GDK: Gwangreung Deciduous forest (previous name: KoFlux Gwangneung Supersite - Deciduous forest

GDK site photos

General site details

Site nameGwangreung Deciduous forest (previous name: KoFlux Gwangneung Supersite - Deciduous forest
AsiaFlux site codeGDK
LocationSohol-eup, Pocheon-si, Gyeonggi-do, Republic of Korea
Position37º 44' 56" N, 127º 8' 57" E
Elevation252 m a.s.l
SlopeDominant slopes 10~20º max. 51º
Terrain typeMountainous area
Area221 ha
Fetch2000m x 1000m
ClimateTemperate(snow - winter dry - hot summer(Dwa))
Mean annual air temperature11.5 ºC
Mean annual precipitation1332 mm
Vegetation typeMixed deciduous forest
Dominant Species (Overstory)Quercus acutissima. Quercus serrata, and Carpinus laxiflora
Dominant Species (Understory)Euonymus oxyphyllus and Cornus kousa
Canopy height20 m
Age80-200 years old
LAI1 to 6(±1), max at June
Soil typeSilty Loam
URLhttp://www.ncam.kr/page/koflux/database/index.php

Observation

Eddy Covariance method (CO2)

SystemEnclosed path (CO2 flux, latent heat flux, after July 2015)
Wind speed3D sonic anemometer (CSAT3, Campbell Sci., Inc., USA)
Air temperature3D sonic anemometer (CSAT3, CSI)
Water vaporEnclosed path infrared gas analyzer (CPEC200, CSI)
CO2Enclosed path infrared gas analyzer (CPEC200, CSI)
Measurement height40 m
Sampling frequency10 Hz
Averaging time30 min
Data loggerCR3000, CSI
Data storageHD
Original dataRaw data ( and statistics)

Meteorology

Observation items Levels/Depth Instrument
Global solar radiation(incoming) 38 m Net radiometer
(CNR1, Kipp & Zonen, Netherlands)
Global solar radiation (outgoing) 38 m Net radiometer
(CNR1, Kipp & Zonen, Netherlands)
Long-wave radiation(incoming) 38 m Net radiometer
(CNR1, Kipp & Zonen, Netherlands)
Long-wave radiation(outgoing) 38 m Net radiometer
(CNR1, Kipp & Zonen, Netherlands)
Net radiation 38 m Net radiometer
(CNR1, Kipp & Zonen, Netherlands)
PPFD (incoming) -
PPFD (outgoing) -
Direct / diffuse radiation -
Direct / diffuse PPFD -
Air temperature 40 m Temperature and RH prove<br>(HMP155, Vaisala, Finland)sensor
Air temperature 40, 30, 20, 15, 10, 3, 1, 0.1 m Profile system<br>(AP200, Campbell Sci., Inc., USA)
Air temperature 20, 3 m Weather transmitter (WXT520, Vaisala)
Humidity 40 m Temperature and RH prove (HMP155)
Humidity 20, 3 m Weather transmitter (WXT520)
Soil temperature 0- -0.1 m, -0.1- -0.2 m Soil thermocouple probe (TCAV, CSI)
Soil heat flux -0.1 m Heat flux plate<br>(HFP01, Hukseflux Thermal Sensors B.V., Netherlands)
Soil water content 0- -0.1 m, -0.1- -0.3m, -0.3- -0.6 m Water content reflectometer (CS616, CSI)
Wind speed 40 m 3D sonic anemometer (CSAT3, CSI)
Wind speed 20, 3 m Weather transmitter (WXT520)
Wind direction 40 m 3D sonic anemometer (CSAT3, CSI)
Wind direction 20, 3 m Weather transmitter (WXT520)
Barometric pressure 40 m Enclose path infrared gas analyzer (CPEC200,CSI)
Barometric pressure 20, 3 m Weather transmitter (WXT520)
Precipitation 15 m Tipping Bucket<br>(WDR-205, Wedaen, Korea)
CO2 concentration 40, 30, 20, 15, 10, 3, 1, 0.1 m Profile system (AP200)
H2O concentration 40, 30, 20, 15, 10, 3, 1, 0.1 m Profile system (AP200)

Soil respiration

Measurement method Chamber method
Reference(s) for method -
Measuring system Automated chamber system, Portable chamber
IRGA LI-820 (Li-Cor), LI-6400 (Li-Cor)

Other

Photosynthesis Sap flow measurement, portable chamber (LI-6400)
Ecological investigation LAI, tree ring growth rate, litter fall, camera image

Observation Period and Data Availability

Measurement PeriodFrom 2002 to present
Measurement FrequencyContinuous
Data Availability2004 - 2008 in AsiaFlux Database

Contact

Minseok Kang (ms-kang [at] ncam.kr)
National Center for Agro-Meteorology
Bld.36/Rm.109, Seoul National University, 1 Gwanak-ro, Gwanak-gu,
Seoul 08826, Korea
Phone: +82-2-871-0232 Fax: +82-2-871-0230

Joon Kim (joon [at] snu.ac.kr)
Department of Landscape Architecture & Rural Systems Engineering,
Seoul National University
Complex Systems Science Laboratory, Bld.36/Rm.108, Seoul National
University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Korea
Phone: +82-2-880-4663 Fax: +82-2-871-0230

Junghwa Chun (chunjh69 [at] korea.kr)
Division of Forest Ecology, National Institute of Forest Science
National Institute of Forest Science, 57 Hoegi-ro, Dongdaemun-gu,
Seoul 02455, Korea
Phone: +82-2-961-2605 Fax: +82-2-961-2629

Jong-Hwan Lim (limjh [at] korea.kr)
Division of Forest Ecology, National Institute of Forest Science
National Institute of Forest Science, 57 Hoegi-ro, Dongdaemun-gu,
Seoul 02455, Korea
Phone: +82-2-961-2601 Fax: +82-2-961-2629

Infrastructure

Tower, Electrical power(AC)

Research Fund

National Institute of Forest Science (Long-term Ecological Research on Forest Ecosystem)

Korea Forest Service (Projects #2020180B10-2022-BB01,
#2017099A00-1719-BB01, #S111215L020110)

Korea Meteorological Administration (Projects KMIPA-2015-2023,KMIPA-2012-0001-2)

Publication

Kang, M., B. L. Ruddell*, C.-H. Cho, J.-H. Chun, and J. Kim (2017). "Identifying CO2 Advection on a Hill Slope Using Information Flow." Agricultural and Forest Meteorology 232: 265-278. Kim, D., Y. Lim, M. Kang, and M. Choi* (2016). "Land Response to Atmosphere at Different Resolutions in the Common Land Model over East Asia." Advances in Atmospheric Sciences 33(3): 391-408. Lee, S.-J.*, J. Kim, M. Kang, and B. Malla Thakuri, (2014). "Numerical Simulation of Local Atmospheric Circulations in the Valley of Gwangneung KoFlux Sites (in Korea with English abstract)." Korean Journal of Agricultural and Forest Meteorology 16(3): 246-260. Kang, M., J. Kim*, H.-S. Kim, B. Malla Thakuri, and J.-H. Chen (2014). "On the Nighttime Correction of Eddy Covariance CO2 Flux Measurement over Temperate Forests in Complex Terrain (in Korean with English abstract)." Korean Journal of Agricultural and Forest Meteorology 16(3): 233-245. Shim, C.*, J. Hong, Y. Kim, M. Kang, B. Malla Thakuri, Y. Kim, and J.-H. Chun (2014). "Evaluation of MODIS GPP over a Complex Ecosystem in East Asia: a Case of Gwangneung Flux Tower in Korea." Advances in Space Research 54: 2296-2308. Jung, E.-Y., D. Otieno, H. Kwon, B. Lee, J.-H. Lim, J. Kim and J. Tenhunen (2013). "Water use by a warm-temperate deciduous forest under the influence of the Asian monsoon: contributions of the overstory and understory to forest water use." Journal of Plant Research 126(5): 661-674. Kang, M., H. Kwon, J. Cheon, and J. Kim (2012). "On estimating wet canopy evaporation from deciduous and coniferous forests in the Asian monsoon climate." Journal of Hydrometeorology 13, 950-965. Hong, J. and J. Kim (2011). "Impact of the Asian monsoon climate on ecosystem carbon and water exchanges: A wavelet analysis and its ecosystem modeling implication." Global Change Biology 17(5): 1900-1916. Chae, N. (2011). "Annual Variation of Soil Respiration and Precipitation in a Temperate Forest (Quercus serrata and Carpinus laxiflora) under East Asian Monsoon Climate." Journal of Plant Biology 54(2): 101-111. Yuan, R., M. Kang, et al. (2010). "Expansion of the planar-fit method to estimate flux over complex terrain." Meteorology and Atmospheric Physics 110(3-4): 123-133. Lee, N.-y., J.-W. Koo, et al. (2010). "Autotrophic and heterotrophic respiration in needle fir and Quercus dominated stands in a cool-temperate forest, central Korea." Journal of Plant Research 123(4): 485-495. Lee, N.-y., J.-W. Koo, et al. (2010). "Seasonal variation in soil CO2 efflux in evergreen coniferous and broad-leaved deciduous forests in a cool-temperate forest, central Korea." Ecological Research 25(3): 609-617. Lee, D., J. Kim, et al. (2010). "Partitioning of catchment water budget and its implications for ecosystem carbon exchange." Biogeosciences 7(6): 1903-1914. Kwon, H., J. Kim, et al. (2010). "Influence of the Asian Monsoon on net ecosystem carbon exchange in two major plant functional types in Korea." Biogeosciences 7: 1493-1504. Kim, Y., S. Kang, et al. (2010). "Inter-annual and inter-plot variations of wood biomass production as related to biotic and abiotic characteristics at a deciduous forest in complex terrain, Korea." Ecological Research 25(4): 757-765. Kim, S.-J., J. Kim, et al. (2010). "Organic carbon sequestration and discharge from a deciduous forest catchment in Korea." Biogeosciences 7: 1323-1334. Jang, K., S. Kang, et al. (2010). "Mapping evapotranspiration using MODIS and MM5 Four-Dimensional Data Assimilation." Remote Sensing of Environment 114(3): 657-673. Lee, H. A., T.-K. Hong, et al. (2009). "Effects of Evapotranspiration and Earth Tides on the Water-Level Fluctuation in a Forest Catchment in Gwangneung." Asia-Pacific Journal of Atmospheric Sciences 45(2): 113-120. Kwon, H., T.-Y. Park, et al. (2009). "Seasonality of Net Ecosystem Carbon Exchange in Two Major Plant Functional Types in Korea." Asia-Pacific Journal of Atmospheric Sciences 45(2): 149-163. Kim, S.-J., D. Lee, et al. (2009). "Use of Isotope Data to Determine Mean Residence Time (MRT) of Water in a Forest Catchment: 35S and 3H-based Estimates." Asia-Pacific Journal of Atmospheric Sciences 45(2): 165-173. Kang, M., S. Park, et al. (2009). "Evapotranspiration from a Deciduous Forest in a Complex Terrain and a Heterogeneous Farmland Under Monsoon Climate." Asia-Pacific Journal of Atmospheric Sciences 45(2): 175-191. Jang, K., S. Kang, et al. (2009). "Evaluation of Shortwave Irradiance and Evapotranspiration Derived from Moderate Resolution Imaging Spectroradiometer (MODIS)." Asia-Pacific Journal of Atmospheric Sciences 45(2): 233-246. Ryu, Y., S. Kang, et al. (2008). "Evaluation of land surface radiation balance derived from moderate resolution imaging spectroradiometer (MODIS) over complex terrain and heterogeneous landscape on clear sky days." Agricultural and Forest Meteorology 148(10): 1538-1552. Lim, H.-j. and Y.-H. Lee (2008). "Processing and Quality Control of Flux Data at Gwangneung Forest." Korean Journal of Agricultural and Forest 10(3): 82-93. Hong, J., J. Kim, et al. (2008). "Estimation of the storage and advection effects on H2O and CO2 exchanges in a hilly KoFlux forest catchment." Water Resources Research 44: W01426. Kim, J. (2007). "KoFlux 2006 Synthesis : HydroKorea and CarboKorea - Forward." Korean Journal of Agricultural and Forest Meteorology 9(2): 71-74. Choi, I.-H., N. C. Woo, et al. (2007). "Estimation of the Groundwater Recharge Rate during a Rainy Season at a Headwater Catchment in Gwangneung, Korea." Korean Journal of Agricultural and Forest Meteorology 9(2): 75-87. Moon, S.-K., Y. Ryu, et al. (2007). "Quantifying the Spatial Heterogeneity of the Land Surface Parameters at the Two Contrasting KoFlux Sites by Semivariogram." Korean Journal of Agricultural and Forest Meteorology 9(2): 140-148. Yuan, R., M. Kang, et al. (2007). "The Effect of Coordinate Rotation on the Eddy Covariance Flux Estimation in a Hilly KoFlux Forest Catchment." Korean Journal of Agricultural and Forest Meteorology 9(2): 100-108. Kim, E. S., S. K. Kang, et al. (2007). "Parameterization and Application of Regional Hydro-Ecologic Simulation System (RHESSys) for Integrating the Eco-hydrological Processes in the Gwangneung Headwater Catchment." Korean Journal of Agricultural and Forest Meteorology 9(2): 121-131. Son, M., S. Kim, et al. (2007). "Univariate Analysis of Soil Moisture Time Series for a Hillslope Located in the KoFlux Gwangneung Supersite." Korean Journal of Agricultural and Forest Meteorology 9(2): 88-99. Lee, D., J. Kim, et al. (2007). "Lessons from Cross-Scale Studies of Water and Carbon Cycles in the Gwangneung Forest Catchment in a Complex Landscape of Monsoon Korea." Korean Journal of Agricultural and Forest Meteorology 9(2): 149-160. Kim, S.-J., D. Lee, et al. (2007). "Hydro-Biogeochemical Approaches to Understanding of Water and Carbon Cycling in the Gwangneung Forest Catchment." Korean Journal of Agricultural and Forest Meteorology 9(2): 109-120. Kim, J., et al., (2006). Upscaling CO2 flux from tower to landscape:Overlaying tower flux footprint calculations on high resolution(IKONOS) vegetation density images, Agricultural and Forest Meteorology, 136, 132-146. Kim, J., et al.,(2006). HydroKorea and CarboKorea: cross-scale studies of ecohydrology and biogeochemistry in a heterogeneous and complex forest catchment of Korea, Ecological Research, 21, 881-889. Cho, Kyungsook, et al.(2003). Characteristics of Canopy Heat Storage within a Conifer at Kwangneung Arboretum in Korea From September to December 2001, Korean Journal of Agricultural and Forest Meteorology, 6(1), 37-45. Kim, C.S. et al.(2003). Nurtient, Dynamics in Litterfall and Decomposing Leaf Litter at the Kwangneung Deciduous Broad-leaved Natural Forest., Korean Journal of Agricultural and Forest Meteorology, 5(2), 87-93. Moon, B.K. et al., (2003), Field Intercomparison and Calibration of Net Radiometers Korean Journal of Agricultural and Forest Meteorology, 5(2), 128-137. Son, Y.H, et al.(2003). Forest Stand Structure, Site, Characteristics and Carbon Budget of the Kwangneung Natural Forest in Korea, Korean Journal of Agricultural and Forest Meteorology, 5(2), 110-115. Hong, J.K. et al.(2003), Inferring Regional Scale Surface Heat Flux around FK KoFlux Site: From One Point Tower Measurement to MM5 Mesoscale Model, Korean Journal of Agricultural and Forest Meteorology, 5(2), 138-149.