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The Relationship between Stand Mean DBH and Temperature at a Watershed Scale: The Case of Andong-dam Basin

유역단위에서의 임목평균흉고직경과 기온 간의 관계: 안동댐 유역을 중심으로

  • Moon, Jooyeon (Department of Environmental Science and Ecological Engineering, Korea University, College of Life Sciences and Biotechnology, Korea University) ;
  • Kim, Moonil (Department of Environmental Science and Ecological Engineering, Korea University, College of Life Sciences and Biotechnology, Korea University) ;
  • Lim, Yoonjin (Applied Meteorology Research Division, National Institute of Meteorological Science) ;
  • Piao, Dongfan (Department of Environmental Science and Ecological Engineering, Korea University, College of Life Sciences and Biotechnology, Korea University) ;
  • Lim, Chul-Hee (Department of Environmental Science and Ecological Engineering, Korea University, College of Life Sciences and Biotechnology, Korea University) ;
  • Kim, Seajin (Department of Environmental Science and Ecological Engineering, Korea University, College of Life Sciences and Biotechnology, Korea University) ;
  • Song, Cholho (Department of Environmental Science and Ecological Engineering, Korea University, College of Life Sciences and Biotechnology, Korea University) ;
  • Lee, Woo-Kyun (Department of Environmental Science and Ecological Engineering, Korea University, College of Life Sciences and Biotechnology, Korea University)
  • 문주연 (고려대학교 환경생태공학과) ;
  • 김문일 (고려대학교 환경생태공학과) ;
  • 임윤진 (국립기상과학원 응용기상연구과) ;
  • ;
  • 임철희 (고려대학교 환경생태공학과) ;
  • 김세진 (고려대학교 환경생태공학과) ;
  • 송철호 (고려대학교 환경생태공학과) ;
  • 이우균 (고려대학교 환경생태공학과)
  • Received : 2016.08.04
  • Accepted : 2016.12.17
  • Published : 2016.12.30

Abstract

This study aims to identify the relationship between climatic factors and stand mean Diameter at Breast Height (DBH) for two major tree species; Pinus densiflora and Quercus mongolica in Andong-dam basin. Forest variables such as age, diameter distribution and number of trees per hectare from the $5^{th}$ and $6^{th}$ National Forest Inventory data were used to develop a DBH estimation model. Climate data were collected from six meteorological observatory station and twelve Automatic Weather System provided by Korea Meteorological Administration to produce interpolated daily average temperature map with Inverse Distance Weighting (IDW) method. Andong-dam basin reflects rugged mountainous terrain, so temperature were adjusted by lapse rate based correction. As a result, predictions of model were consistent with the previous studies; that the rising temperature is negatively related to the growth of Pinus densiflora whereas opposing trend is observed for Quercus mongolica.

본 연구는 안동댐 유역의 주요 수종인 소나무와 신갈나무를 대상으로 임분평균흉고직경과 기상인자의 관계를 규명하고자 수행되었다. 본 연구는 제5차 국가산림자원조사(NFI5)자료 중 임령, 임분평균흉고직경, ha당 본수자료를 사용해 임분단위의 평균흉고직경을 추정하는 모형을 개발하고, NFI6 자료로 검증을 실시하였다. 또한 안동댐 유역 수문기상관측소 6개소와 주변지역의 Automatic Weather System (AWS)의 관측자료에서 취득한 기온 자료를 사용하여 100m 공간해상도를 갖는 상세한 기상자료를 구축하였다. 연구대상지가 복잡한 산악 지형임을 고려하여 기온감률을 적용 후 Inverse Distance Weighted (IDW) 보간법을 적용하여 점 형태의 기상자료를 면 형태로 재구축하였다. 이와 같이 구축된 정밀기상인자와 직경생장간의 관계를 분석하였다. 분석결과 기온 상승은 소나무에 부(-)의 영향을 주며, 참나무류인 신갈나무에는 정(+)의 영향을 주는 것으로 나타나 기존 연구들과 일치하는 결과를 보였다. 본 연구는 수문기상관측소와 AWS 자료를 연계하여 세밀한 기후지도를 구축하고, 이를 통해 유역규모의 임목생장과 기후인자와의 관계를 파악했다는 것에 의미가 있으며 지역규모의 산림변화 예측 및 관리 계획 수립을 지원할 수 있을 것으로 사료된다.

Keywords

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