한국환경생태학회지 (Korean Journal of Environment and Ecology)

  • 제32권6호
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  • Pages.557-565
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  • 2018
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  • 1229-3857(pISSN)
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  • 2288-131X(eISSN)
한국환경생태학회 (Korean Society of Environment and Ecology)
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리기다소나무와 잣나무 낙엽의 분해율 및 분해과정에 따른 영양염류 함량 변화

Decay rate and Nutrient Dynamics during Litter Decomposition of Pinus rigida and Pinus koraiensis

  • 원호연 (국립생태원 생태기반연구실) ;
  • 이영상 (국립생태원 생태기반연구실) ;
  • 조수언 (공주대학교 생명과학과) ;
  • 이일환 (국립생태원 생태보전연구실) ;
  • 진선덕 (국립생태원 생태기반연구실) ;
  • 황소영 (국립생태원 생태조사연구실)
  • Won, Ho-yeon (Division of Basic Research, National Institute of Ecology) ;
  • Lee, Young-sang (Division of Basic Research, National Institute of Ecology) ;
  • Jo, Soo-un (Department of Biology, Kongju National University) ;
  • Lee, Il-hwan (Division of Ecological Conservation, National Institute of Ecology) ;
  • Jin, Sun-deok (Division of Basic Research, National Institute of Ecology) ;
  • Hwang, So-young (Division of Ecological Monitoring, National Institute of Ecology)
  • 투고 : 2018.06.21
  • 심사 : 2018.11.05
  • 발행 : 2018.12.31
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초록

국가장기생태연구사업의 일환으로 국내 주요 조림수종인 리기다소나무와 잣나무 낙엽의 분해율 및 분해과정에 따른 영양염류 함량 변화를 파악하였다. 분해 21개월경과 후 리기다소나무 낙엽과 잣나무 낙엽의 잔존률은 각각 $58.27{\pm}4.13$, $54.08{\pm}4.32$으로 잣나무 낙엽의 분해가 리기다소나무 낙엽보다 빠르게 진행되는 것으로 나타났다. 21개월경과 후 리기다소나무 낙엽과 잣나무 낙엽의 분해상수(k)는 각각 0.95, 1.08로 잣나무 낙엽의 분해상수가 높은 것으로 나타났다. 리기다소나무 낙엽과 잣나무 낙엽의 초기 C/N 비율은 각각 64.4, 40.6 이었으나 21개월경과 후에는 각각 41.0, 18.9로 점차 감소하였고, C/P 비율은 리기다소나무 낙엽과 잣나무 낙엽에서 초기에 각각 529.8, 236.5에서 21개월경과 후 384.1, 205.2로 감소하였다. 낙엽의 초기 N,P,K,Ca,Mg 함량은 리기다소나무 낙엽에서 각각 6.78, 0.83, 2.84, 0.99, 2.59 mg/g 이었으며, 잣나무 낙엽에서 각각 10.90, 1.87, 5.82, 4.79, 2.00 mg/g으로 마그네슘을 제외한 원소의 함량은 잣나무에서 높았다. 21개월 경과 후 N,P,K,Ca,Mg 잔존률은 리기다소나무 낙엽에서 각각 88.4, 77.6, 26.7, 50.5, 44.5%이었으며 잣나무 낙엽에서 각각 114.4, 61.3, 7.6, 115.2, 72.0%로 나타났다.

We examined the nutrient dynamics during the leaf litter decomposition rate and process of Pinus rigida and Pinus koraiensis in Gongju for 21 months from December 2014 to September 2016 as a part of National Long-Term Ecological Research Program in Korea. The remaining weight rate of P. rigida and P. koraiensis leaf litter was $58.27{\pm}4.13$ and $54.08{\pm}4.32%$, respectively, indicating that the P. koraiensis leaf litter decomposed faster than P. rigida leaf litter. The decay constant (k) of P. rigida leaf litter and P.koraiensis leaf litter after 21 months was 0.95 and 1.08, respectively, indicating that P. koraiensis leaf litter decayed faster than P. rigida leaf litter probably due to the difference of nitrogen concentration between the two. The C/N ratio of P. rigida and P. koraiensis leaf litter was 64.4 and 40.6, respectively, initially, and then decreased to 41.0 and 18.9, respectively, after 21 months. The C/P ratio of P. rigida and P. koraiensis leaf litter was 529.8 and 236.5, respectively, and then decreased to 384.1, 205.2, respectively, after 21 months. The contents of N, P, K, Ca, and Mg were 6.78, 0.83, 2.84, 0.99, and 2.59 mg/g, respectively, in the P. rigida leaf litter and 10.90, 1.87, 5.82, 4.79, and 2.00 mg/g, respectively, in the P. koraiensis leaf litter, indicating that the elements except the magnesium showed higher contents in P. koraiensis. After 21 months elapsed, remaining N, P, K, Ca, and Mg was 88.4, 77.6, 26.7, 50.5 and 44.5%, respectively, in decomposing P. rigida, and 114.4, 61.3, 7.6, 115.2 and 72.0%, respectively, decomposing P. koraiensis leaf litter.

키워드

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