探讨如何运用系统理论解决土地利用结构优化的问题。首先，定性分析清河县土地利用结构现状及存在问题。其次，结合县域社会经济发展需求及相关规划控制指标，建立灰色线性规划模型，构造出3个土地利用结构优化备选方案。最后，用层次分析法进行方案择优，得出清河县土地利用结构最优方案。结果显示，清河县2020年耕地、园地、林地、其他农用地、城镇用地、农村居民点、工矿用地、交通用地、水利用地、其他建设用地、未利用地面积比例应该调整为68.03:3.14:1.91:.5.56:6.06:10.72:0.14:1.57:0.07:0.10:2.71，这时土地利用结构最优，有利于充分发挥土地利用的生态、经济和社会效益，促进区域可持续发展。

关键词: 灰色线性规划, 层次分析法, 土地利用结构, 优化, 清河县