Using imaging spectroscopy to detect variation in terrestrial ecosystem productivity across a water-stressed landscape

DuBois, Sean; Desai, Ankur R.; Singh, Aditya; Serbin, Shawn P.; Goulden, Michael L.; Baldocchi, Dennis D.; Ma, Siyan; Oechel, Walter C.; Wharton, Sonia; Kruger, Eric L.; Townsend, Philip A.

doi:10.1002/eap.1733

Using imaging spectroscopy to detect variation in terrestrial ecosystem productivity across a water-stressed landscape

Journal Article · Wed May 23 04:00:00 EDT 2018 · Ecological Applications

DOI:https://doi.org/10.1002/eap.1733· OSTI ID:1464103

DuBois, Sean ^[1]; Desai, Ankur R. ^[2]; Singh, Aditya ^[3]; ^[4]; Goulden, Michael L. ^[5]; Baldocchi, Dennis D. ^[6]; Ma, Siyan ^[6]; Oechel, Walter C. ^[7]; Wharton, Sonia ^[8]; Kruger, Eric L. ^[9]; Townsend, Philip A. ^[9]

ICF Inc., Fairfax, VA (United States); Univ. of Wisconsin, Madison, WI (United States). Dept. of Forest and Wildlife Ecology and Dept. of Atmospheric and Oceanic Sciences
Univ. of Wisconsin, Madison, WI (United States). Dept. of Atmospheric and Oceanic Sciences
Univ. of Wisconsin, Madison, WI (United States). Dept. of Forest and Wildlife Ecology; Univ. of Florida, Gainesville, FL (United States). Dept. of Agricultural and Biological Engineering
Brookhaven National Lab. (BNL), Upton, NY (United States). Environment and Climate Sciences Dept.
Univ. of California, Irvine, CA (United States). Dept. of Earth System Science
Univ. of California, Berkeley, CA (United States). Dept. of Environmental Science, Policy, and Mangement
San Diego State Univ., San Diego, CA (United States). Dept. of Biology; Univ. of Exeter (United Kingdom). Dept. of Geography
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States). Atmospheric, Earth and Energy Division
Univ. of Wisconsin, Madison, WI (United States). Dept. of Forest and Wildlife Ecology

A central challenge to understanding how climate anomalies, such as drought and heatwaves, impact the terrestrial carbon cycle, is quantification and scaling of spatial and temporal variation in ecosystem gross primary productivity (GPP). Existing empirical and model-based satellite broadband spectra-based products have been shown to miss critical variation in GPP. We evaluate the potential of high spectral resolution (10 nm) shortwave (400–2,500 nm) imagery to better detect spatial and temporal variations in GPP across a range of ecosystems, including forests, grassland-savannas, wetlands, and shrublands in a water-stressed region. Estimates of GPP from eddy covariance observations were compared against airborne hyperspectral imagery, collected across California during the 2013–2014 HyspIRI airborne preparatory campaign. Observations from 19 flux towers across 23 flight campaigns (102 total image-flux tower pairs) showed GPP to be strongly correlated to a suite of spectral wavelengths and band ratios associated with foliar physiology and chemistry. A partial least squares regression (PLSR) modeling approach was then used to predict GPP with higher validation accuracy (adjusted R² = 0.71) and low bias (0.04) compared to existing broadband approaches (e.g., adjusted R² = 0.68 and bias = -5.71 with the Sims et al. model). Significant wavelengths contributing to the PLSR include those previously shown to coincide with Rubisco (wavelengths 1,680, 1,740, and 2,290 nm) and V_cmax (wavelengths 1,680, 1,722, 1,732, 1,760, and 2,300 nm). These results provide strong evidence that advances in satellite spectral resolution offer significant promise for improved satellite-based monitoring of GPP variability across a diverse range of terrestrial ecosystems.

View Accepted Manuscript (DOE)

Research Organization:: Brookhaven National Laboratory (BNL), Upton, NY (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23). Climate and Environmental Sciences Division; National Aeronautic and Space Administration (NASA)

Grant/Contract Number:: SC0012704

OSTI ID:: 1464103

Alternate ID(s):: OSTI ID: 1466134

Report Number(s):: BNL--207950-2018-JAAM

Journal Information:: Ecological Applications, Journal Name: Ecological Applications Journal Issue: 5 Vol. 28; ISSN 1051-0761

Publisher:: Ecological Society of AmericaCopyright Statement

Country of Publication:: United States

Language:: English

References (69)

The photochemical reflectance index: an optical indicator of photosynthetic radiation use efficiency across species, functional types, and nutrient levels Gamon, J. A.; Serrano, L.; Surfus, J. S. Oecologia, Vol. 112, Issue 4 https://doi.org/10.1007/s004420050337	journal	November 1997
Net Primary Production and Canopy Nitrogen in a Temperate Forest Landscape: An Analysis Using Imaging Spectroscopy, Modeling and Field Data Ollinger, Scott V.; Smith, Marie-Louise Ecosystems, Vol. 8, Issue 7 https://doi.org/10.1007/s10021-005-0079-5	journal	October 2005
Partial least-squares regression: a tutorial Geladi, Paul; Kowalski, Bruce R. Analytica Chimica Acta, Vol. 185 https://doi.org/10.1016/0003-2670(86)80028-9	journal	January 1986
Red and photographic infrared linear combinations for monitoring vegetation Tucker, Compton J. Remote Sensing of Environment, Vol. 8, Issue 2 https://doi.org/10.1016/0034-4257(79)90013-0	journal	May 1979
Remote sensing of foliar chemistry Curran, Paul J. Remote Sensing of Environment, Vol. 30, Issue 3 https://doi.org/10.1016/0034-4257(89)90069-2	journal	December 1989
A narrow-waveband spectral index that tracks diurnal changes in photosynthetic efficiency Gamon, J. A.; Peñuelas, J.; Field, C. B. Remote Sensing of Environment, Vol. 41, Issue 1 https://doi.org/10.1016/0034-4257(92)90059-S	journal	July 1992
The airborne visible/infrared imaging spectrometer (AVIRIS) Vane, Gregg; Green, Robert O.; Chrien, Thomas G. Remote Sensing of Environment, Vol. 44, Issue 2-3 https://doi.org/10.1016/0034-4257(93)90012-M	journal	May 1993
Critique of stepwise multiple linear regression for the extraction of leaf biochemistry information from leaf reflectance data Grossman, Y. L.; Ustin, S. L.; Jacquemoud, S. Remote Sensing of Environment, Vol. 56, Issue 3 https://doi.org/10.1016/0034-4257(95)00235-9	journal	June 1996
The MODIS/ASTER airborne simulator (MASTER) — a new instrument for earth science studies Hook, Simon J.; Myers, Jeffrey J.; Thome, Kurtis J. Remote Sensing of Environment, Vol. 76, Issue 1 https://doi.org/10.1016/S0034-4257(00)00195-4	journal	April 2001
Global products of vegetation leaf area and fraction absorbed PAR from year one of MODIS data Myneni, R. B.; Hoffman, S.; Knyazikhin, Y. Remote Sensing of Environment, Vol. 83, Issue 1-2 https://doi.org/10.1016/S0034-4257(02)00074-3	journal	November 2002
On the relation between NDVI, fractional vegetation cover, and leaf area index Carlson, Toby N.; Ripley, David A. Remote Sensing of Environment, Vol. 62, Issue 3 https://doi.org/10.1016/S0034-4257(97)00104-1	journal	December 1997
Imaging Spectroscopy and the Airborne Visible/Infrared Imaging Spectrometer (AVIRIS) Green, Robert O.; Eastwood, Michael L.; Sarture, Charles M. Remote Sensing of Environment, Vol. 65, Issue 3 https://doi.org/10.1016/S0034-4257(98)00064-9	journal	September 1998
Gap filling strategies for defensible annual sums of net ecosystem exchange Falge, Eva; Baldocchi, Dennis; Olson, Richard Agricultural and Forest Meteorology, Vol. 107, Issue 1 https://doi.org/10.1016/S0168-1923(00)00225-2	journal	March 2001
PLS-regression: a basic tool of chemometrics Wold, Svante; Sjöström, Michael; Eriksson, Lennart Chemometrics and Intelligent Laboratory Systems, Vol. 58, Issue 2 https://doi.org/10.1016/S0169-7439(01)00155-1	journal	October 2001
Signature Analysis of Leaf Reflectance Spectra: Algorithm Development for Remote Sensing of Chlorophyll Gitelson, Anatoly A.; Merzlyak, Mark N. Journal of Plant Physiology, Vol. 148, Issue 3-4 https://doi.org/10.1016/S0176-1617(96)80284-7	journal	January 1996
Carbon exchange and venting anomalies in an upland deciduous forest in northern Wisconsin, USA Cook, Bruce D.; Davis, Kenneth J.; Wang, Weiguo Agricultural and Forest Meteorology, Vol. 126, Issue 3-4 https://doi.org/10.1016/j.agrformet.2004.06.008	journal	November 2004
Comparing net ecosystem exchange of carbon dioxide between an old-growth and mature forest in the upper Midwest, USA Desai, Ankur R.; Bolstad, Paul V.; Cook, Bruce D. Agricultural and Forest Meteorology, Vol. 128, Issue 1-2 https://doi.org/10.1016/j.agrformet.2004.09.005	journal	January 2005
Cross-site evaluation of eddy covariance GPP and RE decomposition techniques Desai, Ankur R.; Richardson, Andrew D.; Moffat, Antje M. Agricultural and Forest Meteorology, Vol. 148, Issue 6-7 https://doi.org/10.1016/j.agrformet.2007.11.012	journal	June 2008
Testing the performance of a novel spectral reflectance sensor, built with light emitting diodes (LEDs), to monitor ecosystem metabolism, structure and function Ryu, Youngryel; Baldocchi, Dennis D.; Verfaillie, Joseph Agricultural and Forest Meteorology, Vol. 150, Issue 12 https://doi.org/10.1016/j.agrformet.2010.08.009	journal	December 2010
Modeling energy and carbon fluxes in a heterogeneous oak woodland: A three-dimensional approach Kobayashi, Hideki; Baldocchi, Dennis D.; Ryu, Youngryel Agricultural and Forest Meteorology, Vol. 152 https://doi.org/10.1016/j.agrformet.2011.09.008	journal	January 2012
Does day and night sampling reduce spurious correlation between canopy photosynthesis and ecosystem respiration? Baldocchi, Dennis; Sturtevant, Cove; Contributors, Fluxnet Agricultural and Forest Meteorology, Vol. 207 https://doi.org/10.1016/j.agrformet.2015.03.010	journal	July 2015
Upscaling tower-observed turbulent exchange at fine spatio-temporal resolution using environmental response functions Xu, Ke; Metzger, Stefan; Desai, Ankur R. Agricultural and Forest Meteorology, Vol. 232 https://doi.org/10.1016/j.agrformet.2016.07.019	journal	January 2017
Retrieval of seasonal Rubisco-limited photosynthetic capacity at global FLUXNET sites from hyperspectral satellite remote sensing: Impact on carbon modelling Alton, Paul B. Agricultural and Forest Meteorology, Vol. 232 https://doi.org/10.1016/j.agrformet.2016.08.001	journal	January 2017
Brightness-normalized Partial Least Squares Regression for hyperspectral data Feilhauer, Hannes; Asner, Gregory P.; Martin, Roberta E. Journal of Quantitative Spectroscopy and Radiative Transfer, Vol. 111, Issue 12-13 https://doi.org/10.1016/j.jqsrt.2010.03.007	journal	August 2010
Normalized difference spectral indices for estimating photosynthetic efficiency and capacity at a canopy scale derived from hyperspectral and CO2 flux measurements in rice Inoue, Y.; Penuelas, J.; Miyata, A. Remote Sensing of Environment, Vol. 112, Issue 1 https://doi.org/10.1016/j.rse.2007.04.011	journal	January 2008
A new model of gross primary productivity for North American ecosystems based solely on the enhanced vegetation index and land surface temperature from MODIS Sims, D.; Rahman, A.; Cordova, V. Remote Sensing of Environment, Vol. 112, Issue 4 https://doi.org/10.1016/j.rse.2007.08.004	journal	April 2008
A generalizable method for remote sensing of canopy nitrogen across a wide range of forest ecosystems Martin, M. E.; Plourde, L. C.; Ollinger, S. V. Remote Sensing of Environment, Vol. 112, Issue 9 https://doi.org/10.1016/j.rse.2008.04.008	journal	September 2008
Spectral and chemical analysis of tropical forests: Scaling from leaf to canopy levels Asner, G.; Martin, R. Remote Sensing of Environment, Vol. 112, Issue 10 https://doi.org/10.1016/j.rse.2008.07.003	journal	October 2008
Remote sensing of the distribution and abundance of host species for spruce budworm in Northern Minnesota and Ontario Wolter, P.; Townsend, P.; Sturtevant, B. Remote Sensing of Environment, Vol. 112, Issue 10 https://doi.org/10.1016/j.rse.2008.07.005	journal	October 2008
Retrieval of foliar information about plant pigment systems from high resolution spectroscopy Ustin, Susan L.; Gitelson, A. A.; Jacquemoud, Stéphane Remote Sensing of Environment, Vol. 113 https://doi.org/10.1016/j.rse.2008.10.019	journal	September 2009
The photochemical reflectance index (PRI) and the remote sensing of leaf, canopy and ecosystem radiation use efficienciesA review and meta-analysis Garbulsky, Martín F.; Peñuelas, Josep; Gamon, John Remote Sensing of Environment, Vol. 115, Issue 2 https://doi.org/10.1016/j.rse.2010.08.023	journal	February 2011
Spectroscopy of canopy chemicals in humid tropical forests Asner, Gregory P.; Martin, Roberta E.; Knapp, David E. Remote Sensing of Environment, Vol. 115, Issue 12 https://doi.org/10.1016/j.rse.2011.08.020	journal	December 2011
Atmospheric correction for global mapping spectroscopy: ATREM advances for the HyspIRI preparatory campaign Thompson, David R.; Gao, Bo-Cai; Green, Robert O. Remote Sensing of Environment, Vol. 167 https://doi.org/10.1016/j.rse.2015.02.010	journal	September 2015
Remotely estimating photosynthetic capacity, and its response to temperature, in vegetation canopies using imaging spectroscopy Serbin, Shawn P.; Singh, Aditya; Desai, Ankur R. Remote Sensing of Environment, Vol. 167 https://doi.org/10.1016/j.rse.2015.05.024	journal	September 2015
Special issue on the Hyperspectral Infrared Imager (HyspIRI): Emerging science in terrestrial and aquatic ecology, radiation balance and hazards Hochberg, Eric J.; Roberts, Dar A.; Dennison, Philip E. Remote Sensing of Environment, Vol. 167 https://doi.org/10.1016/j.rse.2015.06.011	journal	September 2015
An introduction to the NASA Hyperspectral InfraRed Imager (HyspIRI) mission and preparatory activities Lee, Christine M.; Cable, Morgan L.; Hook, Simon J. Remote Sensing of Environment, Vol. 167 https://doi.org/10.1016/j.rse.2015.06.012	journal	September 2015
Global patterns of land-atmosphere fluxes of carbon dioxide, latent heat, and sensible heat derived from eddy covariance, satellite, and meteorological observations Jung, Martin; Reichstein, Markus; Margolis, Hank A. Journal of Geophysical Research, Vol. 116 https://doi.org/10.1029/2010JG001566	journal	January 2011
Evapotranspiration along an elevation gradient in California's Sierra Nevada: SIERRA NEVADA EVAPOTRANSPIRATION Goulden, M. L.; Anderson, R. G.; Bales, R. C. Journal of Geophysical Research: Biogeosciences, Vol. 117, Issue G3 https://doi.org/10.1029/2012JG002027	journal	September 2012
A bidirectional reflectance model of the Earth's surface for the correction of remote sensing data Roujean, Jean-Louis; Leroy, Marc; Deschamps, Pierre-Yves Journal of Geophysical Research, Vol. 97, Issue D18 https://doi.org/10.1029/92JD01411	journal	January 1992
Europe-wide reduction in primary productivity caused by the heat and drought in 2003 Ciais, Ph.; Reichstein, M.; Viovy, N. Nature, Vol. 437, Issue 7058 https://doi.org/10.1038/nature03972	journal	September 2005
Monitoring plant functional diversity from space Jetz, Walter; Cavender-Bares, Jeannine; Pavlick, Ryan Nature Plants, Vol. 2, Issue 3 https://doi.org/10.1038/nplants.2016.24	journal	March 2016
Rapid shifts in plant distribution with recent climate change Kelly, A. E.; Goulden, M. L. Proceedings of the National Academy of Sciences, Vol. 105, Issue 33 https://doi.org/10.1073/pnas.0802891105	journal	August 2008
Progressive forest canopy water loss during the 2012–2015 California drought Asner, Gregory P.; Brodrick, Philip G.; Anderson, Christopher B. Proceedings of the National Academy of Sciences, Vol. 113, Issue 2 https://doi.org/10.1073/pnas.1523397113	journal	December 2015
Visible and near infrared reflectance characteristics of dry plant materials Elvidge, Christopher D. International Journal of Remote Sensing, Vol. 11, Issue 10 https://doi.org/10.1080/01431169008955129	journal	October 1990
Red edge spectral measurements from sugar maple leaves Vogelmann, J. E.; Rock, B. N.; Moss, D. M. International Journal of Remote Sensing, Vol. 14, Issue 8 https://doi.org/10.1080/01431169308953986	journal	May 1993
Leaf optical properties reflect variation in photosynthetic metabolism and its sensitivity to temperature Serbin, Shawn P.; Dillaway, Dylan N.; Kruger, Eric L. Journal of Experimental Botany, Vol. 63, Issue 1 https://doi.org/10.1093/jxb/err294	journal	October 2011
An algorithm for the retrieval of albedo from space using semiempirical BRDF models Lucht, W.; Schaaf, C. B.; Strahler, A. H. IEEE Transactions on Geoscience and Remote Sensing, Vol. 38, Issue 2 https://doi.org/10.1109/36.841980	journal	March 2000
Scaling-up and model inversion methods with narrowband optical indices for chlorophyll content estimation in closed forest canopies with hyperspectral data Zarco-Tejada, P. J.; Miller, J. R.; Noland, T. L. IEEE Transactions on Geoscience and Remote Sensing, Vol. 39, Issue 7 https://doi.org/10.1109/36.934080	journal	July 2001
Application of imaging spectroscopy to mapping canopy nitrogen in the forests of the central appalachian mountains using hyperion and aviris Townsend, P. A.; Foster, J. R.; Chastain, R. A. IEEE Transactions on Geoscience and Remote Sensing, Vol. 41, Issue 6 https://doi.org/10.1109/TGRS.2003.813205	journal	June 2003
SCS+C: a modified Sun-canopy-sensor topographic correction in forested terrain Soenen, S. A.; Peddle, D. R.; Coburn, C. A. IEEE Transactions on Geoscience and Remote Sensing, Vol. 43, Issue 9 https://doi.org/10.1109/TGRS.2005.852480	journal	September 2005
Evaluation of remote sensing based terrestrial productivity from MODIS using regional tower eddy flux network observations Heinsch, F. A.; Running, S. W. IEEE Transactions on Geoscience and Remote Sensing, Vol. 44, Issue 7 https://doi.org/10.1109/TGRS.2005.853936	journal	July 2006
Observing terrestrial ecosystems and the carbon cycle from space Schimel, David; Pavlick, Ryan; Fisher, Joshua B. Global Change Biology, Vol. 21, Issue 5 https://doi.org/10.1111/gcb.12822	journal	February 2015
An eddy covariance mesonet to measure the effect of forest age on land?atmosphere exchange Goulden, Michael L.; Winston, Gregory C.; McMILLAN, Andrew M. S. Global Change Biology, Vol. 12, Issue 11 https://doi.org/10.1111/j.1365-2486.2006.01251.x	journal	November 2006
Assessment of photosynthetic radiation-use efficiency with spectral reflectance Penuelas, Josep; Filella, Iolanda; Gamon, John A. New Phytologist, Vol. 131, Issue 3 https://doi.org/10.1111/j.1469-8137.1995.tb03064.x	journal	November 1995
Remote sensing of plant functional types: Tansley review Ustin, Susan L.; Gamon, John A. New Phytologist, Vol. 186, Issue 4 https://doi.org/10.1111/j.1469-8137.2010.03284.x	journal	May 2010
Sources of variability in canopy reflectance and the convergent properties of plants: Tansley review Ollinger, S. V. New Phytologist, Vol. 189, Issue 2 https://doi.org/10.1111/j.1469-8137.2010.03536.x	journal	November 2010
Partial least squares regression as an alternative to current regression methods used in ecology Carrascal, Luis M.; Galván, Ismael; Gordo, Oscar Oikos, Vol. 118, Issue 5 https://doi.org/10.1111/j.1600-0706.2008.16881.x	journal	May 2009
Carnegie Airborne Observatory: in-flight fusion of hyperspectral imaging and waveform light detection and ranging for three-dimensional studies of ecosystems Asner, Gregory P. Journal of Applied Remote Sensing, Vol. 1, Issue 1 https://doi.org/10.1117/1.2794018	journal	January 2007
A Continuous Satellite-Derived Measure of Global Terrestrial Primary Production Running, Steven W.; Nemani, Ramakrishna R.; Heinsch, Faith Ann BioScience, Vol. 54, Issue 6 https://doi.org/10.1641/0006-3568(2004)054[0547:ACSMOG]2.0.CO;2	journal	January 2004
High Spectral Resolution Remote Sensing of Forest Canopy Lignin, Nitrogen, and Ecosystem Processes Martin, Mary E.; Aber, John D. Ecological Applications, Vol. 7, Issue 2 https://doi.org/10.1890/1051-0761(1997)007[0431:HSRRSO]2.0.CO;2	journal	May 1997
Direct Estimation of Aboveground Forest Productivity Through Hyperspectral Remote Sensing of Canopy Nitrogen Smith, Marie-Louise; Ollinger, Scott V.; Martin, Mary E. Ecological Applications, Vol. 12, Issue 5 https://doi.org/10.1890/1051-0761(2002)012[1286:DEOAFP]2.0.CO;2	journal	October 2002
Imaging spectroscopy algorithms for mapping canopy foliar chemical and morphological traits and their uncertainties Singh, Aditya; Serbin, Shawn P.; McNeil, Brenden E. Ecological Applications, Vol. 25, Issue 8 https://doi.org/10.1890/14-2098.1	journal	December 2015
Direct Estimation of Aboveground Forest Productivity through Hyperspectral Remote Sensing of Canopy Nitrogen Smith, Marie-Louise; Ollinger, Scott V.; Martin, Mary E. Ecological Applications, Vol. 12, Issue 5 https://doi.org/10.2307/3099972	journal	October 2002
Monitoring plant functional diversity from space Jetz, Walter; Cavender-Bares, Jeannine; Pavlick, Ryan Nature Publishing Group https://doi.org/10.5167/uzh-127016	text	January 2016
Retrieval of foliar information about plant pigment systems from high resolution spectroscopy Ustin, S. L.; Gitelson, A. A.; Jacquemoud, S. Elsevier https://doi.org/10.5167/uzh-23317	text	January 2009
Reviews and Syntheses: optical sampling of the flux tower footprint Gamon, J. A. Biogeosciences, Vol. 12, Issue 14 https://doi.org/10.5194/bg-12-4509-2015	journal	January 2015
Predicting landscape-scale CO ₂ flux at a pasture and rice paddy with long-term hyperspectral canopy reflectance measurements Matthes, J. H.; Knox, S. H.; Sturtevant, C. Biogeosciences, Vol. 12, Issue 15 https://doi.org/10.5194/bg-12-4577-2015	journal	January 2015
A simple two-dimensional parameterisation for Flux Footprint Prediction (FFP) Kljun, N.; Calanca, P.; Rotach, M. W. Geoscientific Model Development, Vol. 8, Issue 11 https://doi.org/10.5194/gmd-8-3695-2015	journal	January 2015
A simple two-dimensional parameterisation for Flux Footprint Prediction (FFP) Kljun, N.; Calanca, P.; Rotach, M. W. Karlsruhe https://doi.org/10.5445/ir/1000062070	text	January 2015

Cited By (1)

From the Arctic to the tropics: multibiome prediction of leaf mass per area using leaf reflectance Serbin, Shawn P.; Wu, Jin; Ely, Kim S. New Phytologist, Vol. 224, Issue 4 https://doi.org/10.1111/nph.16123	journal	September 2019

Figures / Tables (7)

Similar Records

Remotely estimating photosynthetic capacity, and its response to temperature, in vegetation canopies using imaging spectroscopy

Journal Article · Thu Jun 11 00:00:00 EDT 2015 · Remote Sensing of Environment · OSTI ID:1228836

Related Subjects

47 OTHER INSTRUMENTATION
54 ENVIRONMENTAL SCIENCES
eddy covariance
gross primary productivity
hyperspectral imagery
hysplRI
imaging spectroscopy
partial least squares regression

Using imaging spectroscopy to detect variation in terrestrial ecosystem productivity across a water-stressed landscape

Citation Formats

References (69)

Cited By (1)

Figures / Tables (7)

Similar Records

Related Subjects