JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2025, Vol. 49 ›› Issue (2): 212-220.doi: 10.12302/j.issn.1000-2006.202306028

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Ecological health assessment based on fuzzy analytic hierarchy process: a case study of Liziping National Nature Reserve

FENG Tingting1(), ZHENG Yang2,3,4, LUO Wei2,3,4, DAI Qinlong2,3,4, LI Jianwei2,3,4, WANG Fei1, TUO Yunfei1,*()   

  1. 1. College of Ecology and Environment, Southwest Forestry University, Kunming 650224, China
    2. Sichuan Liziping National Nature Reserve Administration, Shimian 625400, China
    3. Open Laboratory of Shimian Research Center of Giant Panda Small Population Conservation and Rejuvenation, Shimian 625400, China
    4. Liziping Giant Panda’s Ecology and Conservation Observation and Research Station of Sichuan Province, Shimian 625400, China
  • Received:2023-06-28 Accepted:2024-05-08 Online:2025-03-30 Published:2025-03-28
  • Contact: TUO Yunfei E-mail:ftingting@163.com;tyunfei@163.com

Abstract:

【Objective】The critical challenges in ecological health assessment involve establishing a comprehensive assessment system and selecting appropriate indicators. This study aims to evaluate the ecological health status of nature reserves to provide a scientific basis for improving the regional ecological environment. 【Method】This study established a comprehensive ecological health evaluation index system for the Sichuan Liziping National Nature Reserve. The system encompasses five criteria: natural resource characteristics, river ecological resources, social value, service management system, and ecological environment conditions, further subdivided into 31 specific indicators. A fuzzy analytic hierarchy process (AHP) model was employed to evaluate the reserve’s ecological health. 【Result】The evaluation revealed the relative weights of the criteria as follows: natural resource characteristics (0.157), river ecological resources (0.277), social value (0.124), service management system (0.073), and ecological environment conditions (0.370). The maximum eigenvalue and consistency index were calculated as 5.158 and 0.040. Membership scores for natural resources, social value, and ecological environment conditions in “healthy” and “sub-healthy” states were 0.687 and 0.218, 0.504 and 0.373, 0.608 and 0.212, respectively. River ecological resources showed membership scores of 0.509 in “high quality” and 0.275 in “sub-healthy” states, while the service management system exhibited a “healthy” state membership score of 0.394. Overall, the ecological health evaluation yielded scores for “high quality” (0.232), “healthy” (0.452), “sub-healthy” (0.255), “unhealthy” (0.061), and “sick” (0) membership states. The comprehensive membership score was 0.452, categorizing the reserve’s ecological health as “healthy.” 【Conclusion】 This study offers a scientific foundation and technical guidance for ecological conservation and the integrated management of the ecological environment in the Liziping National Nature Reserve.

Key words: ecological health, fuzzy analytic hierarchy process, membership degree, Liziping National Nature Reserve

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