All Issue

2021 Vol.54, Issue 9 Preview Page

Research Article

Spatial assessment of heat wave and river water quality

폭염과 하천 수질의 공간적 평가

Jiwan Leea
,
Sehoon Kimb*
,
Daeyoung Hanc
,
Hyungjin Shind
,
Hyeokjin Lime
,
Seongjoon Kimf
이 지완a
,
김 세훈b*
,
한 대영c
,
신 형진d
,
임 혁진e
,
김 성준f
aResearch Professor, Division of Civil and Environmental Engineering, College of Engineering, Konkuk University, Seoul, Korea
bPh.D. Candidate, Department of Civil, Environmental and Plant Engineering, Graduate School, Konkuk University, Seoul, Korea
cMaster Student, Department of Civil, Environmental and Plant Engineering, Graduate School, Konkuk University, Seoul, Korea
dAssociate Researcher, Rural Research Institute, Ansan, Korea
eSenior Researcher, Korea Institute of Hydrological Survey, Goyang, Korea
fProfessor, Division of Civil and Environmental Engineering, College of Engineering, Konkuk University, Seoul, Korea
a건국대학교 공과대학 사회환경공학부 학술연구교수
b건국대학교 일반대학원 사회환경플랜트공학과 박사수료
c건국대학교 일반대학원 사회환경플랜트공학과 석사과정
d한국농어촌공사 농어촌연구원 주임전임연구원
e한국수자원조사기술원 조사기획팀 책임연구원
f건국대학교 공과대학 사회환경공학부 교수
*Corresponding Author
30 September 2021. pp. 693-704
PDF XML Citation
Abstract

The purpose of this study is to evaluate the relationship between heat wave and river water quality. The daily maximum air temperature (Tmax) of 91 meteorological stations of the Korea Meteorological Administration and 13 river water quality factors (DO, BOD, COD, TOC, TN, DTN, NH4-N, NO2-N, NO3-N, TP, DTP, PO4-P, Chl-a) of Ministry of Environment were analyzed. The correlation analysis was performed on Tmax and water quality factors, and the determination coefficients (R2) of DO, Chl-a, and TN with Tmax showed high values of 0.782, 0.609, and 0.691 respectively. To analyze the spatial impact between heat waves and water quality factors, the heat wave intensity (HWI) and heat wave duration (HWD) were calculated using the Tmax. The hotspot and spatial statistical analyses were applied for spatial impact evaluation. As a result of hotspot analysis, the heat wave index (HWD, HWI) showed high spatial pattern in the downstream of Nakdong River basin, and Chl-a and TN showed the same pattern. In case of spatial statistical analysis for water quality due to heat wave, the most obvious spatial variability was DO.

Keywords
Heat wave
Water quality
Correlation analysis
Hotspot analysis
Spatial statistical analysis

본 연구는 폭염과 하천수질과의 상관성을 평가하기 위한 것이다. 기상청 91개의 기상관측소의 일 최고기온 과 환경부 수질관측망 918개에 대한 13개의 하천수질인자(DO, BOD, COD, TOC, TN, DTN, NH4-N, NO2-N, NO3-N, TP, DTP, PO4-P, Chl-a)를 대상으로 분석하였다. 최고기온과 수질인자에 대한 상관성 분석을 수행하였으며, DO, Chl-a, T-N의 상관계수(R2)가 0.782, 0.609, 0.691로 가장 높은 상관성을 나타내었다. 폭염과 수질인자 간의 공간적 영향 분석을 위해, 일 최고기온을 이용하여 폭염강도(heat wave intensity, HWI)와 폭염지속시간(heat wave duration, HWD)를 산정하였다. 공간적 영향 평가는 핫스팟 분석과 공간통계분석을 실시하였다. 핫스팟 분석결과 폭염지수(HWD, HWI)는 낙동강 하류유역에 대해 높은 공간상관성을 나타내었으며 수질인자 중 Chl-a, TN이 동일한 결과를 나타내었다. 폭염에 따른 수질 영향 지역 공간 통계분석 결과 공간적인 변동성이 가장 뚜렷하게 나타나는 수질인자는 DO인 것으로 분석되었다.

키워드
폭염
수질
상관분석
핫스팟분석
공간통계분석
References
1
Baik, J., and Choi, M. (2015). "Evaluation of remotely sensed actual evapotranspiration products from COMS and MODIS at two different flux tower sites in Korea." International Journal of Remote Sensing, Vol. 36, No. 1, pp. 375-402. 10.1080/01431161.2014.998349
2
Getis, A., and Ord, J.K. (2010). The analysis of spatial association by use of distance statistics. In perspectives on spatial data analysis. Springer, Berlin, Heidelberg, Germany, pp. 127-145. 10.1007/978-3-642-01976-0_10
3
Han, J., and Lee, M. (2016). "Cancer cluster detection using scan statistic." Journal of the Korean Data and Information Science Society, Vol. 27, No. 5, pp. 1193-1201. 10.7465/jkdi.2016.27.5.1193
4
Hwang, S.J., Kim, K., Park, C., Seo, W., Choi, B.G., Eum, H.S., and Shin, J.K. (2016). "Hydro-meteorological effects on water quality variability in Paldang reservoir, confluent area of the South-Han River-North-Han River-Gyeongan Stream, Korea." Korean Journal of Ecology and Environment, Vol. 49, No. 4, pp. 354-374. 10.11614/KSL.2016.49.4.354
5
Hwang, S.J., Sim, Y.B., Choi, B.G., Kim, K., Park, C., Seo, W., and Shin, J.K. (2017). "Rainfall and hydrological comparative analysis of water quality variability in Euiam Reservoir, the North-Han River, Korea." Korean Journal of Ecology and Environment, Vol. 50, No. 1, pp. 29-45. 10.11614/KSL.2017.50.1.029
6
Intergovernmental Panel on Climate Change (IPCC) (2007). Climate change 2007-the physical science basis: Working group I contribution to the fourth assessment report of the IPCC. Vol. 4. Cambridge University Press, Cambridge, UK.
7
Jiang, J., Sharma, A., Sivakumar, B., and Wang, P. (2014). "A global assessment of climate-water quality relationships in large rivers: An elasticity perspective." Science of the Total Environment, Vol. 468, pp. 877-891. 10.1016/j.scitotenv.2013.09.00224080415
8
Joehnk, K.D., Huisman, J.E.F., Sharples, J., Sommeijer, B.E.N., Visser, P.M., and Stroom, J.M. (2008). "Summer heatwaves promote blooms of harmful cyanobacteria." Global Change Biology, Vol. 14, No. 3, pp. 495-512. 10.1111/j.1365-2486.2007.01510.x
9
Jung, S.Y., and Kim, I.K. (2017). "Analysis of water quality factor and correlation between water quality and Chl-a in middle and downstream weir section of Nakdong River." Journal of Korean Society of Environmental Engineers, Vol. 39, No. 2, pp. 89-96. 10.4491/KSEE.2017.39.2.89
10
Korea Meteorological Administration (KMA) (2018). Comparison of heatwaves in 2018 and 1994. pp. 4-8.
11
Kulldorff, M. (1997). "A spatial scan statistic." Communications in Statistics-Theory and methods, Vol. 26, No. 6, pp. 1481-1496. 10.1080/03610929708831995
12
Lee, J.E., Choi, J.W., and An, K.G. (2012). "Influence of landuse pattern and seasonal precipitation on the long-term physico-chemical water quality in Namhan River Watershed." Journal of Environmental Science International, Vol. 21, No. 9, pp. 1115-1129. 10.5322/JES.2012.21.9.1115
13
Lee, N.Y., and Cho, Y.S. (2015). "Estimation of the medical costs incurred by the elderly in Korea due to heat waves and analysis of the causes for expenditure." Journal of Environmental Policy and Administration, Vol. 23, No. 2, pp. 153-172. 10.15301/jepa.2015.23.2.153
14
Lee, W.S. and Lee, M.I. (2016). "Interannual variability of heat waves in South Korea and their connection with large-scale atmospheric circulation patterns." International Journal of Climatology, Vol. 36, No. 15, pp. 4815-4830. 10.1002/joc.4671
15
Min, Y.H., Hyun, D.Y., Eum, C.H., Chung, N.H., Kang, S.W., and Lee, S.H. (2011). "A study on relationship of concentration of phosphorus, turbidity and pH with temperature in water and soil." Analytical Science and Technology, Vol. 24, No. 5, pp. 378-386. 10.5806/AST.2011.24.5.378
16
Park, J., Kal, B., and Kim, S. (2020). "Analysis of air-water temperature elasticity taking into account the confidence interval in major tributary of Nakdong River." Journal of Wetlands Research, Vol. 22, No. 3, pp. 178-186.
17
Park, J., Sohn, S., and Kim, Y. (2014). "Comparison of characteristics of ammonia nitrogen in streams by watershed characteristics and season." Proceedings of the 2014 Spring Co-Conference of the Korean Society on Water Environment and Korean Society of Water and Wastewater, KSWE, pp. 610-611.
18
Park, K.H., Song, B.G., and Park, J.E. (2016). "Analysis on the effects of land cover types and topographic features on heat wave days." Journal of the Korean Association of Geographic Information Studies, Vol. 19, No. 4, pp. 76-91. 10.11108/kagis.2016.19.4.076
19
Van Vliet, M.T.H., and Zwolsman, J.J.G. (2008). "Impact of summer droughts on the water quality of the Meuse river." Journal of Hydrology, Vol. 353, No. 1-2, pp. 1-17. 10.1016/j.jhydrol.2008.01.001
20
Water Environment Information System (WEIS) (2021). South Korea, assessed 3 May 2021, <http://water.nier.go.kr>.
21
Wetz, M.S., and Yoskowitz, D.W. (2013). "An 'extreme'future for estuaries? Effects of extreme climatic events on estuarine water quality and ecology." Marine Pollution Bulletin, Vol. 69, No. 1-2, pp. 7-18. 10.1016/j.marpolbul.2013.01.02023474351
Information
  • Publisher :KOREA WATER RESOURECES ASSOCIATION
  • Publisher(Ko) :한국수자원학회
  • Journal Title :Journal of Korea Water Resources Association
  • Journal Title(Ko) :한국수자원학회 논문집
  • Volume : 54
  • No :9
  • Pages :693-704
  • Received Date : 2021-06-21
  • Revised Date : 2021-07-05
  • Accepted Date : 2021-07-05
  • DOI :https://doi.org/10.3741/JKWRA.2021.54.9.693
Journal Informaiton Journal of Korea Water Resources Association Journal of Korea Water Resources Association
Online Submission
Archives
  • scopus
  • KCI-수자원
  • NRF
  • KOFST
  • KISTI Current Status
  • KISTI Cited-by
  • crosscheck
  • orcid
  • open access
  • ccl
Journal Informaiton Journal Informaiton - close