한국농림기상학회지 (Korean Journal of Agricultural and Forest Meteorology)

  • 제5권2호
  • /
  • Pages.87-93
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  • 2003
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  • 1229-5671(pISSN)
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  • 2288-1859(eISSN)
한국농림기상학회 (Korean Society of Agricultural and Forest Meteorology)
권호 표지

광릉 천연활엽수림의 낙엽낙지와 낙엽분해에 따른 양분동태

Nutrient Dynamics in Litterfall and Decomposing Leaf Litter at the Kwangneung Deciduous Broad-Leaved Natural Forest

  • Choonsig Kim (Department of Forest Resources, Jinju National University) ;
  • Jong-Hwan Lim (Department of Forest Environment, Korea Forest Research Institute) ;
  • Joon Hwan Shin (Department of Forest Environment, Korea Forest Research Institute)
  • 발행 : 2003.06.01
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초록

산림생태계에서 낙엽낙지의 유입과 유입된 낙엽낙지의 분해는 산림의 주요한 탄소 및 양분의 공급원이다. 본 연구는 온대중부지역에 속하는 경기도 광릉의 천연 활엽수림에 위치한 DK-site를 대상으로 2년 동안 연 낙엽낙지 유입량과 낙엽분해율을 측정하였다. 낙엽낙지량은 원형의 낙엽수집기(수집면적 0.25$m^2$)를 낙엽분해 율은 10${\times}$30 cm 크기의 낙엽분해주머니(메쉬 1.5 mm)를 이용하였다. 광릉 장기생태연구조사구의 연 낙엽낙지량은 5,627 kg/ha/yr로 이중 순수한 엽량은 총 낙엽낙지량의 61%를 차지하였다. 수종별 유입량은 본 조사구의 우점종인 졸참나무 잎이 가장 많은 양을 보였으며 서어나무, 까치박달 순이었다. 낙엽분해율은 서어나무, 까치박달 낙엽이 졸참나무 낙엽에 비해 분해속도가 빨라 2년의 조사기간 동안 까치박달 낙엽 84%, 서어나무 낙엽 77%, 졸참나무 낙엽 48%가 분해되었다. 졸참나무 낙엽의 분해가 느리게 진행된 것은 타수종의 낙엽에 비해 졸참나무 낙엽내 낮은 양분함량 같은 기질의 차가 원인인 것으로 나타났다. 칼륨을 제외한 양분(N, P, Mg)함량은 분해 초기함량에 비해 낙엽분해과정동안 증가하였다. 또한 낙엽분해과정동안 양분(N, P, K, Ca, Mg)의 방출량은 까치박달과 서어나무낙엽이 졸참나무낙엽에 비해 신속한 것으로 나타났다. 본 연구결과에 따르면 광릉장기생태연구 조사구내 우점종의 낙엽분해와 양분의 동태는 동일한 입지에 있어서도 수종간에 상당한 차이를 나타내었다.

Litterfall and litter decomposition represent a major contribution to the carbon and nutrient inputs in a forest ecosystem. We measured litterfall quantity and nutrient dynamics in decomposing litter for two years at the Kwangneung broadleaf natural forest (DK site) in Korea. Litterfall was collected in circular littertraps (collecting area : 0.25 $m^2$) and mass loss rates and nutrient release patterns in decomposing litter were estimated using the litterbag technique employing 30 cm ${\times}$ 30 cm nylon bags with 1.5 mm mesh size. Total annual litterfall was 5,627 kg/ha/yr and leaf litter accounted for 61 % of the litterfall. The leaf litter quantity was highest in Quercus serrata, fallowed by Carpinus laxiflora and C. cordata, etc., which are dominant tree species in the site. Mass loss from decomposing leaf litter was more rapid in C. laxiflora and C. cordata than in Q. serrata litter. About 77% of C. laxiflora and 84% of C. cordata litter disappeared, while about 48% in Q. serrata litter lost over two years. Lower mass loss rates of Q. serrata litter may be attributed to the difference of substrate quality such as lower nutrient concentrations compared with the other litter types. Nutrient concentrations (N, P, Mg) of three litter types except for potassium (K) increased compared with initial nutrient concentrations of litter over the study period. Compared with Q. serrata litter, nutrients (N, P, K, Ca, Mg) in C. laxiflora and C. cordata litter were released rapidly. The results suggest that litter mass loss and nutrient dynamic processes among tree species vary considerably in the same site conditions.

키워드

참고문헌

  1. Berg, B., 1988: Dynamics of nitrogen $^{15}N$) in decomposing Scots pine (Pinus sylvestris) needle litter. Long-term decomposition in a Scots pine forest VI. Can. J. Bot., 66, 1539-1546.
  2. Bockheim, J. G. and E. A. Jepsen, 1991: Nutrient dynamics in decomposing leaf litter of four tree species on a sandy soil in northwestern Wisconsin. Can. J. For. Res., 21, 803-812.
  3. Blair, J. M., 1988: Nitrogen, sulfur, and phosphorus dynamics in decomposing deciduous leaf litter in the southern Appalachians. Soil Biol. Biochem., 20, 693-701.
  4. Blair, J. M., 1988: Nitrogen, sulfur, and phosphorus dynamics in decomposing deciduous leaf litter in the southern Appalachians. Soil Biol. Biochem., 20, 693-701.
  5. Bray, J. R. and E. Gorham, 1964: Litter production in forests of the world. Adv. Ecol. Res., 2, 101-157.
  6. Hughes, J. W., T. J. Fahey and B. Browne, 1987: A better seed and litter trap. Can. J. For. Res., 17, 1623-1624.
  7. Kim, C., T. L. Sharik and M. F. Jurgensen, 1996: Canopy cover effects on mass loss, and nitrogen and phosphorus dynamics from decomposing litter in oak and pine stands in northern Lower Michigan. For. Ecol. Manage., 80, 13-20.
  8. Kim, C., K-S. Koo, Y-K. Kim, W-K. Lee, J-H. Jeong and H-S. Seo, 1997: Dynamics of litterfall and nutrient inputs in Quercus acutissima and Pinus koraiensis stands. FRI. J. For. Sci., 55, 13-18.
  9. Kim, J., W. Kim, C. H. Cho, B. C. Choi, H. S. Chung, B. L. Lee, K. H. Kim, K. R. Kim, M. Y. Kim, B. Y. Lee, D. Lee, G. W. Lee, J. T. Lee, J.-H. Lim, J. H. Oh, E. W. Park, J. S. Shim, J. I. Yun and C. S. Rho, 2002: KoFlux: a new tool to study the biosphere-atmosphere interactions in Asia. pp. 215-229. In “"Ecology of Korea”" D. Lee, V. Jin, J. C. Choi, Y. Son, S. Yoo, H. Y. Lee, S. K. Hong and B. S. Ihm (eds.), Bumwoo Publ., Seoul. 406pp.
  10. Lim, J.-H., J. H. Shin and J. S. Oh, 2002: Ecological site characteristics and carbon pools of the Kwangnung deciduous old growth natural forest, Korea. Proceedings of the 2nd International Workshop on Advanced Flux Network and Flux Evaluation, 57p. Seogwipo, Korea.
  11. Lisanework, N. and A. Michelsen, 1994: Litterfall and nutrient release by decomposition in three plantations compared with a natural forest in the Ethiopian highland. For. Ecol. and Manage., 65, 1489-164.
  12. National Institute of Agricultural Science and Technology. 1988. Methods of Soil Chemical Analysis. Sammi Press, Suwon, Korea. 450pp.
  13. Oh, J. S., J. H. Shin and J.-H. Lim, 2000: Long-term ecological research programme in Forestry Research Institute, Korea. The Korean Journal of Ecology., 23(2), 131-134.
  14. Polglase, P. J., E. J. Jokela and N. B. Comerford, 1992: Nitrogen and phosphorus release from decomposing needles of southern pine plantations. Soil Sci. Soc. Am. J., 56, 914-920.
  15. van Vuuren, M. M. I. and van der Eerden, L. J., 1992:Effects of three rates of atmospheric nitrogen deposition enriched with $^{15}N$on litter decomposition in a heathland. Soil Biol. Biochem., 24, 527-532.
  16. You, Y-H., J. Namgung, Y-Y. Lee, J-H. Kim, J-Y. Lee and H-T. Mun, 2000: Mass loss and nutrients dynamics during the litter decomposition in Kwangnung experimental forest. Jour. Kor. For. Soc., 89, 41-48.