ZHANG Qiu-feng, BAI Jie, MA Yu-yan, GAO Wen-sheng, TU Jian-bo. Research on the method for evaluating ecological restortaion effect in the coastal zone of Tianjin[J]. Chinese Journal of MARINE ENVIRONMENTAL SCIENCE, 2019, 38(5): 782-789, 795. DOI: 10.12111/j.mes20190520
Citation: ZHANG Qiu-feng, BAI Jie, MA Yu-yan, GAO Wen-sheng, TU Jian-bo. Research on the method for evaluating ecological restortaion effect in the coastal zone of Tianjin[J]. Chinese Journal of MARINE ENVIRONMENTAL SCIENCE, 2019, 38(5): 782-789, 795. DOI: 10.12111/j.mes20190520

Research on the method for evaluating ecological restortaion effect in the coastal zone of Tianjin

  • According to ecosystem service functions, an evaluation index system is established for evaluating the effects of coastal zone ecological restoration, which includes 15 indexes of four aspects of services such as supply service, regulation service, cultural service and support service.The analytic hierarchy process (AHP) is adopted to determine the weights of each indexes and the concept of Commercial Bank interest rate is introduced to build up the evaluation model of ecological restoration effect.By using this index system and evaluation model, the values of the ecosystem service functions in the coastal zone of Tianjin in 1983, 2005, 2012 and 2016 are estimated.The results how that by taking 1983 as the base year, the total value of the ecosystem services in the coastal zone of Tianjin in 2005, 2012 and 2016 has fallen by 82.47%, 89.78% and 88.66%, respectively, tending to decline.However, the proportion of leisure and entertainment to the total value tends to increase, indicating that through the local ecological restoration this function is improved quickly and the cultural objectives of ecological restoration can be achieved basically.For the life support service function of the ecosystem, however, it is difficult to restore to the historical level.Generally speaking, the ecological restoration projects that have been carried out locally in the coastal zone of Tianjin in the past 30 years has not yet received a good effect on the restoration of ecosystem service functions in the whole coastal zone of Tianjin.It is difficult to make up the losses caused by the continuous degradation of the coastal zone through the ecological restoration in a short period.
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