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2006, Vol.15, No.1

  • 1.

    Analysis of soil erodibility potential depending on soil and topographic condition - A Case study of Ibang-myeon, Changnyeong-gun, Kyungsangnam-do, South Korea-

    PARK IN-HWAN | geun sang lee | 장갑수 and 1other persons | 2006, 15(1) | pp.1~12 | number of Cited : 4
    Abstract PDF
    Changes in the soil physical property and the topographic condition derived fromagricultural activities like as farming activities, land clearance and cutting down resulted inenvironmental and economic problems including the outflow of nutrient from farms and thewater pollution. Several theories on the soil conservation have been developed and reviewed toprotect soil erosion in the regions having a high risk of erosion. This study was done using thesteepness made by Desmet and Govers (1996), and Nearing (1997) to evaluate the potential ofthe soil erodibility. Therefore, several results were obtained as follows.First, factors affecting the soil erosion based on the USLE could be extracted to examine theerosion potential in farms. Soil erodibility (K), slope length (L), and slope steepness (S) wereused as main factors in the USLE in consideration of the soil, not by the land use or land cover.Corresponding Author: Jang, Gab-Sue, Dept. of Environmental and Ecological Research, Chungnam Development Institute, 138-42 SangDae-Dong, YuSeong-Gu, DaeJeon 305-313, Korea Tel: 82-42-820-1182 Fax: 82-42-820-1129 E-mail: janggs@cdi.re.kr
  • 2.

    The stream restoration program evaluation issue

    최미희 | 2006, 15(1) | pp.13~22 | number of Cited : 10
    Abstract PDF
    The Korean government adopted the integrated stream water management policy recentlywith growing perception that natural disasters and pollution in Korea have been due not onlyto such human factors as urbanization and industrialization, but also to the policy offunctionally separated management of irrigation, flood control and ecological management.Contrary to its good intention, research result shows that it is not realistic to expect that thisnew integrated policy in Korea will work well.In order to be an effective policy and program evaluation, this paper suggests that evaluationindicator on related programs and projects should be made through bottom-up process. Forexample, environmental benefit should be taken into account rather than just economic benefit,and cultural and social characteristics in the project region should be also considered seriously.
  • 3.

    Comparative Study of Truck Traffic System Management for Reducing Air Pollution Impact - Forcusing on Sihwa National Industrail Complex, Siheung City -

    Woo-Taeg Kwon | Hyung Chul Kim | 이희관 | 2006, 15(1) | pp.23~33 | number of Cited : 0
    Abstract PDF
    The factor of air pollution in a large industrial city is not only manufactories but also,activities related to trucks. Sihwa National Industrial Complex is located in Siheung City; due tothe industries, more diverse activities related to trucks occur in Siheung City than other cities. Inparticular, the new residential area in Siheung City is close to the industrial complex; so, theother areas.The aim of this study is to analyze influence of the air pollution by a truck in Siheung City.ISCST3 Model and Arc View program were used for this study and Siheung City was dividedinto 1,000 meter by 1,000 meter grid to analyze. Furthermore, this study suggested tworeduction controls of air pollution in Siheung City, and analyzed the results from thesereduction managements.The results of the present condition showed that residences located in north of SihwaIndustrial Complex are influenced by air pollution material. Furthermore, air pollution bytrucks has affected on the residents which is near the road in Siheung City. Therefore, this studyYosu 550-749, Korea Tel: 82-41-550-5307 Fax: 82-61-653-2353 E-mail: bh4a@smu.ac.kr
  • 4.

    Development of Fuzzy Method for Judging Lake Eutrophication Grades

    Lee Yong Woon | 권병택 | 2006, 15(1) | pp.35~43 | number of Cited : 0
    Abstract PDF
    which are not only pollutants to reduce the value of water resource but also nutrients for algaegrowth that debases water quality. Several methods have been used to judge the eutrophicationgrades of lakes, but the judgment results can be different with one another even under samecoditions because each method is different in judgment items and their standards.therefore, developed in this study with the application of fuzzy theory. This method allowsdecision makers to represent the uncertainties (differences) of results by the existing judgmentmethods and also incorporate associated uncertainties directly into the judgment process, so thejudgment results can be made that are more realistic and consistent than those made withouttaking uncertainty in account.
  • 5.

    The Assessment of Coastal Water Quality Grade Using GIS

    Jeong, Jong Chul | Hong-lae Cho | 2006, 15(1) | pp.45~52 | number of Cited : 0
    Abstract PDF
    The purpose of this study is to assess spatiotemporal variation of coastal water qualityaccording to time and location changes. For this we developed numerical marine trophic indexbase on four water quality components (chlorophyll, suspended solids, dissolved inorganicnitrogen and phosphorus) and applied this index to the water quality data measured in thekorean coastal zone for the 7-years period from 1997 to 2003. Water quality data are obtainedonly at selected sites even though they are potentially available at any location. Therefore, inorder to estimate spatial variation of coastal water quality, it is necessary to estimate theunknown values at unsampled locations based on observation data. In this study, we used IDW(Inverse Distance Weighted) method to predict water quality components at unmeasuredlocations and applied marine trophic index to predicted values obtained by IDW interpolation.The results of this study indicate that marine trophic index and spatial interpolation are usefulfor understanding spatiotemporal characteristics of coastal water quality.
  • 6.

    An analysis of the fallow potential in agricultural area by multi-logistic model - A Case study of Ibang-myeon, Changnyeong-gun, Kyungsangnam-do -

    PARK IN-HWAN | 장갑수 | Seo, Dong Jo | 2006, 15(1) | pp.53~65 | number of Cited : 0
    Abstract PDF
    Topographic condition is one of the most important things in farming activities. Thetopographic condition didn’t matter for farming in the past because agricultural products hadcompetitive power in the market. So farmers tried to extend their farms without any concern ofchanged and the competitive power of the farming has been getting weak. This study analyzedthe fallow potential in agricultural area by topographic condition so that we have got results asfollows.Maps of elevation, slope, distance from roads and water resources were made for getting afallow probability model in farms, and these 4 factors were used as independent variables whilea variable on whether it is fallow or not is a dependent variable in logistic regression model.fallow orchard showed the highest value of farm lands, 0.973. Cultivated orchard had 0.730 andupland had 0.616 of the fallow probability. The fields having high fallow potential had highelevation, steep slope, and long distance from water resources and roads. Especially, fieldsCorresponding Author: Jang, Gab-Sue, Dept. of Environmental and Ecological Research, Chungnam Development Institute, 138-42 SangDae-Dong, YuSeong-Gu, DaeJeon 305-313, Korea Tel: 82-42-820-1182 Fax: 82-42-820-1129 E-mail: janggs@cdi.re.kr
  • 7.

    The Impact of Temperature Rising on the Distribution of Plant - in Case of Bamboos and Garlics -

    Inhye Heo | Won-Tae Kwon | Lee Seung Ho and 1other persons | 2006, 15(1) | pp.67~78 | number of Cited : 30
    Abstract PDF
    Global warming brings about changes of diverse environmental, especially changes of plantdistribution. The purpose of this paper is to examine the relationship between temperature riseand changes of northern limit of vegetation growth in Korea. Bamboos (Phyllostachys) andAllium sativum L.) wereselected. The data of the distributions of bamboos and garlic are collected by field survey andinterviews. Temperature is analyzed from 1904 to 2000.The northern limit of Phyllostachysmoves 60-100 km northward, for about 100 years, theperiod of 1907-2003 and mean temperature of Korea increases about 2˚C during the sameJanuary mean temperature. The boundary between the northern type and southern types ofgarlic moves northward 40-140 km from 1980s to 2000. The moving width is broad in the westcoastal region while the width is narrow in the inland and mountain regions. The mean movingwidth is about 100 km.