SZN - AsiaFlux

SZN:Hokkaido University Shizunai Livestock Farm

General site detail　(Updated 28 April 2010)

Site name	Hokkaido University Shizunai Livestock Farm
AsiaFlux site code	SZN
Location	Shizunai, Shinhidaka, Hokkaido, Japan
Position	42º 26' N, 142º 29' E (World Geodetic System 1984)
Elevation	120-130 m above sea level (World Geodetic System 1984)
Slope	1deg sloping down to south
Terrain type	almost flat
Area	100 m x100 m for each of Chemical fertilizer plot and Manure plot(Total area is 7 ha)
Fetch	50-70 m
Climate	cool temperate, Dfb
Mean annual air temperature	7.9 deg C (1979-2000)
Mean annual precipitation	1365 mm (1979-2000)
Vegetation type	hay meadow (Chemical fertilizer and Manure plots)
Domestic species (Overstory)	reed canary grass (Phalaris arundinacea L.), meadow foxtail (Aleopecurus pratensis L.)
Dominant species (Understory)	-
Canopy height	Maximum 1.2 m
Age	More than 30 years in 2010
LAI	-
Soil type	Thaptic Melanudands (Soil Survey Staff, 2006, Mollic Andosol (IUSS Working Group, WRB, 2006))

Observations
Eddy Covariance method (CO₂)

System	Open-path system
Wind speed	Sonic anemometer-thermometer (CSAT3, Campbell Scientific)
Air temperature	Sonic anemometer-thermometer (CSAT3, Campbell Scientific)
Water vapor	NDIR (LI-7500, Li-Cor, USA)
CO₂	NDIR (LI-7500, Li-Cor, USA)
Measurement height	2.51 m at mature plot, 2.42 m at fertilizer plot
Sampling frequency	10 Hz
Averaging time	30 min
Data logger	CR23X-4M (Campbell, USA)
Data storage	CF
Original data	Raw data

Meteorology

Observation items	Levels/ Depth	Instrument
Global solar radiation(incoming)	-
Global solar radiation (outgoing)	-
Long-wave radiation(incoming)	-
Long-wave radiation(outgoing)	-
Net radiation	-
PPFD (incoming)	1.6 m	Quantum sensor (LI-COR LI-190SA)
PPFD (outgoing)	1.6 m	Quantum sensor (LI-COR LI-190SA)
Direct / diffuse radiation	-
Direct / diffuse PPFD	-
Air temperature	2.5 m	Ventilated Pt resistance thermometer (HMP-45A, Vaisala)
Humidity	2.5 m	Capacitive hygrometer (HMP45A, Vaisala)
Soil temperature	-0.05, -0.1, -0.5 m	T-type thermocoupule (T-soil4, Meiwafosis
Soil heat flux	-
Soil water content	-0.05, -0.1 -0.5 m	Dielectric aquameter (EC20, DECAGON)
Wind speed	2.51m at mature plot, 2.42m at fertilizer plot	Sonic anemometer-thermometer (CSAT3, Campbell Scientific)
Wind direction	2.51m at mature plot	Sonic anemometer-thermometer (CSAT3, Campbell Scientific)
Barometric pressure	2.42m at fertilizer plot	Sonic anemometer-thermometer (CSAT3, Campbell Scientific)
Precipitation	-
CO₂concentration	-

Other

Soil respiration	Static closed chamber
Photosynthesis	Static closed chamber
Ecological Investigation	Static closed chamber
CH₄	Static closed chamber (biweekly) 2004-2007
N₂O	Static closed chamber (biweekly) 2004-2007

Observation Period and data Availability

Measurement Period	from August 2004 to August 2007
Measurement Frequency	Continuous
Data Availability	N/A

Contact

Ryusuke HATANO (hatano [at] chem.agr.hokudai.ac.jp)
Graduate School of Agriculture, Hokkaido UniversityKita9,Nishi9,
Kita-ku,Sapporo,Hokkaido 060-8589,Japan
TEL : + 81-11-706-3857FAX : + 81-11-706-2494

Akira MIYATA (amiyat [at] niaes.affrc.go.jp)
Agro-Meteorology Division, National Institute for Agro-Environmental Sciences (NIAES)3-1-1, Kannondai, Tsukuba, Ibaraki 305-8604, Japan
TEL: + 81-29-838-8239FAX: + 81-29-838-8211

Mariko SHIMIZU (mariko-s [at] chem.agr.hokudai.ac.jp)
Graduate School of Agriculture, Hokkaido UniversityKita9,Nishi9,
Kita-ku,Sapporo,Hokkaido 060-8589,Japan
TEL : + 81-11-706-2503FAX : + 81-11-706-2494

Calibration Information

Open-path analyzers were calibrated approximately every year with standard CO2 gases and a dew point generator (LI610; LI-COR Inc., USA)

Infrastructure

2.5m high tower, AC 100V

Research Fund

Research grants from Racing and Livestock Association organized by Japan Grassland Agriculture & Forage Seed Association for the Greenhouse Gas Emissions Mitigation Project in Japanese Grasslands

Other Information

Fertilizer plot and manure plot were established in September 2004. The plots were cut twice per year and were fertilized at the beginning of each growing cycle.Fertilizer and manure application: [Average from 1998 to 2004] Manure: 5.3 FM t ha-1, Slurry: 3.5 FM t ha-1, Chemical Fertilizer:96 kg N ha-1, [Manure plots (2005~)] Manure: 43-44 FM t ha- 1, Chemical Fertilizer: 130-133 kg N ha-1, [Fertilizer (2005~)] Chemical Fertilizer: 164-183 kg N ha-1

Publication

Shimizu, M., Marutani, S., Desyatkin, A.R., Jin, T., Hata, H., Hatano, R. 2009. The effect of manure application on carbon dynamics and budgets in a managed grassland of Southern Hokkaido, Japan. Agriculture, Ecosystems & Environment. 130: 31-40.

Jin, T., Shimizu, M., Marutani, S., Desyatkin, A.R., Iizuka, N., Hata, H., Hatano, R. 2010. Effect of chemical fertilizer and manure application on N2O emission from reed canary grassland in Hokkaido, Japan. Soil Science & Plant Nutrition. 56: 53-65.