基于耗散结构系统熵模型的乡村生产空间系统有序性研究

通过分析乡村生产空间系统的耗散结构特征,建立系统熵模型,运用关联熵和运行熵,从系统的主体（多元主体）、客体（地）和环境三要素入手构建指标体系,讨论系统内部结构和运行状态的有序性,并以重庆市合川区龙市镇为研究区予以实证,研究表明：研究区乡村生产空间系统关联熵先增后减,系统内部结构有序性呈现阶段性特征,2008—2011年主要受城市化无序扩张和土地利用方式低效粗放等因素影响,系统内部结构趋于混乱无序,2011—2015年主要因财政支农力度增强、农业投入产出水平提高、生态修复力度加大等因素刺激,系统内部结构逐渐趋于有序化;2008—2015年,乡村生产空间系统运行熵逐年减小,在农业综合开发投入大幅增加引起的生产条件改善、产业结构调整与提档升级等驱动下,呈现出持续有序化的发展态势;围绕乡村生产空间系统的内部结构及运行状态的演化规律,从优化土地利用结构、构建现代农业产业体系、编制和完善相关规划、培育新产业新业态入手,提出相关策略,以促进乡村生产空间系统有序健康发展。

Research on the order of rural production space system based on a system entropy model in the dissipative structure

By analyzing the dissipative structure characteristics of rural production space system, and establishing system entropy model using correlation entropy and running entropy, this study establishes an index system following three elements: the subjects of rural production space system (the multiple subjects), the objects (the land), and the environment. Then, taking Longshi Town in Hechuan district in Chongqing as an example, this study discusses the order of internal structure and the order of running state of rural production space system. The results show the following aspects. The correlation entropy of the rural production space system of the study area increased first and then decreased, with its internal structure presenting a periodic characteristic from disordering to ordering. From 2008 to 2011, the system internal structure tended to be chaotic and disordered, resulting in irregular urban expansion and extensive land use. From 2011 to 2015, driven by the strengthened financial support to agriculture, the improvement of agricultural input-output level, the enhancement of ecological restoration and so on, the system internal structure gradually entered the stage of orderly development. From 2008 to 2015, the running entropy of rural production space system decreased year by year, which showed a law of continuous ordering. This phenomenon is attributed to the industrial structure adjustment as well as the production conditions improvement brought by the substantially increased investment of comprehensive agricultural development. Therefore, centering on the evolution law of the internal structure and running state of rural production space system, this study puts forward strategies from the land use structure optimization, the modern agricultural industry system construction, the planning preparing and perfection, and the rise of new industries and new types of business. Hereby, rural production space system is expected to develop towards orderly and healthy way.