Local spatial structure of forest biomass and its consequences for remote sensing of carbon stocks

M. Rejou-Mechain; H. C. Muller-Landau; M. Detto; S. C. Thomas; T. Le Toan; S. S. Saatchi; J. S. Barreto-Silva; N. A. Bourg; S. Bunyavejchewin; N. Butt; W. Y. Brockelman; M. Cao; D. Cardenas; J. -M. Chiang; G. B. Chuyong; K. Clay; R. Condit; H. S. Dattaraja; S. J. Davies; A. Duque; S. Esufali; C. Ewango; R. H. S. Fernando; C. D. Fletcher; I. A. U. N. Gunatilleke; Z. Hao; K. E. Harms; T. B. Hart; B. Herault; R. W. Howe; S. P. Hubbell; D. J. Johnson; D. Kenfack; A. J. Larson; L. Lin; Y. Lin; J. A. Lutz; J. -R. Makana; Y. Malhi; T. R. Marthews; R. W. McEwan; S. M. McMahon; W. J. McShea; R. Muscarella; A. Nathalang; N. S. M. Noor; C. J. Nytch; A. A. Oliveira; R. P. Phillips; N. Pongpattananurak; R. Punchi-Manage; R. Salim; J. Schurman; R. Sukumar; H. S. Suresh; U. Suwanvecho; D. W. Thomas; J. Thompson; M. Uriarte; R. Valencia; A. Vicentini; A. T. Wolf; S. Yap; Z. Yuan; C. E. Zartman; J. K. Zimmerman; J. Chave

doi:10.5194/bg-11-6827-2014

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Local spatial structure of forest biomass and its consequences for remote sensing of carbon stocks

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Local spatial structure of forest biomass and its consequences for remote sensing of carbon stocks

M. Rejou-Mechain, H. C. Muller-Landau, M. Detto, S. C. Thomas, T. Le Toan, S. S. Saatchi, J. S. Barreto-Silva, N. A. Bourg, S. Bunyavejchewin, N. Butt, …

Biogeosciences, Vol.11(23), pp.6827-6840

08/12/2014

DOI: https://doi.org/10.5194/bg-11-6827-2014

Résumé

Ecology

Environmental Sciences & Ecology

Geology

Geosciences, Multidisciplinary

Life Sciences & Biomedicine

Physical Sciences

Science & Technology

Advances in forest carbon mapping have the potential to greatly reduce uncertainties in the global carbon budget and to facilitate effective emissions mitigation strategies such as REDD+ (Reducing Emissions from Deforestation and Forest Degradation). Though broad-scale mapping is based primarily on remote sensing data, the accuracy of resulting forest carbon stock estimates depends critically on the quality of field measurements and calibration procedures. The mismatch in spatial scales between field inventory plots and larger pixels of current and planned remote sensing products for forest biomass mapping is of particular concern, as it has the potential to introduce errors, especially if forest biomass shows strong local spatial variation. Here, we used 30 large (8-50 ha) globally distributed permanent forest plots to quantify the spatial variability in aboveground biomass density (AGBD in Mgha(-1)) at spatial scales ranging from 5 to 250m (0.025-6.25 ha), and to evaluate the implications of this variability for calibrating remote sensing products using simulated remote sensing footprints. We found that local spatial variability in AGBD is large for standard plot sizes, averaging 46.3% for replicate 0.1 ha subplots within a single large plot, and 16.6% for 1 ha subplots. AGBD showed weak spatial autocorrelation at distances of 20-400 m, with autocorrelation higher in sites with higher topographic variability and statistically significant in half of the sites. We further show that when field calibration plots are smaller than the remote sensing pixels, the high local spatial variability in AGBD leads to a substantial "dilution" bias in calibration parameters, a bias that cannot be removed with standard statistical methods. Our results suggest that topography should be explicitly accounted for in future sampling strategies and that much care must be taken in designing calibration schemes if remote sensing of forest carbon is to achieve its promise.

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Titre: Local spatial structure of forest biomass and its consequences for remote sensing of carbon stocks
Créateurs - sans rôle: M. Rejou-Mechain - Univ Toulouse 3, Lab Evolut & Divers Biol, UMR5174, CNRS, F-31062 Toulouse, France
H. C. Muller-Landau - Smithsonian Trop Res Inst, Balboa 084303092, Ancon, Panama
M. Detto - Smithsonian Trop Res Inst, Balboa 084303092, Ancon, Panama
S. C. Thomas - Univ Toronto, Fac Forestry, Toronto, ON, Canada
T. Le Toan - Univ Toulouse 3, IRD, CNES, Ctr Etudes Spatiales Biosphere,CNRS,UMR5126, F-31401 Toulouse, France
S. S. Saatchi - CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA
J. S. Barreto-Silva - Inst Amazon Invest Cientif SINCHI, Leticia, Amazonas, Colombia
N. A. Bourg - Conservat Ecol Ctr, Smithsonian Conservat Biol Inst, Front Royal, VA 22630 USA
S. Bunyavejchewin - Res Off, Natl Pk Wildlife & Plant Conservat Dept, Bangkok 10900, Thailand
N. Butt - Univ Oxford, Sch Geog & Environm, Environm Change Inst, Oxford OX1 3QY, England
W. Y. Brockelman - Ecol Lab, Bioresources Technol Unit, Khlongluang 12120, Pathum Thani, Thailand
M. Cao - Chinese Acad Sci, Xishuangbanna Trop Bot Garden, Key Lab Trop Forest Ecol, Kunming 650223, Peoples R China
D. Cardenas - Inst Amazon Invest Cientif SINCHI, Bogota, Colombia
J. -M. Chiang - Tunghai Univ, Dept Life Sci, Taichung 40704, Taiwan
G. B. Chuyong - University of Buea
K. Clay - Indiana Univ, Dept Biol, Bloomington, IN 47405 USA
R. Condit - Smithsonian Trop Res Inst, Balboa 084303092, Ancon, Panama
H. S. Dattaraja - Indian Inst Sci, Ctr Ecol Sci, Bangalore 560012, Karnataka, India
S. J. Davies - Smithsonian Trop Res Inst, Smithsonian Inst Global Earth Observ, Ctr Trop Forest Sci, Washington, DC 20012 USA
A. Duque - Univ Nacl Colombia, Dept Ciencias Forest, Medellin, Colombia
S. Esufali - Univ Peradeniya, Fac Sci, Dept Bot, Peradeniya, Sri Lanka
C. Ewango - Ctr Format & Rech Conservat Forestiere CEFRECOF, Wildlife Conservat Soc, Kinshasa, DEM REP CONGO
R. H. S. Fernando - Royal Bot Garden, Peradeniya, Sri Lanka
C. D. Fletcher - Forest Res Inst Malaysia FRIM, Kepong 52109, Selangor, Malaysia
I. A. U. N. Gunatilleke - Univ Peradeniya, Fac Sci, Dept Bot, Peradeniya, Sri Lanka
Z. Hao - Chinese Acad Sci, Inst Appl Ecol, State Key Lab Forest & Soil Ecol, Shenyang 110164, Peoples R China
K. E. Harms - Louisiana State Univ, Dept Biol Sci, Baton Rouge, LA 70803 USA
T. B. Hart - Project TL2, Kinshasa, DEM REP CONGO
B. Herault - Cirad, UMR Ecol Forets Guyane EcoFoG, Kourou 97310, French Guiana
R. W. Howe - University of Wisconsin–Green Bay
S. P. Hubbell - Smithsonian Trop Res Inst, Balboa 084303092, Ancon, Panama
D. J. Johnson - Indiana Univ, Dept Biol, Bloomington, IN 47405 USA
D. Kenfack - Harvard Univ, CTFS Arnold Arboretum Off, Cambridge, MA 02138 USA
A. J. Larson - Univ Montana, Coll Forestry & Conservat, Dept Forest Management, Missoula, MT 59812 USA
L. Lin - Chinese Acad Sci, Xishuangbanna Trop Bot Garden, Key Lab Trop Forest Ecol, Kunming 650223, Peoples R China
Y. Lin - Tunghai Univ, Dept Life Sci, Taichung 40704, Taiwan
J. A. Lutz - Utah State Univ, Wildland Resources Dept, Logan, UT 84322 USA
J. -R. Makana - Wildlife Conservat Soc, DRC Program, Kinshasa, DEM REP CONGO
Y. Malhi - University of Oxford
T. R. Marthews - Univ Oxford, Sch Geog & Environm, Environm Change Inst, Oxford OX1 3QY, England
R. W. McEwan - Univ Dayton, Dept Biol, Dayton, OH 45469 USA
S. M. McMahon - Smithsonian Institution
W. J. McShea - Conservat Ecol Ctr, Smithsonian Conservat Biol Inst, Front Royal, VA 22630 USA
R. Muscarella - Columbia Univ, Dept Ecol Evolut & Environm Biol, New York, NY USA
A. Nathalang - Ecol Lab, Bioresources Technol Unit, Khlongluang 12120, Pathum Thani, Thailand
N. S. M. Noor - Forest Res Inst Malaysia FRIM, Kepong 52109, Selangor, Malaysia
C. J. Nytch - Univ Puerto Rico, Dept Environm Sci, San Juan, PR 00936 USA
A. A. Oliveira - Univ Sao Paulo, Inst Biociencias, Dept Ecol, BR-04582050 Sao Paulo, Brazil
R. P. Phillips - Indiana Univ, Dept Biol, Bloomington, IN 47405 USA
N. Pongpattananurak - Kasetsart Univ, Fac Forestry, Dept Conservat, Bangkok, Thailand
R. Punchi-Manage - Univ Gottingen, Dept Ecosyst Modelling, D-37073 Gottingen, Germany
R. Salim - Forest Res Inst Malaysia FRIM, Kepong 52109, Selangor, Malaysia
J. Schurman - Univ Toronto, Fac Forestry, Toronto, ON, Canada
R. Sukumar - Indian Inst Sci, Ctr Ecol Sci, Bangalore 560012, Karnataka, India
H. S. Suresh - Indian Inst Sci, Ctr Ecol Sci, Bangalore 560012, Karnataka, India
U. Suwanvecho - Ecol Lab, Bioresources Technol Unit, Khlongluang 12120, Pathum Thani, Thailand
D. W. Thomas - Oregon State Univ, Dept Bot & Plant Pathol, Corvallis, OR 97331 USA
J. Thompson - Univ Puerto Rico, Dept Environm Sci, San Juan, PR 00936 USA
M. Uriarte - Columbia Univ, Dept Ecol Evolut & Environm Biol, New York, NY USA
R. Valencia - Pontificia Univ Catolica Ecuador, Escuela Ciencias Biol, Quito, Ecuador
A. Vicentini - Inst Nacl de Pesquisas da Amazonia, Manaus, Amazonas, Brazil
A. T. Wolf - Univ Wisconsin, Dept Nat & Appl Sci, Green Bay, WI 54311 USA
S. Yap - Univ Philippines Diliman, Inst Biol, Quezon City 1101, Philippines
Z. Yuan - Chinese Acad Sci, Inst Appl Ecol, State Key Lab Forest & Soil Ecol, Shenyang 110164, Peoples R China
C. E. Zartman - Inst Nacl de Pesquisas da Amazonia, Manaus, Amazonas, Brazil
J. K. Zimmerman - Univ Puerto Rico, Dept Environm Sci, San Juan, PR 00936 USA
J. Chave - Univ Toulouse 3, Lab Evolut & Divers Biol, UMR5174, CNRS, F-31062 Toulouse, France
Détails de publication: Biogeosciences, Vol.11(23), pp.6827-6840
Éditeur: Copernicus Gesellschaft Mbh
Nombre de pages: 14
Note de subvention: EU FP7 through the ROBIN project; European Union (EU) central office of the Amacayacu National Natural Park of Colombia 1046113; 1239764 / Direct For Biological Sciences; Division Of Environmental Biology; National Science Foundation (NSF); NSF - Directorate for Biological Sciences (BIO) 1354741 / Direct For Biological Sciences; Division Of Environmental Biology; National Science Foundation (NSF); NSF - Directorate for Biological Sciences (BIO) NSF; National Science Foundation (NSF) CNES; Centre National D'etudes Spatiales 1046113 / National Science Foundation (DEB); National Science Foundation (NSF)
Identifiants: 99135041709311
Unité académique: BotAnique et Modélisation de l'Architecture des Plantes et des végétations - AMAP
Langue: English
Type de ressource: Journal article