The Sea:JOURNAL OF THE KOREAN SOCIETY OF OCEANOGRAPHY (한국해양학회지:바다)

The Korean Society of Oceanography (한국해양학회)
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Emergy Valuation of Tidal Flat Ecosystems in Korea: I. Characteristics of Environmental Emergy Inputs

에머지 방법론을 이용한 갯벌생태계의 가치 평가: I. 에머지 유입 특성

  • NAM, JUNG HO (Division of Marine Policy Research, Korea Maritime Institute) ;
  • KANG, DAE SEOK (Department of Ecological Engineering, Pukyong National University)
  • Received : 2016.07.13
  • Accepted : 2016.09.20
  • Published : 2016.11.30
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Abstract

This study analyzed the characteristics of emergy inputs from environmental sources that are essential in maintaining ecological processes and providing ecosystems services of the tidal flat ecosystems in Korea. Environmental sources provided a total of $4.98{\times}10^{21}sej/yr$ of emergy to the tidal flats of Korea. The emergy inputs from environmental sources were worth 1,141 billion ￦/yr. This is the value of environmental conditions that are the basis of ecosystem services provided by the tidal flat ecosystems. The emergy input per hectare to regional tidal flats decreased along the coastline from northwest to southeast, with the highest input in the Incheon-Gyeonggi area in the central western part of the Korean coast and the lowest input in the Busan area in the southeastern end. This reflects the general distribution pattern of the magnitude of tidal ranges along the Korean coast. There was no a clear-cut relationship between emergy inputs per unit area and fishery production(expressed in emergy quantity) per unit area. However, tidal flats in the west coast with higher emery inputs per unit area produced more fishery products than those in the south coast with lower emergy inputs, suggesting a possibility that the emergy inputs could be used for the rapid evaluation and comparison of the potential for ecosystem service provision by individual tidal flats.

전국 및 지역별 갯벌을 대상으로 갯벌생태계의 생태적 과정을 유지하고 생태계서비스를 제공하는데 기본 토대인 자연환경에너지(태양, 바람, 파도, 강수, 조석 등)를 통한 에머지 유입 특성을 분석하였다. 우리나라 갯벌생태계로 유입하는 자연환경에너지가 공급한 에머지 총량은 $4.98{\times}10^{21}sej/yr$이었는데, 이는 갯벌생태계의 유지에 필요한 기본적인 환경 조건이 제공하는 에머지량에 해당한다. 갯벌생태계로 유입하는 에머지량을 화폐 단위로 환산하면 1조1,412억 원/yr으로, 이것은 갯벌생태계가 제공하는 생태계서비스를 생산하는데 토대가 되는 환경적 조건의 가치에 해당한다. 지역별 갯벌의 면적 차이를 고려하여 단위면적당으로 나타낼 경우 우리나라 연안의 일반적인 조차 분포를 따라 인천-경기 지역에서 부산 지역으로 갈수록 단위면적당 에머지 유입량이 감소하였다. 지역별 갯벌의 단위면적당 에머지 유입량과 단위면적당 수산물 생산의 에머지량을 이용하여 갯벌생태계를 유지하는데 필요한 자연환경에너지의 에머지 유입 특성과 생태계서비스 사이의 관계를 개괄적으로 살펴본 결과 지역별 갯벌로 유입한 에머지량과 수산물 생산의 에머지량 사이에는 아주 명확한 관계가 나타나지는 않았다. 그러나 단위면적당 에머지 유입량이 더 많은 서해안 갯벌에서 생산한 수산물의 에머지량이 남해안 갯벌에서 생산한 수산물의 에머지량보다 더 많아 개별 갯벌생태계의 생태계서비스 잠재력을 나타내는데 자연환경에너지를 통한 에머지 유입량의 활용 가능성을 보여주었다.

Keywords

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