A method to account for shoot scale clumping in coniferous canopy reflectance models

By S. Smolander, Pauline Stenberg. 2003

161 citations recorded by the source corpus.

Subfields: Ecological Modeling, Ecology, Global and Planetary Change

View Paper: https://www.semanticscholar.org/paper/f59ca80a5a2d1e9c7735706362061732119ebf44

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Citations in the corpus

Sources of variability in canopy reflectance and the convergent properties of plants. (2011, background): “An implication of this theory is that multiple scattering within the crown allows for a higher probability of photon absorption, and hence lower reflectance (Smolander & Stenberg, 2003; Rautiainen & Stenberg, 2005; Smolander & Stenberg, 2005).”
The role of crown architecture, leaf phenology and photosynthetic activity in promoting complementary use of light among coexisting species in temperate forests (2010, background): “Furthermore, conifers and broadleaved trees utilize different regions of the spectral space (Smolander and Stenberg 2003) and this may contribute to complementary use of light between conifers and broadleaved trees in mixed forests.”
Mapping gap fraction, LAI and defoliation using various ALS penetration variables (2010, background): “Pine trees are found to have a particularly low canopy reflectance as compared to many other foliage objects because of multiple scattering within the shoots (Smolander and Stenberg 2003).”
Scale Issues in Remote Sensing: A Review on Analysis, Processing and Modeling (2009, methodology): “Smolander and Stenberg [38] used a clumping index to correct the radiation attenuation coefficient at a shoot scale and proposed the forest reflectance models for coniferous forests.”
Canopy spectral invariants, Part 2: Application to classification of forest types from hyperspectral data (2011, background): “1 [46,47], giving a high value of the local (shoot) recollision probability, pn,n 1 1⁄4 1 4STAR 1⁄4 0:53 [48].”
Simple parameterizations of the radiation budget of uniform broadleaved and coniferous canopies (2005, methodology): “However, since the shoot-level correction of Smolander and Stenberg (2003) was able to extend the applicability of the model from Poisson leaf-canopies to Poisson shoot-canopies, it seems possible that a similar correction could work also for models with nonuniform higher level structure.”
Estimation of LAI and fractional cover from small footprint airborne laser scanning data based on gap fraction (2006, background): “In coniferous canopies, clumping of small-scale canopy elements (e.g., needles, twigs) into shoots of some centimeters to some decimeters in size manifests an underestimation of LAI that needs to be corrected (Smolander & Stenberg, 2003).”
Applicability of the PROSPECT model for Norway spruce needles (2006, background): “…of coniferous forests at the canopy (Kuusk and Nilson 2000, Fang et al. 2003, Kotz et al. 2004, Smolander and Stenberg 2005) as well as shoot level (Smolander and Stenberg 2003, Rautiainen and Stenberg 2005), along with current approaches in quantitative remote sensing (RS) (Fernandes et al. 2004,…”
The structural and radiative consistency of three-dimensional tree reconstructions from terrestrial lidar (2009, background): “The structure for each of the four elements follows the model of Smolander and Stenberg (2003) and features identical numbers of needles (190).”
RAMI4PILPS: An intercomparison of formulations for the partitioning of solar radiation in land surface models (2011, background): “D) heterogeneity of canopy architectures (sometimes referred to as clumping) at the foliage, tree and stand level scales [Baldocchi et al., 2000; Smolander and Stenberg, 2003; Dickinson et al., 2008].”
The value of multiangle measurements for retrieving structurally and radiatively consistent properties of clouds, aerosols, and surfaces (2005, background): “The coefficient 0.95 depends on the recollision probability (Smolander & Stenberg, 2003, 2005) and the soil albedo (Shabanov et al., 2003; Wang et al., 2003).”
Retrieval of subpixel Tamarix canopy cover from Landsat data along the Forgotten River using linear and nonlinear spectral mixture models (2010, background): “Interestingly, the algebraic structure of these models holds across multiple mixing scales, from needle/leaf to shoot/ branch and from shoot/branch to canopy (2005; Lewis & Disney, 2007, Smolander & Stenberg, 2003).”