在借助系统科学理论建立黄土高原生态与经济系统协调发展耦合模型基础上,提出了黄土高原生态与经济系统耦合发展的评判标准和基本类型,并对黄土高原各县域生态与经济系统协调发展状况进行了研究.结果表明:黄土高原生态经济系统之间的相互作用可分为严重失调发展、轻度失调发展、低水平协调发展、高水平良好协调发展4个阶段,在不同的发展阶段又存在着损益-拮抗-磨合-主导-同步发展的循环往复过程;黄土高原生态与经济系统耦合发展度整体上处于较低水平,其中62.7%的县域处于严重失调发展阶段,30.1%的县域处于轻度失调发展阶段,7.1%的县域处于低水平协调发展阶段.基于耦合模型所建立的协调耦合度,能够较好地反映黄土高原经济社会与生态环境之间的交互胁迫耦合发展状况.正确认识黄土高原生态与经济系统耦合规律,采取适当的发展模式,对于促进黄土高原县域生态与经济协调发展具有重大意义. Based on the coupled theory of system science and the establishment of the coupling model of ecological and economic system in the Loess Plateau, this paper puts forward the evaluation criteria and the basic types of the coupling development of ecological and economic systems in the Loess Plateau. The coordinated development of ecological and economic systems in all counties of the Loess Plateau The results show that the interaction between the eco-economic systems in the Loess Plateau can be divided into four stages: serious disorder development, mild disorder development, low-level coordinated development and good coordinated development at a high level, and at different stages of development The process of ecological restoration and economic development in the Loess Plateau is at a relatively low level as a whole, in which 62.7% of counties are in the stage of serious imbalance development and 30.1% of counties are in mild imbalance At the stage of development, 7.1% of the counties are at a low level of coordinated development stage.On the basis of the coupling degree established by the coupling model, it can well reflect the interaction and development of coupling between the economic, social and ecological environment in the Loess Plateau. Coupled with the economic system law, take the appropriate mode of development for County into the Loess Plateau ecological and economic coordination is of great significance.