Fuji Hokuroku
Flux Observation Site㻮㼕㼛㼐㼕㼢㼑㼞㼟㼕㼠㼥㻌㻯㼑㼚㼠㼑㼞㻌㼛㼒㻌㻶㼍㼜㼍㼚㻲㼡㼖㼕㼥㼛㼟㼔㼕㼐㼍㻌㼒㼛㼞㼑㼟㼠㻌㼙㼑㼠㼑㼛㼞㼛㼘㼛㼓㼥㻌㼞㼑㼟㼑㼍㼞㼏㼔㻌㼟㼕㼠㼑

Monitoring the Carbon Balance in a Larch Forest㼅㼍㼙㼍㼚㼍㼟㼔㼕㻌㻵㼚㼟㼠㼕㼠㼡㼠㼑㻌㼛㼒㻌㻱㼚㼢㼕㼞㼛㼚㼙㼑㼚㼠㼍㼘㻌㻿㼏㼕㼑㼚㼏㼑㼟in the Foothills of Mt. Fuji, Japan㻲㼡㼖㼕㻌㻴㼛㼗㼡㼞㼛㼗㼡㻌㻼㼍㼞㼗1㻲㼡㼖㼕㻌㻴㼛㼗㼡㼞㼛㼗㼡㻌㻲㼘㼡㼤㻌㻻㼎㼟㼑㼢㼍㼠㼕㼛㼚㻌㼟㼕㼠㼑Collaborators
࣭Forest Environment Section of Yamanashi Prefecture, Fujiyoshida City
࣭Fujiyoshida City and Two Other Villages Organization for
the Protection of the Prefectual Estates Given by The Imperial Family
࣭Biodiversity Center of Japan, Ministry of Environment

Center for Global Environmental Research
National Institute for Environmental Studies
16-2 Onogawa, Tsukuba, Ibaraki 305-8506 JAPANࠉࠉ ࠉ
tel:029-850-2384 Email:www-cger@nies.go.jp

Observation Siteࠉࠉࠉࠉࠉࠉࠉࠉࠉࠉࠉ Observation Facilities

Overview
The Center for Global Environmental Research (CGER) established the Tomakomai Flux
Research Site in 1999 to carry out integrated monitoring on the carbon balance in forest
ecosystems. However, the site was damaged by the strong winds accompanying atyphoon in 2004. For this reason we established the Fuji Hokuroku Flux Observation Sitein the foothills of Mt. Fuji as an alternative base for monitoring, and began observations inJanuary 2006. At this observation site, we apply various methodologies to estimate thecarbon sequestration in forest ecosystems, such as the eddy covariance method, forest
vegetation and soil function (photosynthesis, respiration) observations, tree growth andlitter amount measurements, and remote sensing method . Recently, we also began
measurements of methane and BVOC gases - which may directly or indirectly affectglobal warming - adopting a new measurement system. This integrated monitoring should
be beneficial for further assessment and understanding of the exchanges of gas, heat,water and small particles between the land and atmosphere.

ObjectiveLocation

Aza Kawahara, Kamiyoshida, Fujiyoshida City,
Yamanashi Pref.
Latitude and Longitude: 35o 26' N, 138o 45' E
Elevation: 1050-1150 m

Land

Gradient: 3-4 degrees
Soil type:㻌 Coarse-grain volcanic ash

Vegetation

Dominant species: Planted larches
Tree age: about 50-55 years oldTree height: 20–25 m
Area: 150 ha
Spontaneous vegetation: Fujizakura (Prunusincisa)
Forest floor: Broad leaved plants

Mean annual airtemperature
Annualprecipitation

Height: 32 m (aluminum)
Elastic type pole is installed on the top
Instruments are located on the forest
Micrometeorology
floor to monitor micrometeorologicalinstruments (8 sets)phenomena and soil
Photosynthesis,
Chamber systems are installed toRespiration monitoring monitor CO2 balance of larch tree andsystemsoil
Portable cabin (10 m2) for data control
Monitoring officesystems
Monitoring tower

System

8.8 degrees 䠄average of 2006-2010)
1716 mm 䠄average of 2006-2010)

Our objective is to conduct integrated monitoring research on forest ecosystems such ascarbon cycle as a part of global environment monitoring.

Item
Three-dimensional sonicanemometer-thermometer
Open-path systems (CO2and H2O flux)
Closed-path systems (CO2and H2O flux)
Enclosed-path systems(CO2 flux, latent heat flux)

Number Height(m)
135

135

135

135

Concentration CO2 profile

1035, 32, 27,
22, 16, 10,
4.5, 2, 1,
0.5

Soil
respiration

Continuous (automatedchambers)

24

Forest floor

Fisheye lens camera

6Digital Camera

4Eddy
covariancemethodPhenology

Global solar radiation(incoming)
Global solar radiation(outgoing)
Net radiation
PPFD (incoming)
PPFD (outgoing)
Direct/diffuse spectralradiation
Meteorology

632, 2 (5)330, 2 (2)36432, 2 (2)32, 2 (5)30, 2 (3)132

Spectral radiation (incoming) 2
Spectral radiation (outgoing) 2
Spectral direct solar
radiation

Forestfloor mapᯘᗋ㒊ࢭࣥࢧ࣮㓄⨨ᅗ

Tower

Data logger

32, 22, 2(2䠅, 2(rotate)
26 (N), 24(E, N), 23(W)1Air temperature andhumidity10

Two-dimensional wind

732, 2(rotate)30, 2(rotate)
32
35, 32, 27,
22, 16, 10,
4.5, 2, 1,
0.5
32, 27, ,22,