Journal ArticleDOI
Direct and Indirect Estimation of Leaf Area Index, fAPAR, and Net Primary Production of Terrestrial Ecosystems
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TLDR
In this paper, a review of direct and indirect methods used to estimate leaf area index (L), fraction of absorbed photosynthetically active radiation (fAPAR), and net primary production (NPP) from remotely sensed products is presented.About:
This article is published in Remote Sensing of Environment.The article was published on 1999-10-01. It has received 1148 citations till now. The article focuses on the topics: Primary production.read more
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Journal ArticleDOI
FLUXNET: A New Tool to Study the Temporal and Spatial Variability of Ecosystem-Scale Carbon Dioxide, Water Vapor, and Energy Flux Densities
Dennis D. Baldocchi,Eva Falge,Lianhong Gu,Richard J. Olson,David Y. Hollinger,Steven W. Running,P. M. Anthoni,Ch. Bernhofer,Kenneth J. Davis,Robert G. Evans,Jose D. Fuentes,Allen H. Goldstein,Gabriel G. Katul,Beverly E. Law,Xuhui Lee,Yadvinder Malhi,Tilden P. Meyers,William Munger,Walter C. Oechel,Kim Pilegaard,Hans Peter Schmid,Riccardo Valentini,Shashi B. Verma,Timo Vesala,Kell B. Wilson,S. C. Wofsy +25 more
TL;DR: The FLUXNET project as mentioned in this paper is a global network of micrometeorological flux measurement sites that measure the exchanges of carbon dioxide, water vapor, and energy between the biosphere and atmosphere.
Book
Principles of Terrestrial Ecosystem Ecology
TL;DR: In this paper, the Ecosystem Concept is used to describe the Earth's Climate System and Geology and Soils, and the ecosystem concept is used for managing and sustaining ecosystems.
FLUXNET: A New Tool to Study the Temporal and Spatial Variability of Ecosystem-Scale Carbon Dioxide, Water Vapor, and Energy Flux Densities
Dennis D. Baldocchi,Eva Falge,Lianhong Gu,Richard J. Olson,David Y. Hollinger,Steven W. Running,P. M. Anthoni,Christian Bernhofer,Kenneth J. Davis,Robert G. Evans +9 more
Journal ArticleDOI
Review of methods for in situ leaf area index determination Part I. Theories, sensors and hemispherical photography
TL;DR: It is suggested that the use of a digital camera with high dynamic range has the potential to overcome a number of described technical problems related to indirect LAI estimation.
Journal ArticleDOI
Ground‐based measurements of leaf area index: a review of methods, instruments and current controversies
TL;DR: The accuracy, sampling strategy and spatial validity of theLAI measurements have to be assessed for quality assurance of both the measurement and the modelling purposes of all the LAI-dependent ecophysiological and biophysical processes of canopies.
References
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Journal ArticleDOI
Terrestrial ecosystem production: A process model based on global satellite and surface data
Christopher S. Potter,James T. Randerson,Christopher B. Field,Pamela A. Matson,Peter M. Vitousek,Harold A. Mooney,Steven Klooster +6 more
TL;DR: In this paper, the authors present a modeling approach aimed at seasonal resolution of global climatic and edaphic controls on patterns of terrestrial ecosystem production and soil microbial respiration using satellite imagery (Advanced Very High Resolution Radiometer and International Satellite Cloud Climatology Project solar radiation), along with historical climate (monthly temperature and precipitation) and soil attributes (texture, C and N contents) from global (1°) data sets as model inputs.
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Solar radiation and productivity in tropical ecosystems
TL;DR: Conventional estimates of efficiency in terms of the amount of solar radiation incident at the earth's surface provide ecologists and agronomists with a method for comparing plant productivity under different systems of land use and management and in different * Opening paper read at IBP/UNESCO Meeting on Productivity of Tropical Ecosystems.
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Defining leaf area index for non‐flat leaves
Jing M. Chen,T. A. Black +1 more
TL;DR: In this article, the projection coefficients of several objects including spheres, cylinders, hemicircular cylinders, and triangular and square bars are investigated through mathematical derivation and numerical calculation for a range of ellipsoidal angular distributions.
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The interpretation of spectral vegetation indexes
TL;DR: In this article, the spectral derivative of surface reflectance with respect to wavelength is used as a measure of chlorophyll abundance and energy absorption in the leaves of a broadband and near-infrared vegetation index.
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Global net primary production: Combining ecology and remote sensing
TL;DR: In this article, the authors used a combination of ecological principles, satellite data, and surface data to predict terrestrial net primary production (NPP) on a monthly time step, and estimated annual terrestrial NPP to be 48 Pg and the maximum efficiency of PAR utilization (ϵ∗) to be 0.39 g C MJ−1 PAR.