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NTIS 바로가기생태와 환경 = Korean journal of ecology and environment, v.50 no.3, 2017년, pp.314 - 324
최종윤 (국립생태원 생태평가연구실) , 김성기 (국립생태원 생태평가연구실) , 윤종학 (국립생태원 생태평가연구실) , 주기재 (부산대학교 생명과학과)
In order to consider application and evaluation of value and class of domestic wetland, we investigated 146 wetlands located Gyeongsangnam-do using Rapid Assessment Method (RAM). We utilized Self-Organizing-Map (SOM) to analysis relationship between evaluation index and land coverage ratio surroundi...
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핵심어 | 질문 | 논문에서 추출한 답변 |
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습지는 어떤 생태계인가? | 습지는 전 세계적으로 작은 면적을 차지하지만, 연평균 1,000 gC m-2 yr-1 정도의 생산력을 가질 정도로 지구상에서 가장 생산성이 높은 생태계이다 (Sutton-Grier and Megonigal, 2011; Zhu et al., 2011). 습지는 육상생태계와 수생태계 간의 전이지역으로 다양한 영양분과 먹이원이 집결되며, 수생식물이나 저질 등이 복잡하게 구성되어 다양한 서식공간을 제공하기 때문에 많은 생물들이 서식하기 적당한 환경이다. | |
습지를 보존하고 관리하는 문제가 상당한 주의와 노력이 필요한 이유는 무엇인가? | 습지의 높은 생물다양성으로 인해, 현재 160개국이 국제습지협약 (Ramsar Convention on Wetlands)에 가입하여 2018개의 습지를 보호·관리하고 있다(Ramasr Convention on Wetlands homepage, 2015). 하지만 습지의 생태적 중요성이 인식된 것은 최근이며 (약 20~30년), 과거에는 쓸모없는 지역으로 인식되어 농지개간, 제방건설, 위생 관리 등의 이유로 개발되어 전 세계적으로 많은 습지가 훼손 또는 소멸되었다 (Lehtinen et al., 1999). 특히, 습지는 수심이 얕고 비교적 작은 면적이기 때문에 농경지로 전환이 용이하다 (Verhoeven and Setter, 1989). 최근에는 기후변화와 같은 불가항력에 가까운 교란과 함께 토지이용 변화, 외래종 침입, 경제상황 변화 등 습지의 서식처와 생물다양성이 위협받고 있다(Findlay and Bourdages, 2000; Wood et al., 2003). | |
국내 습지의 가치와 등급을 평가하고 적용방안을 고찰하기 위해 무엇을 하였는가? | 국내 습지의 가치와 등급을 평가하고 적용방안을 고찰하기 위해, 경상남도에 위치한 146개 습지를 대상으로 신속평가방법 (Rapid Assessment Method)을 이용한 습지평가를 수행하였다. 각 습지에서 평가된 8개 대항목과 주변 피복 비율 간 관계를 분석하기 위해 Self-Organizing Map(SOM) 알고리즘을 이용하여 패턴분석을 실시하였다. |
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