한국농림기상학회지, 제 10권 제1호(2008) (pISSN 1229-5671, eISSN 2288-1859)
Korean Journal of Agricultural and Forest Meteorology, Vol. 10, No. 1, (2008), pp. 9~16
DOI: 10.5532/KJAFM.2008.10.1.009
ⓒ Author(s) 2014. CC Attribution 3.0 License.


입지유형별 미기후가 천연 활엽수림의 임목 생장에 미치는 영향

신만용(1), 정상영(1), 한원성(1), 이돈구(2)
(1)국민대학교 산림자원학과, (2)서울대학교 산림과학부

(2008년 02월 13일 접수; 2008년 03월 20일 수락)

Effects of Microclimate of Different Site Types on Tree Growth
in Natural Deciduous Forest

Man Yong Shin(1), Sang-Young Chung(1), Won Sung Han(1), Don Koo Lee(2)
(1)Department of Forest Resources, Kookmin University, Seoul 136-702, Korea
(2)Department of Forest Resources, Seoul National University, Seoul 151-921, Korea

(Received February 13, 2008; Accepted March 20, 2008)

ABSTRACT
In this study we investigated the effects of the microclimatic conditions on tree growth in different site types for natural deciduous forests in Korea. First, we classified all the sites into 36 types according to their aspect (east, west, south, and north), elevation (higher than 1,000 m, 700~1,000 m, and lower than 700 m), and topographical conditions (ridge, slope, and valley). For each site type, we measured diameter growth with increment borer, and then estimated periodic annual increment of diameter, height and volume. We applied a topoclimatological technique for estimating microclimatic conditions, and produced monthly climatic estimates from which 17 weather variables (including indices of warmth, coldness, and aridity) were computed for each site type. The periodic annual increments of diameter, height, and volume were then correlated by regression analysis with those weather variables to examine effects of microclimate on tree growth by site type. We found that the correlation of diameter growth by site type was significantly correlated with most weather variables except daily photoperiod. Water condition was the most important factor for the height growth. For volume growth, on the other hand, the conditions such as relatively high temperature and low humidity provided favorable environment. Our regression analysis shows that aridity index is a good predictor for tree growth including diameter, height and volume increments.

Keyword: Periodic annual increment, Microclimatic condition, Site type, Natural deciduous forest, Topoclimatological technique

MAIN

적요

입지유형별 미기후 특성이 임목생장에 미치는 영향을 구명하고자 연구 대상지의 입지유형을 사면방향, 해발고, 그리고 지형특성 등의 총 36가지 유형으로 구분한 후, 각 입지유형별 평년 기후값을 지형기후학적 방법으로 추정한 후, 평년 기후값으로부터 임목생장에 영향을 미칠 것으로 판단되는 17개 기후변수를 입지유형별로 도출하였다. 한편 입지유형별 직경생장, 수고생장, 재적생장에 대한 정보를 얻기 위해 임분조사를 실시했으며, 직경생장량, 수고생장량, 재적생장량의 추정에 적합한 회귀추정식을 17개 기후변수를 사용하여 개발하였다. 입지유형별 직경생장량은 건조지수에 의하여 최적으로 추정할 수 있었다. 건조지수는 총강수량에 대한 연 평균기온의 비에 의하여 계산되기 때문에 강수량이 많아 수분조건이 양호한 입지조건에서 직경생장이 우수한 것으로 나타났다. 한편, 수고생장량은 건조지수와 월 평균 일조시수의 두 기후변수의 조합에 의해 잘 추정되는 것으로 나타났으며, 재적생장량 추정식에 포함된 기후변수는 건조지수와 월 평균 상대습도로 밝혀졌다. 결과적으로 입지유형별 직경생장, 수고생장, 그리고 재적생장을 추정하기 위해 사용한 17개 기후변수 중에서 공통적으로 건조지수가 포함되어 입지유형별 임목생장에는 수분조건이 큰 영향을 미치는 것으로 평가된다.

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