基于网络分析的生态建设评估指标体系定量选取——以福建省为例

科学有效的指标体系是开展区域生态建设评估以及规划、管理的重要技术手段。然而目前在生态指标体系构建中仍缺乏对指标内涵的系统研究,同时指标的选取过程不够透明,掺杂诸多主观臆断,损害了生态指标体系构建的科学性和有效性。针对福建省生态建设实践,将网络分析与量化指标选择过程相结合,(1)根据福建省生态建设规划和目标,建立主题导向的生态省建设评估网状指标体系;(2)从因果联系、生态过程和管理需求三方面分析各个备选指标之间的相互联系,形成基于主题导向的生态指标网络;(3)根据生态指标应用的科学性和实用性标准,基于网络分析原理,建立生态建设评估指标选择标准矩阵和备选指标矩阵;(4)构建面向经济社会成本和生态完整性的指标选取模型,定量化选取符合福建省实际发展特征的生态建设评估操作指标体系。将有助于深入理解生态建设评估指标体系的内涵,提高指标体系构建的科学性和系统性,提升生态指标体系在实际生态建设评估、规划和管理应用中的效用。

Quantitative selection research on the evaluation indicators system for the ecological construction based on network analysis:a case study of Fujian

Eco-province, eco-city and eco-county construction programs started in China in 2000, and since then, there have been more than 15 provinces including Fujian, Hainan, Zhejiang, Jiangsu etc. completed eco-province construction planning. Scientific and effective indicator system is an important tool to carry out the assessment, planning and management of regional ecological construction. However, some problems still exist in the construction of ecological indicator system, such as lack of systematic study on the essence of the indicator and subjective process of indicator selection, which severely impair the science and validity of the ecological indicator system. An objective and scientific process of selection supplies the way for fast ecological construction planning and its adjustment in the future. This paper combines the network analysis and quantitative selection of indicators to build an ecological indicator system based on the previous practice in Fujian Province. We (1)analyzed the main problems existed in the ecological construction, implementation and development process, summarized the previous assessment indicators in the current ecological construction, studied the targets of Fujian eco-province construction practice, and established theme-oriented eco-province construction assessment network indicator system which contained 4 hierarchies and 55 concrete indicators representing experts and stakeholders'' opinions; (2)identified the relationships among the indicators at the same or different hierarchies through the analysis of the cause-effect relationship, ecological processes and management requirements, and transformed them into an ecological hierarchy network (EHN) framework and assigned the weights of all the indicators based on the hierarchical structure and complex linkages of the EHN framework; (3)established indicator selection standard matrix which included measurable, vulnerable, predictable, typical, controllable, integrative, responsive, and stable criteria and built alternative indicator matrix of assessment system for ecological construction according to the scientific and efficient application standards of ecological indicator; (4)built a multi-objective selection model concerning socio-economic costs and ecological integrity and quantitatively select the ecological indicators system that is suitable for Fujian eco-province construction practice by genetic algorithm method. According to the selection results, at least 44 concrete indicators should be selected in the ecological construction assessment system of Fujian Province, 11 indicators were dropped out from the 55 alternative concrete indicators. The results showed that our research would be helpful for understanding the essence of the assessment indicator system of ecological province construction, improving the scientific and systematic level of indicator system construction, and enhancing the practicability of ecological indicator system for ecological construction assessment, planning and management. For the reason that it is hard to simulate the whole system by a purely mathematical model due to the limited understanding of complex ecosystem and social ecological system, it is suggested that the theme-oriented framework and network framework should be coupled with subjective and quantitative indicator selections for ecological construction practices of other provinces in China.