Journal of Ecology and Rural Environment ›› 2023, Vol. 39 ›› Issue (3): 335-343.doi: 10.19741/j.issn.1673-4831.2022.0874

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Assessment of Ecosystem Service Values of Peat Swamp in Tianbaoyan National Nature Reserve by Using Emergy Analysis

YAN Yu-tong1,2, CHEN Hua-dan1,2, YOU Wei-bin1,2, LIU Jin-shan3, CAI Chang-tang3, HE Dong-jin1,2,4   

  1. 1. College of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, China;
    2. Fujian Southern Forest Resources and Environmental Engineering Technology Research Center, Fuzhou 350002, China;
    3. Fujian Tianbaoyan National Nature Reserve, Yong'an 366032, China;
    4. Fujian Vocational College of Agriculture, Fuzhou 350002, China
  • Received:2022-08-24 Online:2023-03-25 Published:2023-03-21

Abstract: To assess the values of ecosystem services provided by peat swamp habitats, four typical peat swamp ecosystems (Phyllostachys heteroclada peat swamp, Palhinhaea cernua peat swamp, Juncus effusus peat swamp, and Sphagnum magellanicum peat swamp) were selected in the Tianbaoyan National Nature Reserve (TNNR) in Fujian Province. Using the emergy theory, an evaluation system for the peat swamp ecosystem service values was established, and the service values of the different types of peat swamp ecosystems in TNNR were assessed. The results show that: (1) The total emergy of peat swamp ecosystem services in TNNR was 1.01×1019 sej·a-1, with a macroeconomic value of 9.99×106 yuan·a-1. The direct service emergy value was 5.45×1017 sej·a-1, worth 5.36×105 yuan·a-1; the indirect service emergy value was 2.73×1018 sej·a-1, worth 2.69×106 yuan·a-1; the existing service emergy value was 6.86×1018 sej·a-1, worth 6.76×106 yuan·a-1. (2) The order of peat swamp ecosystem service value per unit area was Sphagnum magellanicum peat swamp > Juncus effusus peat swamp > Palhinhaea cernua peat swamp > Phyllostachys heteroclada peat swamp. (3) The order of the value of each service function was culture & research (60.28%) > water purification (27.03%) > biodiversity maintenance (6.65%) > biomass increase (4.27%) > NPP increase (0.81%) > water conservation (0.74%) > peat storage (0.39%) > carbon fixation and oxygen release (0.16%). These findings provide theoretical support for the ecological compensation and differentiated protection of peat swamp wetlands.

Key words: emergy analysis, peat swamp ecosystem, service function, assessment, Tianbaoyan National Nature Reserve

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