2007, Vol.16, No.5

Journal of Environmental Impact Assessment 2023 KCI Impact Factor : 0.51

pISSN : 1225-7184
https://journal.kci.go.kr/kseia

This study was conducted based on the 115 development projects of residential areas during2001-2006 to investigate the current status of park· green areas. Prior Environmental ReviewSystem (PERS) was categorized into regions, scales, and time of the projects, and regressionmodel was used for a statistical analysis. The ratios of greenness of Seoul and Gyunggi provincewere greater than those of other regions whereas the ratios of greeness of Cheonnam,Chungbuk, and Jeonbuk provinces showed smaller percentage of green areas. Secondly as thescales of development get bigger areas of greenness become larger indicating a large scaleresidential development projects are favorable for securing green areas. Thirdly the correlationbetween planned area and green areas, and that between planned population and the ratio ofgreenness are relatively low (P>0.05). This implies green areas are not a good indicator but aconcrete guideline for green areas. Fourthly the ratio of greenness of small scale project is notreached to 10% so that it is recommended to secure over one million m2 areas for developmentproject.

Recently, since the risk on natural disasters is increasing due to abnormal weather such as theglobal warming, a need for a system on prior review on the influence of disasters has emerged inorder to establish a solution by analyzing elements of disaster in advance. However, since theinherently destroying business namely the quarrying business is excluded from the range ofsubject business of Prior Review System on the influence of disasters, a correction for this isrequired. In order to actually explore how much risk it contains, actual outflow of soil and flood inthe quarrying block where quarrying is being currently carried out was examined and the requiredundercurrent facility capacity which is also used as a grit chamber was investigated. In addition, bycomparing the soil outflow of industrial complexes and golf courses which are current subjectbusinesses of Prior Review on the Influence of Disasters and that of rock mountains relative risklevel was examined. After investigation, it was found that the risk on occurrence of disasters wasincreased due to increase in outflow of soil and flood because of the change of land conditionduring and after development thus an adequate solution to decrease is required. In addition, aftercomparison with other business groups it was found that a significantly higher amount of soil isoutflown in case of rock mountains thus it was analyzed that a solution to decrease is required.Therefore, a correction is immediately required in order to include quarrying business in the subject business of Prior Review System on the Influence of Disasters.

The PM10 and PM 2.5aerosols were collected at Busan from March to May, 2005, and theconcentrations of some metallic elements were analysed to study their characteristics. The meanconcentration of PM10 was 66.5± 23.0 mg/m 3 with a range of 22.2 to 118.1 mg/m 3. The meanconcentration of PM2.5was 46.1± 17.2 mg/m 3 with a range of 9.7 to 83.3 mg/m 3. The ratio ofPM2.5/ PM10 was 0.69 at Busan. The distribution of metallic elements for PM10 and PM 2.5wereCd<Ni<Cr<Ti<Sr<....<Al<K<Fe<Si<Na and Cd<Cr<Ti<Ni....<K<Al<Si<Fe<Na, respectively.The mean mass concentrations of Asian dust and non Asian dust in PM10 were 94.9 mg/m 3 and63.7 mg/m 3, respectively. And The mean mass concentrations of Asian dust and non Asian dustin PM2.5were 56.9 mg/m 3 and 45.1 mg/m 3, respectively. The mean values of crustal enrichmentfactors for five elements (Cd, Cu, Pb, V and Zn) were all higher than 10, possibly suggesting theinfluence of anthropogenic sources. The soil contribution ratios for PM10 and PM 2.5were 20.5%and 19.4, respectively.