基于信息熵的乡村生产空间系统演化及其可持续发展能力

The evolution and sustainable development capacity of rural production space system based on information entropy

乡村生产空间系统演化是乡村生产空间系统内部及其与外部系统间进行物质、能量和信息交换的表征或结果,这一结果的优劣是实现系统可持续发展的内生物质基础与保障。以重庆市为研究区,以2001-2015年为研究时段,基于信息熵,从支持型输入熵、压力型输出熵、氧化型代谢熵、还原型代谢熵四个方面构建乡村生产空间系统演化指标体系,揭示乡村生产空间系统的演变规律和可持续发展能力,探析乡村生产空间系统熵变与可持续发展能力之间协同演化过程中的相关关系,设计乡村生产空间系统优化路径。结果表明:(1)2001-2015年重庆市乡村生产空间系统熵流为0.017～-0.049,熵产生为0.204～0.059,均呈下降趋势,乡村生产空间系统的协调性和活力得以增强;总熵变为0.221～0.010,呈相同趋势,乡村生产空间系统有序度不断提高,总体上向健康水平发展。(2)2001-2015年重庆市乡村生产空间系统可持续发展能力得分为1.285～2.803,呈上升趋势,系统可持续发展态势良好,并不断向可持续方向演进。(3)可持续发展能力得分与支持型输入熵、还原型代谢熵正相关,与压力型输出熵、氧化型代谢熵负相关,与熵流、熵产生和总熵变负相关。

The evolution of the rural production space system is the representation or result of the exchange of material,energy and information within and out of the rural production space system.The pros and cons of this result is the endogenous material basis and guarantee which can realize the sustainable development of the system.This study sets Chongqing as the research area with a research period from 2001 to 2015 and establishes the index system of rural production space system evolution from four aspects of support-type input entropy,pressure-type output entropy,oxidation-type metabolism entropy and deoxidization-type metabolism entropy based on information entropy.The study reveals the evolution law and sustainable development capacity of rural production space system,analyzes the relationship between entropy change and sustainable development capacity of rural production space system in the process of co-evolution,and designs the optimal path for rural production space system.The results shows that:(1)From 2001 to 2015,the entropy flow of rural production space system in Chongqing is from 0.017 to-0.049 and the entropy production is from 0.204 to0.059,which shows a downward trend;and the coordination and vitality of rural production space system are enhanced.The total entropy change is from 0.221 to 0.010,showing the same trend;the degree of order in rural production space system keeps improving,and generally,it is developing towards a healthy level.(2)From 2001 to 2015,the score of sustainable development capacity of rural production space system in Chongqing is from 1.285 to 2.803,showing an upward trend.The sustainable development of the system is in a good state and is evolving towards the sustainable direction.(3)The score of sustainable development capacity is positively correlated with support-type input entropy and deoxidization-type metabolism entropy,negatively correlated with pressure-type output entropy and oxidation-type metabolism entropy,and negatively correlated with entropy flow,entropy production and total entropy change.