Interdisciplinary research for carbon cycling in a...
Transcript of Interdisciplinary research for carbon cycling in a...
Interdisciplinary research for carbon cycling in Interdisciplinary research for carbon cycling in a forest ecosystem and scaling to a mountainous a forest ecosystem and scaling to a mountainous
landscape in landscape in TakayamaTakayama, central Japan., central Japan.-- Scaling from plot to landscape by Scaling from plot to landscape by ““Satellite EcologySatellite Ecology”” --
Hiroyuki MURAOKAHiroyuki MURAOKADirector of 21Director of 21stst Century COE Program Century COE Program ““Satellite EcologySatellite Ecology””,,
Institute for Basin Ecosystem Studies, Gifu University, JapanInstitute for Basin Ecosystem Studies, Gifu University, Japan
Asia-Pacific Workshop on Carbon Cycle Observations (March 17 – 19, 2008)
Revealing carbon cycle processes and scalingRevealing carbon cycle processes and scaling
forested catchment including Takayama site
Landscape level Regional level
National levelEast Asia
Carbon cycling in plot, landscape, regional, continental and global……
In mountainous landscapes, scaling should be done carefully from a canopy to ecosystems, landscape, regional…,
… If we donIf we don’’t want to miss the consequences of the processes t want to miss the consequences of the processes ……
Spatial resolution must be tested carefullySpatial resolution must be tested carefully
0.001º (100 m)
0.01º (1 km) …… MOD15, MOD17
0.0001º (10 m)
20km600m a.s.l 1500m a.s.l
Vegetation and land-use type distributionin a forested catchment of TakayamaTakayama sitesite
(2-10m resolution by CASI-III, ALOS, QuickBird)
High spatial resolution provides:
(1) consequences of ecosystem structure/function – meteorology – topography interactions
(2) accurate estimate of spatial patterns of ecosystem functions
(3) application to ecosystem management policy
COCO22 cycling research: scale and methodscycling research: scale and methods
Simulation modelsCO2 flux / meteorologicalobservation
Ecological process research
Satellite remote sensing
TopicsTopics
Introduction
Carbon cycling study in a coolCarbon cycling study in a cool--temperate forest.temperate forest.- Combining ecological process research and CO2 flux obs.
in “Takayama site”, central Japan.
Scaling carbon budget processes from plot to landscape.Scaling carbon budget processes from plot to landscape.- “Satellite Ecology”: an interdisciplinary approch forfine- spatial and temporal resolution estimates.
Networking for future research and education.Networking for future research and education.
TopicsTopics
Introduction
Carbon cycling study in a coolCarbon cycling study in a cool--temperate forest.temperate forest.- Combining ecological process research and CO2 flux obs.
in “Takayama site”, central Japan.
Scaling carbon budget processes from plot to landscape.- “Satellite Ecology”: an interdisciplinary approch forfine- spatial and temporal resolution estimates.
Networking for future research and education.
TakayamaTakayama supersuper--site to bridge research communitiessite to bridge research communities
http://www.asiaflux.net/
JapanFluxJapanFlux
JaLTERJaLTER
FLUXNETFLUXNET
LTERLTER(Long Term Ecological Research network)
TakayamaTakayama supersuper--sitesiteEvergreen coniferous
forest (TKC)Deciduous broadleaf
Forest (TKY)
Temp
Prec
TKY
TKC
Interdisciplinary approach for carbon cycling studyInterdisciplinary approach for carbon cycling study
Interdisciplinary approach
< Tower observation >Continuous measurements in high temporal resolution- ecosystem scale response
to climatic conditions -
< Ecological process study >Revealing the processes of carbon flow and pools- ecological mechanisms of
the ecosystem reponse -
COCO22 flux by tower measurementsflux by tower measurements
CO2uptake
release
CO2 flux: seasonal change
NEP: Net Ecosystem Production
CO2 flux: diurnal change
CO2 flux: yearly change
Carbon pools and flows by ecological researchCarbon pools and flows by ecological research
Carbon pools Carbon flows
Yearly NEP and its ecological determinants in TKYYearly NEP and its ecological determinants in TKY
-2
0
2
4
6
8
NE
P (
gCm
-2da
y-1 )
1994 1995 1996 1997 1998 1999 2000 2001 2002~
GPP (Gross Primary Production)NPP (Net Primary Production)Re (Ecosystem Respiration)Rs (Soil Respiration)NEP (Net Ecosystem Production)Ra (Aboveground Respiration)
Yearly GPP depends on LAI and leaf photosynthesisYearly GPP depends on LAI and leaf photosynthesisLA
I (m
2m
-2)
Leaf photosynthesisLeaf Area Index
DOY
Process-base model
•
1-D process-based•
Hourly outputs•
Sun/shade partitioning•
FvCB
+ BWB calculation
Vcm
ax25
(μm
olm
-2s-
1 )
2004 20052202.2
(gC m-2 y-1)2115.7
(gC m-2 y-1)Canopy GPP
UnderstoryGPP
20032075.4
(gC m-2 y-1)
snow
GP
P (m
mol
CO
2m
-2da
y-1 )
TopicsTopics
Introduction
Carbon cycling study in a cool-temperate forest.- Combining ecological process research and CO2 flux obs.
in “Takayama site”, central Japan.
Scaling carbon budget processes from plot to landscape.Scaling carbon budget processes from plot to landscape.- “Satellite Ecology”: an interdisciplinary approch forfine- spatial and temporal resolution estimates.
Networking for future research and education.
COCO22 flux estimates by remote sensingflux estimates by remote sensing
MODIS GPP estimation (MOD17) at Takayama site
Satellite remote sensing is useful, but still needs careful tests considering the spatial heterogeneity in ecosystem structure and complexity in topography and micro-climatic conditions.
Linking ecosystem ecology, remote sensing, micrometeorology and modeling for studying ecosystem structure and function in complex landscape.
Satellite Ecology(SATECO)
2121stst Century COE Program Century COE Program ““Satellite EcologySatellite Ecology”” in Gifu Univ.in Gifu Univ.
Ecological Process ResearchVegetation structure, plant growth,
plant ecophysiology, soil respiration, etc...
Remote Sensing AnalysisDistribution of various ecosystems and their components (leaf area, biomass), etc...
Meteorological Obs. and Modelling
Measurements of CO2 and heat fluxes, simulation models
Study plots around Study plots around TakayamaTakayama sitesite
Takayama city
600m asl 1500m asl
deciduous coniferousforest (50-yr)
deciduous broadleavedforest (20-yr)
field station
evergreen coniferousforest (50-yr) TKC
deciduous broadleavedforest (50-yr) TKY
Takayama
Gifu
Land use (ecosystem type) mapsRS indexmeasurements for
leaf area indexcrown densityforest understory vegetaiton
Plot scale researchtree densityleaf areabiomass
CO2 flux obs.
Climate model
Ecosystem model
vegetation typebiomassLAIphotosynthesis
Plant growth(CO2 uptake)
Canopy spectral reflectance
Spatial and temporal analyses on the structure and function of regional ecosystems
• Carbon budget• Hydrology• Vegetation dynamics• Influence of human activity
Spatial distributionTemporal change
Ecology –Remote sensing
Ecology –MicrometeorologyLeaf physiology
biochemistryoptical propoerty
EcologyRemote sensingMicrometeorology
Linking processes and integrationLinking processes and integration
ReRe--classify vegetation types to classify vegetation types to ‘‘functional typesfunctional types’’detailed vegetation/land-use type map
ecosystem ‘functional type’ map
Spatial and seasonal distribution of LAISpatial and seasonal distribution of LAI
Re-check of quality-controlled MODIS data
LAI at Takayama siteNDVI
LAI
DOY 321-329
DOY 225-233
DOY 129-137
Original map of LAI(100m resolution)
re-checked
MOD15
SATECOmodelSATECOmodel outputs (early Aug, 2002)outputs (early Aug, 2002)
LAI (m2 m-2)
GPP (mmol CO2 m-2 s-1)Tair (K)
Radiation (W m-2)
(100m resolution, every 1-hr)
SATECOmodelSATECOmodel outputsoutputs
LAI(leaf area index)
GPP(gross photosynthesis)
Rsoil(soil respiration)
Mar.
May
Jul.
Sep.
(m2 m-2) (μmol CO2 m-2 s-1) (μmol CO2 m-2 s-1)
Mar.
May
Jul.
Sep.
Mar.
May
Jul.
Sep.
SATECOmodelSATECOmodel vs. MOD17vs. MOD17
Ecosystem, landscape and regional scale photosynthesis should be estimated carefully, considering the spatinal and temporal variations in the processes.
MOD17 (2006 DOY177) 1 km resolution
Vegetation / land-use distribution
SATECO (2002 DOY184) 100m resolution
(μmolCO2 /m2/s)
SATECOmodelSATECOmodel for central Japanfor central Japan
(3km resolution, every 1-hr)
TopicsTopics
Introduction
Carbon cycling study in a cool-temperate forest.- Combining ecological process research and CO2 flux obs.
in “Takayama site”, central Japan.
Scaling carbon budget processes from plot to landscape.- “Satellite Ecology”: an interdisciplinary approch forfine- spatial and temporal resolution estimates.
Networking for future research and education.Networking for future research and education.
Synthesis of ecosystem observation concepts, systems, etc.- why and how do we try and proceed? (Concepts)- how can we achieve? (Methodology)- how do we continue? (Education and Fund)- where do we proceed? (Super-site concept)
Collaborations with international networks- FLUXNET- LTER (Long Term Ecological Research Network)- and other plans
Sharing knowledge with other research communities- Manipulating experiments (FACE, etc.)- Plant and soil microbial physiology- Environmental engineering- Environmental economy
Toward more integration and progress in ecosystem scienceToward more integration and progress in ecosystem science
TakayamaTakayama supersuper--site to bridge research communitiessite to bridge research communities
http://www.asiaflux.net/
JapanFluxJapanFlux
JaLTERJaLTER
FLUXNETFLUXNET
LTERLTER(Long Term Ecological Research network)
A3 Foresight Program (JSPS, NSFC, KOSEF)A3 Foresight Program (JSPS, NSFC, KOSEF)““Quantifying and predicting terrestrial carbon sinks in East AsiaQuantifying and predicting terrestrial carbon sinks in East Asia: :
toward a network of climate change researchtoward a network of climate change research””
【Common research theme and responsibility sharing】
AcknowledgementsAcknowledgements
T.M. SaitohT.M. Saitoh11, J. Yoshino, J. Yoshino22, S. Nagai, S. Nagai11, M. Ishihara, M. Ishihara11, K.N. Nasahara, K.N. Nasahara1,31,3, , T. OhtsukaT. Ohtsuka11, A.M. Kishimoto, A.M. Kishimoto44, M, M--S. LeeS. Lee11, N. Saigusa, N. Saigusa55, S. Murayama, S. Murayama55, H. Kondo, H. Kondo55,,H. NodaH. Noda11, T. Kojima, T. Kojima11, I. Tamagawa, I. Tamagawa11, T. Akiyama, T. Akiyama11, T. Yasuda, T. Yasuda22, S. Yamamoto, S. Yamamoto66, , H. KoizumiH. Koizumi7 7 and other students in Gifu Univ. and Univ. Tsukubaand other students in Gifu Univ. and Univ. Tsukuba
1 River Basin Research Center, Gifu University2 Graduate School of Engineering, Gifu University3 Institute of Agricultural and Forest Engineering, University of Tsukuba4 National Institute of Agro-Environmental Sciences5 National Institute of Advanced Industrial Sciences and Technology (AIST)6 Okayama University7 Department of Biology, Waseda University
Activities in Activities in TakayamaTakayama site have been funded bysite have been funded byGlobal Environmental Research Fund SGlobal Environmental Research Fund S--1 (Ministry of the Environment)1 (Ministry of the Environment)2121stst Century COE Program Century COE Program ““Satellite EcologySatellite Ecology”” (JSPS, Gifu University)(JSPS, Gifu University)A3 Foresight Program (JSPS, NSFC and KOSEF)A3 Foresight Program (JSPS, NSFC and KOSEF)