首页|基于集对分析与三角模糊数的滨海湿地生态系统健康评价

基于集对分析与三角模糊数的滨海湿地生态系统健康评价

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  • 国家科技期刊平台
  • NETL
  • NSTL
  • 万方数据
  • 维普
滨海湿地是海洋和陆地相互作用形成的生态交错带，对自然环境变化和人类活动作用响应最为敏感，使其成为相对脆弱的生态系统。科学评价滨海湿地生态系统健康状况及其胁迫因子，对湿地生态系统恢复重建与可持续发展具有重要的现实意义。针对湿地生态系统评价问题的不确定性和模糊性特征，运用压力-状态-响应（PSR）模型构建滨海湿地生态系统健康评价指标体系，运用层次分析法确定了各指标的权重，根据集对分析原理定量描述评价样本与评价标准等级之间隶属关系的模糊性，利用分段三角模糊数表示集对差异度系数的连续变化过程和不确定性，进而建立了基于集对分析与三角模糊数耦合的滨海湿地生态系统健康评价模型，并将该模型应用于海兴湿地生态系统健康现状评价。结果表明：海兴湿地生态健康综合联系数为-0.380，相应的级别特征值为3.760，系统整体处于一般病态水平。其中压力系统、状态系统和响应系统的级别特征值分别为3.580、3.976和2.948，说明海兴湿地生态系统的自然状态受到了人类活动过度干扰，外界胁迫引起系统的结构失调和服务功能衰退。影响系统健康的主要因子为农药施用强度、水资源开发利用率、湿地面积退化率、水体富营养化、环保投资占GDP比重、湿地保护意识等。该模型计算过程简单直观，评价结果客观合理，在湿地生态系统健康评价中具有参考价值。
Assessment of coastal wetland ecosystem health based on set pair analysis and triangular fuzzy numbers
Coastal wetland is an ecotone, formed by the interaction between sea and land, which is the most sensitive to environmental changes and human activities, and makes it become a relatively fragile ecosystem. Scientific evaluation of coastal wetland ecosystem health and its stress factors have important practical significance in restoration and sustainable development of wetland ecosystem. According to problem of uncertainty and fuzziness in wetland ecosystem system assessment, the Pressure-State-Response (PSR) model is used to establish assessment index system for coastal wetland ecosystem health. The weights of indexes are determined using the analytic hierarchy process (AHP). The set pair analysis method(SPA) is applied to depict the fuzziness of subordinate relation between the evaluation sample and grade classification standard. The triangular fuzzy numbers are used to express the continuous changing process and uncertainty of component coefficients of discrepancy degree. Moreover, a coupling method of set pair analysis and triangular fuzzy numbers for health assessment of coastal wetland ecosystem is established. The method is applied to current situation assessment of ecosystem health in Haixing wetland. The result shows that the comprehensive connection number of ecosystem health is-0.380 in Haixing wetland, and its corresponding grade characteristic value is 3.760, which can be categorized as a general sick level. The grade characteristic value of the pressure subsystem, the state subsystem and the response subsystem are 3.580, 3.976 and 2.948 respectively. It indicates that natural state of Haixing wetland have been excessively disturbed by human activities, which leads to system structural imbalance and the decline of the service function under the external stress. The main factors affecting the health of ecosystem system are the using intensity of pesticides, utilization ratio of water resources, degradation ratio of the wetland area, water eutrophication, proportion of environmental protection investment in GDP, consciousness of wetland protection, etc. The proposed model is simple and intuitive, and the result more objective and reasonable, and would be of reference value in assessing wetland ecosystem health.

ecosystem healthset pair analysistriangular fuzzy numbers

彭涛、陈晓宏、王高旭、李英海、刘冀

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三峡大学水利与环境学院，湖北 宜昌 443002

南京水利科学研究院水文水资源与水利工程科学国家重点实验室，江苏 南京 210029

中山大学华南地区水循环与水安全广东省普通高校重点实验室，广东 广州 510275

生态系统健康 集对分析 三角模糊数

国家自然科学基金国家自然科学基金国家自然科学基金湖北省自然科学基金湖北省教育厅自然科学研究计划项目湖北省教育厅自然科学研究计划项目南京水利科学研究院水文水资源与水利工程科学国家重点实验室开放基金

5121001351109138411015112012FFB03802Q2013167Q201213012011491711

2014

生态环境学报
广东省生态环境与土壤研究所 广东省土壤学会

生态环境学报

CSTPCDCSCD北大核心
影响因子：1.608
ISSN：1674-5906
年,卷(期)：2014.(6)
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