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환경오염에 의한 위산지역의 삼림생태학적 변화에 관한 연구
김태욱,박인협,이경재 ( Tae Wook Kim,In Hyeop Park,Kyong Jae Lee ) 한국산림과학회 1982 한국산림과학회지 Vol.58 No.1
According to the distance from the industrial complex 5 sample plots were selected to study the changes of vegetational composition of the forest community caused by air pollution in Ulsan. Then 5 subplots were set within a plot. We considered that this gradient analysis by distance could be coincided with the gradual transition of plant succession. Number of species, number of individuals, species diversity, evenness increased and similarity index decreased with increasing distance from the industrial complex. Robinia pseudoacacia, Smilax china appeared to be tolerant to air pollution whereas Quercus variabilis, Q-aliena, Q. dentata and Albizzia julibrissin to be sensitive.
남산자연공원의 식물군집구조 (植物群集構造) 및 8년간 식생변화분석
이경재,박인협,오구균 ( Kyong Jae Lee,In Hyeop Park,Koo Kyoon Oh ) 한국산림과학회 1987 한국산림과학회지 Vol.76 No.3
To investigate and analyze the vegetational structure, thirty sites were sampled with clumped sampling method and seventeen belt transects were sampled to analyze the vegetational change during 8 years(from 1978 to 1986)at the Namsan Nature Park in Seoul. Robinia pseudoacacia community of actual vegetation covered 29.39% Quercus mongolica community 21.25% and Pinus densiflora community 17.58% of the Mt. Namsan forest. The degree of human disturbance of vegetation of 8, 7 and 6 area covered 43.2%, 7.8% and 30.8% respectively. The Quercus mongolica community at the northern slope and R. pseudoacacia communitu at the edge zone will keep their present structure. And P. densiflora community at the eastern and southern slope shall be succeeded to deciduous trees such as Q. mongolica. As to changes of plant community structure during 8 years, density of understory species, species diversity and Raunkiaer`s frequency class A and E showed an increase and vegetation structure was developed to unification.
임경빈,박인협,이경재 ( Kyong Bin Yim,In Hyeop Park,Kyong Jae Lee ) 한국산림과학회 1980 한국산림과학회지 Vol.50 No.1
To study the changes of vegetational composition of each plant successional stage of Pinus densiflora forest caused by pine gall midge damage, Thecodiplosis japonensis, located in Kyonggi-do area, the middle part of Korea, four districts, Anseong, Yongin, Gwangju, and Gapyeong, were selected according to the length of insect damage duration. The forest in the Anseong district was the noninfested one selected as the check. And forests in Yongin, Gwangju, and Gapyeong were the recent]y damaged, severely damaged, and damage prolonged ones in sequence. It was considered that this order could be in concord with the gradual transition of plant successional stage. In view of temperature, precipitation and soil factors, these four districts were sited within the same environment. Four survey plots were selected from each district and the distance between them was 3∼4 ㎞. Then again four subplots were set within a plot. Through needle accumulation after insect infestation, light intensity, soil moisture content, and the amount of soil organic matter were increased and these conditions could create a favorable environment enabling the new species invasion and their growth. These were naturally closely related with the increase in quantity of Pinus densiflora defoliation. After considerable time lapse, the quantities of above mentioned factors decreased with the development of the new substitute tree species. It was found that Quercus mongolica was an excellently substitute tree species come first in this studied area. Species diversity increased to a degree at the early stage of the duration of pine gall midge damage and decreased thereafter. As the same manner, similarity index value between plots in the same district decreased to a degree and increased thereafter. This was linked admittedly with the increase and decrease of tree species and evenness. Synthesizing above mentioned results, the process of plant succession studied quantitatively by changes of relative density and relative importance value, it can be concluded that Pinus densiflora forest gives way to Genus Quercus forest in which Genus Lespedeza and Genus Rhododendron species become as subdominance species after removal of the Pinus densiflora trees damaged by pine gall midge.
김태욱,이경재,박인협 ( Tae Wook Kim,Kyong Jae Lee,In Hyeop Park ) 한국산림과학회 1985 한국산림과학회지 Vol.71 No.1
This study was performed to investigate the damage to the primary production of Pinus thunbergii forest from air pollution around the Yeochon Industrial Estate. The data were observed at 6 sites in the vicinity of the above area. The vitality of pine trees and the accumulation of the soluable sulfur and the fluorine were analyzed. Their value was generally increased near the source of air pollutants. The biomass density and annual net production were 1.01 ㎏/㎥, 5.90 t/㏊/yr in the stand 4 respectively and 0.66 ㎏/㎥ , 0.32t/hr/hr in the stand 3 respectively. The net assimilation rate was 0.4 - 1.6 ㎏/㎏/yr and the efficiency of leaf to produce stem was 0.3 - 1.3 ㎏/㎏/yr. The annual growth percentage of volume was 16.0% at the slightly damaged area and 4.0% at the Beverly damaged area. The maximum mean annual increment per tree was 0.0040㎥ and 0.0008㎥ in same order.
환경오염이 오동나무인공림의 물질생산에 미치는 영향에 관한 연구
김태욱,이경재,박인협 ( Tae Wook Kim,Kyong Jae Lee,In Hyeop Park ) 한국산림과학회 1982 한국산림과학회지 Vol.58 No.1
To study the comparison of aboveground biomass of paulownia coreana Uyeki of 6-year-old, located in Seongju of non-attacked forest and Ulsan of damaged forest by the air pollution were selected. Ten sample trees in Seongju district and seven trees in Ulsan selected taking account of DBH were measured for 16 trees in total within a 10 ×10m experimental plot. The diagram of oven-dry weight distribution of stem, branch and needle for each 1m segment was constructed. The logarithmic regression equations between dry weight of each component and the two-variables, DBH and tree height, combined term were presented. IF the estimations are extended to a hectare area stand, it contains 47.49 tons of aboveground biomass in Seongju district and 2.56 tons of it in Ulsan. The net assimilation was 4.73kg/kg/yr in Seongju and 2.29kg/kg/yr in Ulsan and the efficiency of leaf to produce stem was 2.99kg/kg/yr in Seongju and 0.83kg/kg/yr in Ulsan
솔잎혹파리 피해적송림의 (被害赤松林) 생태학적 연구 (Ⅱ)
임경빈,이경재,박인협 ( Kyong Bin Yim,Kyong Jae Lee,In Hyeop Park ) 한국산림과학회 1981 한국산림과학회지 Vol.54 No.1
In order to elucidate the process of plant succession of the Japanese red pine forests caused by pine gall midge, Thecodoplosis japonensis, in the area of Chungbuk and Kyongbuk, 12 study polts, 4 plots from each three districts, were set up. Districts A (Cheongwon)not attacked by this insect, as the check, District B(Gumi) in which the insect outbreak occured 5 years ago, and District C(Yeongdond)in which the insect outbreak occured 10 years ago, were sampled. The surveyed were some environmental factors, the number of woody plants, relative density, relative dominance values, species composition of plots by layer(upper, middle and ground), importance values, species diversity, similarity and dissimilarity index, etc. The results obtained are summarized as follows: The accumulation of litter on the ground was increased with the lengthening the insect damage duration. Through the crown opening and litter accumulation, the light intensity, temperature condition and soil moisture and mutrient content might be altered. According to the changes of species composition were forced. In general, the Genus Quercus, as a compensation species, has sprung up. The relative improtance values for Q.aliena, Q.serrata, and Q.variabilis were significantly increased in the insect infested forests. 2. the stand structure and species composition of the insect attacked forest about 5 years later after the outbreak become complex and diverse. However, since this time, the simplicity of these regards become restored up to 10 years after the outbreak. 3. As the synthetic analysis of plant succession process, the relative values calculated from the relative density and the relative dominance values shown the dominant status of Genus Quercus in the heavily damaged forests. In addition, Genus Rhododendron and Genus Lespedeza with higher frequency become the ground vegetation components. They were gradually increased along the time elapsing after the insect out-break 4. The differences in connection with the soil moisture contents, the organic matter contents which might give some influences to the vegetation change were hardly recognizable statistically among the studied plots by three district groups. We estimated that the annual mean precipitation and the annual mean temperature did not operated any meaningful effects on the vegetation alteration among plots between districts.