갯벌생태계 생물자원의 보존

문형태 公州大學校 地域開發硏究所 1999 地域開發硏究論叢 Vol.7 No.1

치화화사막에서 뿌리의 분해과정에 따른 질소함량의 변화

문형태,W.G.Whitford 한국생태학회 1994 Journal of Ecology and Environment Vol.17 No.3

치화화 사막에서 몇 가지 식물 뿌리의 분해율과 분해 과정에 따른 질소함량의 변화를 조사하였다 (1986년 10월 ~ 1990년 4월). 뿌리의 분해는 리그닌 함량과 역상관 관계를 보였다(r=-0.84, n=5, p<0.05). 1년생 광엽초본인 Baileya multiradiata의 분해율이 가장 높았고 다년생 협엽 초본인 Panicum obtusum의 분해율이 가장 낮았다. 지역에 따른 분해율은 playa에서 가장 낮았다. Baileya multiradiata를 제외하고 모두 분해 초기에 질소의 무기화가 있은 다음 질소의 부동화가 나타났다. Baileya multirdiata의 뿌리는 분해 초기부터 질소함량이 계속 증가하는 것으로 나타났다. 다년생 협엽초본 뿌리의 리그닌 함량은 광엽초본 뿌리의 리그닌 함량보다 높았다. We examined spatial and temporal patterns of root decomposition for three and half years, from October 1986 to April 1990, in semi-arid Chihuahuan Desert. Decomposition of roots occurred in a two-phased pattern: an early period of rapid mass loss followed by a period of slower loss. The rate of root decomposition had a high negative correlation with the initial lignin concentration in roots (r=-0.84, p<0.05). Annual mass loss rate of Baileya multiradiata, a herbaceous annual, was the highest with the value of 0.60, while that of Panicum obtusum. a perennial grass which was restricted to playa, was the lowest with 0.13. The mass loss rate of roots in the playa was the lowest among the vegetation zones along the transect. After 42 months elapsed, fluffgrass roots in playa lost 40% of the initial mass, while in other sites it lost on average 55% of the initial mass. In all roots except for desert marigold, there was an initial release of nitrogen early in decomposition followed by net nitrogen immobilization. Nitrogen concentration of the desert marigold roots showed linear increase from the beginning. Lignin concentration of perennial grass roots were higher than those of herbaceous annual and woody perennial root.

Biomass Estimation of Shrub Lindera obtusiloba by Allometry

문형태 한국생태학회 2006 Journal of Ecology and Environment Vol.29 No.5

Alometric equations for biomass measurement of the shrub species, Lindera obtusiloba, weredeveloped. The alometric equations between (BD)2H and dry weight of leaves (Wl), stems and branches (Wsb), rots (Wr) and total weight (Wt) of the Lindera obtusiloba were as follows: Wl=0.7318 (BD2H)0.6108, Wsb=0.6067 (BD2H)0.8355, Wr=0.4524 (BD2H)0.7608, Wt=1.672 (BD2H)0.7664. The R2s between (BD)2H and Wl, Wsb, Wr and Wt of the Lindera obtusiloba were 0.9251, 0.9571, 0.9353 and 0.9546, respectively. Root weight of this Lindera obtusiloba was about 38% of the aboveground biomass.

민자주방망이버섯의 분해와 분해과정에 따른 영양염류의 변화

문형태,남궁정,이윤영,이종영,김정희 한국생태학회 2000 Journal of Ecology and Environment Vol.23 No.1

Mass loss and changes of mineral nutrients during decomposition of Lepista nuda for 7 weeks from October 7 to December 28 in 1998 were investigated in an oak stand in Kongju, Korea. Content of nitrogen, phosphorus, potassium, calcium and magnesium of the fresh L. nuda was 67.8, 4.1, 47.3, 0.4 and 1.5 ㎎/g, respectively. Content of nitrogen, phosphorus and potassium in L. nuda were much higher than those in leaf litter. After 7 weeks, remaining mass was 35%. Nitrogen, phos- phorus and potassium increased till 5 weeks and then decreased rapidly, however, calcium and magnesium steadily increased during the experimental period. Nitrogen and phosphorus showed a short period of immobilization, and calcium showed no immobilization period during decomposition. After 7 weeks, remaining N, P, K, Ca and Mg was 26.6, 37.5, 28.5, 35.0 and 91.0% of the initial content, respectively. Nutrients could be relocated spatially during the formation and decomposition of fruiting body of Basidiomycetes. 1998년 11월부터 12월 말까지 참나무림에서 민자주방망이버섯의 분해와 분해과정에 따른 영양 염류의 변화를 조사하였다. 자주방망이버섯 속의 민자주방망이버섯은 낙엽분해성 균류로 균륜을 형성하며, 가을부터 초겨울에 걸쳐 활엽수림에 단생 혹은 군생한다. 갓의 지름은 4∼12 cm로 연한 자주색이지만 시간이 지남에 따라 퇴색한다. 7주 동안의 분해과정에서 잔존량은 초기 무게의 35%이었다. 질소, 인, 칼릅, 칼슘, 마그네슘의 초기 함량은 각각 67.8 ㎎/g, 4.1 ㎎/g, 47.3 ㎎/g, 0.4 ㎎/g, 1.5 ㎎/g으로 특히 질소와 인 그리고 칼륨은 초본식물에 비해 현저히 높았다. 질소, 인, 칼륨, 칼슘 그리고 마그네슘의 잔존률은 각각 초기 값의 26.6%, 37.5%, 28.5%, 35.0%그리고 91.0%이었다. 버섯은 토양과 낙엽층 속에 널리 퍼진 균사를 통해 영양염류를 흡수하여 자실체에 집중시키고 이 자실체가 단기간에 분해되기 때문에 영양염류의 순환을 빠르게 하며, 이 과정에서 영양염류 재분배가 일어날 수 있다.

학술발표회 : 6 ) 자원분야 : 구두발표 ; 염색 표지 방류 방법을 이용한 제주 천제연 하구 실뱀장어 자원량 추정

문형태,이태원,황선도 한국국제경제학회 2001 춘계 수산관련학회 공동학술대회발표 요지집 Vol.0 No.-

상수리나무 뿌리 분해 및 분해과정에 따른 영양염류 변화

문형태 한국생태학회 2004 Journal of Ecology and Environment Vol.27 No.3

Weight loss and nutrients dynamics during decomposition of oak roots (diameter classes:R1<0.2cm, 0.5cm<R2<1cm, 1cm<R3<2cm, 2cm<R4<4cm) (Quercus acutissima) were studied for 33-months in Kongju, Korea. After 33-months, decomposition rate of R1, R2, R3 and R4 was 49.6%, 47.5%, 66.4% and 66.1%, respectively. The decomposition constant(k) for R1, R2, R3, and R4 was 0.249/yr, 0.234/yr, 0.397/yr and 0.393/yr, respectively. Larger diameter class of the root lost more weight than smaller diameter class. N concentration in decomposing oak roots increased in all diameter classes. After 33-months, remaining N in R1, R2, R3 and R4 was 66.5%, 86.7%, 84.4% and 44.4%, respectively. P concentration in decomposing oak roots decreased in early part of decomposition and then increased in later stage of decomposition. After 33-months, remaining P in R1, R2, R3 and R4 was 64.7%, 62.4%, 93.1% and 30.7%, respectively. K concentration in decomposing oak roots decreased rapidly in early stage of decomposition. Remaining K in R1, R2, R3 and R4 was 11.6%, 10.6%, 5.9% and 7.7%, respectively. Ca concentration in decomposing oak roots showed different among diameter classes. After 33-months, remaining Ca in R1, R2, R3 and R4 was 66.2%, 51.0%, 39.1% and 48.3%, respectively. Initial concentration of Mg in oak root was higher in smaller diameter class. After 33-months, remaining Mg in R1, R2, R3 and R4 was 15.3%, 29.9%, 24.6% and 69.4%, respectively. 상수리나무 뿌리의 분해율과 분해과정에 따른 영양염류의 변화를 조사하였다. 33개월 경과 후 뿌리의 분해율은 직경 0.2cm 미만(R1), 0.5~1cm(R2), 1~2cm(R3), 2~4cm(R4)가 각각 49.6%, 47.5%, 66.4%, 66.1%, 분해상 수 k는 각각 0.249/yr, 0.234/yr, 0.397/yr, 0.393/yr로 직경이 큰 것의 분해율이 높았다. 상수리나무 뿌리는 유사한 직경의 상수리나무 가지에 비해 분해가 빠른 것으로 나타났다. 분해 과정에 따른 뿌리의 질소 함량은 모든 직경급에서 증가하는 경향을 보였다. 33개월 경과 후 뿌리의 질소 잔존률은 R1, R2, R3 그리고 R4가 각각 66.5%, 86.7%, 84.4%, 44.4%이었다. 분해중인 뿌리의 인 함량은 분해 초기에 감소하다 후반부에는 증가하는 경향을 보였으며, 33개월 후 인의 잔존률은 R1, R2, R3 그리고 R4가 각각 64.7%, 62.4%, 93.1%, 30.7%이었다. 분해중인 뿌리의 칼륨 함량은 분해가 진행됨에 따라 초기 값보다 현저하게 감소하였으며, 33개월 경과 후 칼륨의 잔존률은 R1, R2, R3 그리고 R4에서 각각 11.6%, 10.6%, 5.9%, 7.7%이었다. 분해과정 중 칼슘 함량의 변화는 직경급에 따라 달랐으며, 33개월 경과 후 칼슘의 잔존률은 R1, R2, R3 그리고 R4에서 각각 66.2%, 51.0%,39.1%, 48.3%이었다. 뿌리의 마그네슘 함량은 직경이 작을수록 초기 함량이 높았으며, 분해가 진행됨에 따라 R4에서는 초기값에 비해 함량이 증가하였으나 R1, R2, R3에서는 초기값보다 감소하였다. 33개월 경과 후 마그네슘 잔존률은 R1, R2, R3 그리고 R4에서 각각 15.3%, 29.9%, 24.6%, 69.4%로 칼슘과는 달리 직경이 큰 뿌리에서 잔존률이 높았다.

Weight Loss and Nutrient Dynamics during Leaf Litter Decomposition of Quercus mongolica in Mt. Worak National Park

문형태 한국생태학회 2009 Journal of Ecology and Environment Vol.32 No.2

Weight loss and nutrient dynamics of Quercus mongolica leaf litter during decomposition were investigated from December 2005 through August 2008 in Mt. Worak National Park as a part of National Long-Term Ecological Research Program in Korea. The decay constant (k) of Q. mongolica litter was 0.26. After 33 months decomposition, remaining weight of Q. mongolica litter was 49.3 ± 4.4%. Initial C/N and C/P ratios of Q. mongolica litter were 43.3 and 2,032, respectively. C/N ratio in decomposing litter decreased rapidly from the beginning to nine months decomposition, and then showed more or less constant. C/P ratio increased to 2,407 after three months decomposition, and then decreased steadily thereafter. N and P concentration increased significantly during decomposition. N immobilization occurred from the beginning through 18 months decomposition, and mineralization occurred afterwards in decomposing litter. P immobilized significantly from fifteen months during decomposition. K concentration decreased rapidly from the beginning to six months decomposition. However it showed an increasing pattern during later stage of decomposition. Remaining K decreased rapidly during early stage of decomposition. There was no net K immobilization. Ca concentration increased from the beginning to twelve months decomposition, and then decreased rapidly till twenty one months elapsed. However, it increased again thereafter. Ca mineralization occurred from fifteen months. Mg concentration increased during decomposition. There was no Mg immobilization during litter decomposition. After 33 months decomposition, remaining N, P, K, Ca and Mg in Q. mongolica litter were 79.2, 110.9, 36.2, 52.7 and 74.4%, respectively. Weight loss and nutrient dynamics of Quercus mongolica leaf litter during decomposition were investigated from December 2005 through August 2008 in Mt. Worak National Park as a part of National Long-Term Ecological Research Program in Korea. The decay constant (k) of Q. mongolica litter was 0.26. After 33 months decomposition, remaining weight of Q. mongolica litter was 49.3 ± 4.4%. Initial C/N and C/P ratios of Q. mongolica litter were 43.3 and 2,032, respectively. C/N ratio in decomposing litter decreased rapidly from the beginning to nine months decomposition, and then showed more or less constant. C/P ratio increased to 2,407 after three months decomposition, and then decreased steadily thereafter. N and P concentration increased significantly during decomposition. N immobilization occurred from the beginning through 18 months decomposition, and mineralization occurred afterwards in decomposing litter. P immobilized significantly from fifteen months during decomposition. K concentration decreased rapidly from the beginning to six months decomposition. However it showed an increasing pattern during later stage of decomposition. Remaining K decreased rapidly during early stage of decomposition. There was no net K immobilization. Ca concentration increased from the beginning to twelve months decomposition, and then decreased rapidly till twenty one months elapsed. However, it increased again thereafter. Ca mineralization occurred from fifteen months. Mg concentration increased during decomposition. There was no Mg immobilization during litter decomposition. After 33 months decomposition, remaining N, P, K, Ca and Mg in Q. mongolica litter were 79.2, 110.9, 36.2, 52.7 and 74.4%, respectively.

상수리나무 가지의 분해 및 분해과정에 따른 영양염류 변화

문형태 한국생태학회 2004 Journal of Ecology and Environment Vol.27 No.2

Decay rate and nutrient dynamics during decomposition of oak (Quercus acutissima) branches were investigated for 33-months in Kongju, Korea. After 33-months, remaining weight of B1, B2 and B3 was 44.5%, 58.5% and 55.37%, respectively. Decomposition constant (k) for B1, B2 and B3 was 0.294/yr, 0.195/yr, 0.215/yr, respectively. N concentration in decomposing oak branches increased in all diameter classes. After 33-months, remaining N in B1, B2 and B3 was 101.2%, 91.9%, 104.4%, respectively. P concentration in decomposing oak branches increased in B1 and B2, and there was no immobilization period. After 33-months, remaining P in B1, B2 and B3 was 57.2%, 74.4%, 53.9%, respectively. K concentration in decomposing oak branches decreased significantly. Remaining K in B1, B2 and B3 was 7.7%, 17.1% and 17.2%, respectively, which was significantly lower than other nutrients. Ca concentration in decomposing oak branches increased in B2 and B3. After 33-months, remaining Ca in B1, B2 and B3 was 58.5%, 47.8% and 75.2%, respectively. Initial concentration of Mg in oak branch was higher in smaller diameter class. After 33-months, remaining Mg in B1, B2 and B3 was 44.3%, 57.9% and 47.7%, respectively. 상수리나무 가지의 분해율과 분해과정에 따른 영양염류의 변화를 33개월 동안 조사하였다. 33개월 경과 후 가지의 잔존률은 B1(직경<1㎝), B2(1cm≤직경<2㎝), B3(3cm≤직경<4㎝)가 각각 44.5%, 58.5%, 55.3% 이었다. B1, B2, B3의 분해 상수는 각각 0.294/yr, 0.195 /yr, 0.215/yr이었다. 분해 과정에 따른 질소 함량은 모든 직경급에서 증가하는 경향을 보였다. 33개월 경과 후 질소 잔존률은 B1, B2, B3가 각각 101.2%, 91.9%, 104.4%이었다. 인 함량은 B1과 B2에서 분해가 진행됨에 따라 초기 함량보다 증가하였고, 분해 과정중 인의 부동화 기간은 없었으며, 33개월 경과 후 인 잔존률은 B1, B2, B3가 각각 57.2%, 74.4%, 53.9%이었다. 칼륨 함량은 분해가 진행됨에 따라 초기 값보다 현저하게 감소하였으며, 33 개월 경과 후 잔존률은 B1, B2, B3가 각각 7.7%,17.1%, 17.2%로 다른 영양염류에 비해 낮았다. 칼슘 함량은 B1을 제외하고 분해 기간동안 그 값이 증가하였으며, 33개월 경과 후 잔존률은 B1, B2, B3가 각각 58.5%, 47.8%, 75.2%이었다. 마그네슘은 가지의 직경이 작을수록 초기 함량이 높았으며, 33 개월 경과 후 잔존률은 B1, B2, B3에서 각각 44.3%, 57.9%, 47.7%이었다.

여천공단 주변지역 토양의 화학적 성질

문형태,표재훈,김준호 한국생태학회 1998 Journal of Ecology and Environment Vol.21 No.1

Effects of air pollutants on the chemical properties of soil in Yoch'on inductrial complex were investigated. Soil pH showed severe acidity with average value of 4.3$\pm$0.13. Soil pH decreaed along the increase in altitute of Mt. Jeseok. Soil organic matter and total N was 19.2$\pm$3.6% and 4.7$\pm$0.25mg/g, respectively, which were higher than those of unpolluted area, Kongju. Available P was 41.2$\pm$3.7 $\mu$g/g, which was 4 times greater than that of unpolluted area, Kongju. Average content of total-S was 283.5$\pm$14.1 $\mu$g/g, which was 10 times greater than that of unpolluted area. Content of available Al was o.43$\pm$0.03 mg/g, which was 2 times greater than that of unpolluted area. Available Al increased as the soil pH decrease. Contents of exchangeable K, Ca and Mg were significantly lower than those in unpolluted area, because of severe leaching in acid soil.

산불이 곰솔림 산화지의 하층식생 구성과 쌀새(Melica onoei Fr.)의 종자발아에 미치는 영향

문형태 한국생태학회 2001 Journal of Ecology and Environment Vol.24 No.3