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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
The Korean Journal of Ecology
Journal Basic Information
Journal DOI :
The Ecological Society of Korea
Editor in Chief :
Volume & Issues
Volume 15, Issue 4 - Aug 1992
Volume 15, Issue 3 - Jun 1992
Volume 15, Issue 2 - Apr 1992
Volume 15, Issue 1 - Feb 1992
Selecting the target year
A study on distribution of plant communities around chunji in a crater on mt. paektu
Chang, Nam-Kee ; Yeau, Sung-Hee ; Lee, Sun-Kyung ;
The Korean Journal of Ecology, volume 15, issue 3, 1992, Pages 209~220
We investigated major plant communities and seed dispersal patterns in areas a(alt. 2,263 ~2,350m),b(alt. 2,350~2,420m), c(alt. 2,420m) with levels of a crater on mt. paektu. Thirty two species distributed around chunji consisted of 24 perennial herbs, 1 biennial herb and 7 alpine dwarf shurbs. Their fruit types were quite diverse; capsule(11), achene(10), grain(4), legume(2), follicle(2), schizocarp(2) and drupe(1). in area a, adjancent to the chunji(lake) water surface, gramineae sp., cyperaceae sp., chrysanthemum zawadskii and bistorta ochotensis were occured as members of the major plant communities. Species of gramineae and cyperaceae seem to have become dominant because their seeds float well. Astragalus membranaceus is legume and endures the winter cold and summer drought. in area c, alpine dwarf shrubs (e. g.rhododendron redowskianum, rhododendron aureum, empetrum nigrum) were dominant. In area c, compared to a and b, the weather is drier because of strong wind and lower water holding capacity of the soil. Therefore the pattern of plants distributing around chunji is different from that in western slope on mt.paektu. environmental factor such as wind, temperature and water may contribute to the pattern.
Influences of liming on life form and ecological behaviour of plant community in low productive grassland
Park, Geun Je ;
The Korean Journal of Ecology, volume 15, issue 3, 1992, Pages 221~229
This experiment was carried out to investigate the effect of liming on life form and ecological behaviour of stand in low productive grassland with acidified solil at dairy fram in yesan, chungnam province. The inferior plant community of low productive grassland was improved to the most desirable pasture association with herbage of 84% by liming. the life forms of association in low productive grassland were composed of hemicryptophytes of 49.4%, therophytes of 48.2%, geophytes of 2.2% and chamaephytes of 0.2% but by liming their life forms of hemicryptophytes increased greatly by 32.6%, on the other hand geophytes were much more decreased by 33.4%. The ecological behaviour of moisture figure and nitrogen figure were slightly increased and soil reaction figure was gradually decreased in low productive grassland by liming.
Study on forest vegetation in the vicinity of onsan industrial complex
Kim, Jong-Gab ;
The Korean Journal of Ecology, volume 15, issue 3, 1992, Pages 231~246
In order to estimate effects of air pollution for pinus thunbergii forests arounding onsan industrial complex, structure of forest vegrtation was surveyed. In the survey of forest vegetation, pinus densiflora have been died or being withered, and importance value(I.V) of rhododendron mucromulatum and lespedeza spp. were low at the vicinity of industrial complex. Especially lespedeza maximowiczii and l. maritima were not entirely appeared at the vicinity of industrial complex. I.V. of quercus serrata, robinia pseudoacacia and alnus firma were preferably high at the vicinity of industrial complex, and those of smilax china, rubus crataegifolius and rhus trichocarpa were similar at every site and it could be guessed that those had a tolerance. Number of species had a difference over 10 species at the vicinity of industrial complex as compared with those of remote sites, and species diversity showed highly at the farther sites of industrial complex, and also at the low layer, number of species, species diversity and evennes were low at the vicinity of industrialcomplex and species weakened to air pollution were disappearing. It was possible that forest vegetation would be changed from pinus spp. to community of a. firma and r. pseudoacacia.
Study on herbs vegetation in the vicinity of onsan industrial complex
Kim, Jong-Gab ;
The Korean Journal of Ecology, volume 15, issue 3, 1992, Pages 247~255
In order to estimate effects of air pollution for herbs in the plnus thunbergii forests arrounding onsan industrial complex, this study was surveyed. number of species of herb also had a difference over 10 species by distance at the source of air pollution, and species diversity and evennes were also increasing at remote sites in industrial complex as woody plants. At the vicinity of industrial complex,
of calamagrostis arundinatios arundinacea., miscanthus sinensis and cymbopogon tortilis var. goeringii were very high, and those of lianas as cocculus trilobus, lonicera japonica and paederia scandens, and phytolacca americana were low, but because of being higher than other sites, it was able to inferred that lianas had a tolerance to air pollution. The composition of biological spectra of herbs showed to type of
at near site in the source of air pollution and
at the other sites, and the propotion of lians forms were relatively high at the vicinity of industril complex.
A study on toxicity of several pesticides on larval development of shrimp cardina denticulata denticulata de haan
Kim, Chang-Hyun ;
The Korean Journal of Ecology, volume 15, issue 3, 1992, Pages 257~265
The effects of insecticide dimilin including the technical grade(tg) and wettable power(wp-25), inhibiting the synthesis of chitin in the cuticle of insect larvae, and herbicides alachlor and atrazine on the development of shrimp caridina denticulata denticulata were investigated in various concentrations. This species is abundant in the freshwater such as river and pond. The shrimp larvae were reared at dimilin solutions(tg and wp 2), alachlor solutions, and atrazin solutions. the concentrations of dimiline were 0, 1, 5, 10 and 25 ppb dimilin solutions, and those of alachlor and atrazin were 0, 1, 5, 10 and 25ppm, respectively.mortality was high at 10 ppb when the larvae were exposed to dimilin and at 25ppm in the case of alachlor and atranzine solutions. If lethal concentration is defined as a concentration in which less than 10% of larvae to the post larval stage from hatching it can be concluded that the lethal concentration of dimilin is 5ppb, and that of alachlor and atrazin is 25 ppm
The effects of heavy metals on microbial biomass and activity in contaminated urban park soils
Kim, Ok-Kyung ; Paul Birch ;
The Korean Journal of Ecology, volume 15, issue 3, 1992, Pages 267~279
The relationship between pb, zn, cd, and the microbial biomass and activity were investigated in three public park soils of central and outer london. Variability with distance from the roadside and profile were studied. The heavey metal concentrations were the highest in hampstead heath and hyde park with high trafic density and the lowest in hainault. The highest concentrations of heavy metals were found adjacent to the roadside in the upper parts of the soil profile. Dehydrogenase activity, adenosine tri-phosphate and ergosterol contents used as indices of micrbial biomass and activity, were generally higher in hainadult, and also higher in the upper pats of the soil profile. Simple regression analysis indicated that the microbial biomass and activity were affected significantly by moisture content, water holding capacity, total organic carbon, total nitrogen, and organic mater rather than heavy metal concentration. Highest inputs of nitrogen and carbon were associated with high inputs of heavey metals, all three being derived from vehicle emissions adjacent to the road. The hyde park and hampstead heath microbial populations were able to respond to the c and n input positively by increase in biomass and activity, whereas the hainault populations could not. This rsult suggrsts adaptation in he former to heavy matals, but not in the latter.
Antifungal activity of some essential oils against four fungi
Yun, Kyeong-Won ; N.K. Dubey ; Han, Dong-Min ; Bong- Seop Kil ;
The Korean Journal of Ecology, volume 15, issue 3, 1992, Pages 281~285
Essential oils isolated from five angiospermic plants viz. citrus medica, trachyspermum amminepeta hindostana, amomum subulatum, and hyptis suaveolens have been tested against four fungiviz. aspergillus awamori, alternaria matini, aspergillus nidulans and penicillium sp. at 100ppm, 500 ppm, and 1, 000ppm. The oils of c. medica, n. hindostana and t. ammi were found to be effective in checking growth of fungi, while the hyptis and amomum oils were observed to be the worst effective. The antifungal poitency of some of the oils has been compared with synthetic fungicides viz. dithane m-45, ceresan and captan.
Determination of self-purification constants and regulation of pollutants loaded in the ecosystems
Chang, Nam-Kee ; Kim, Jae-Young ;
The Korean Journal of Ecology, volume 15, issue 3, 1992, Pages 287~296
To determinate self-purification constants of pollutants loaded in the ecosystems, the self- purification process was formulated, and a measurement method of the self-purification constants was derived.
is the initial pollutant amounts loaded in a ecosystem, and C is the rest pollutant amounts after the time, t, the equation of the self-purification, s, is
When in aquatic ecosystem,
is the initial polluant amounts loaded in water body, and Cis the rest pollutation amounts after the time, t, the self-purification constant, s, is
Self-purification constants of pine and oak forests at kwangneung in kyonggido were 0.07 and 10 respectively, of BOD in gokneung stream in kyonggido was 0.51, and of glucose and phosphate in pools on the stone in mt.jiri were 0.49 and 15.19 respectively.
The effect of dry matter allocation at the early seedling stare on the growth of two grass species
Park, Young-Mok ;
The Korean Journal of Ecology, volume 15, issue 3, 1992, Pages 297~309
The growth of digitaria adscendens and eleusine indica, annual weeds common in japan, was experimentally analyzed under varying untrient conditions. compared with e. indica, d. adscendensshowed a higher the two under high nitrogen availability. Higher net assimilation rate(nar) in d. adscendens than e. india was responsible for high RGR in D. adscendens under the low nitrogen availability. The different of NAR in the two species was induced not by leaf nitrogen content but by nitrogen use efficiency. Under unfertilized conditions nitrogen uptake rate(nur) was greater in d. adscendens than e. indica. Specific absorption rate in two species was similar, but root mass was greater in d. adscendens than e. indica.d. adscendens allocated more dry matter to roots than e. india earlier stage of seedlings. The contributed to higher rot mass and in turn resulted in higher nur in d. adscendens than that in e. india. It is concluuded that the larger allocation of dry matter to roots at early seedling stage in d. adscendens plays an important role in obtaining nitrogen for the continuation of growth under low nitrogen availability.
Classification of calcicoles and calcifuges on the basis of the ratio of soluble to insoluble ca2+ and mg2+ in the leaves
Kim, Joon-Ho ; Kwak, Young-Se ; Mun, Hyung-Tae ;
The Korean Journal of Ecology, volume 15, issue 3, 1992, Pages 311~328
In other to classify calcicoles and calcifuges and calcifuges within plant communities occurring on limestone and granite soils in chungbuk province, korea, soil propertile, constancy for species by prsence or absence, and ratios of soluble to insoluble
were investigated. In the limestone soils ph values and
content, ranging 7.26 ~7.48, 5.32~7.37 mg
and 0.42~0.62 mg
, respectively, were higher than those in the granite soil with ph 5.76, 1.03mg
. species with high constancy in the 5 communities were classified into three groups; species group a(29~36% of total number of species) was composed of species occuring on the granite soil; group c(16~24%) is commonly distributed throughout both soils. Ratios of soluble to insoluble
ranged from 0.1 to 81.3 in the group a, 0.2 to 0.8 in the group b and 0.2 to 8.7 in the group c. species within each group can be divided into two groups based on the values of the ratio, below or above 1.0. consequently, each of the group a and c was classified again into two groups; the group a1 and c1 with the ratio of above 1.0 and the group a2 and c2 withbelow 1.0 but the ratio could not further subdivide the group b. from these results it was proposed that plants of the group a1 were termed as obligate calcicoles, the group b as obligate calcifuges, the group c1 as facultative calcicoles, the group c2 as facultative calcifuges and the group a2 as avoiding calcifuges.