In summary, shade factors are used to model tree leaf area and functions such as effects of tree shade on building energy performance and rainfall interception. The most extensive database of shade factors is over 30 years old and contains values for only 47 species (McPherson, 1984). Most ...
'Leaf Area Index' refers to a measure calculated by summing the crown projections of trees with known surface area of assimilating organs, reflecting changes in them due to radiation damage of needles and leaves. AI generated definition based on: Journal of Environmental Radioactivity, 2022 ...
Leaf area index (LAI) is a key indicator for the assessment of the canopy’s processes such as net primary production and evapotranspiration. For this reason, the LAI is often used as a key input parameter in ecosystem services’ modeling, which is emerg
This Algorithm Theoretical Basis Document (ATBD) describes the algorithm to produce global Leaf Area Index (LAI) and Fraction of Photosynthetically Active Radiation (FPAR) absorbed by vegetation from atmospherically corrected surface reflectances. The MOD15 LAI and FPAR products are 1 km at launch prod...
Leaf area index (LAI) is a fundamental indicator of crop growth status, timely and non-destructive estimation of LAI is of significant importance for precision agriculture. In this study, a multi-rotor UAV platform equipped with CMOS image sensors was us
Rice is one of the most important grain crops worldwide. The accurate and dynamic monitoring of Leaf Area Index (LAI) provides important information to evaluate rice growth and production. This study explores a simple method to remotely estimate LAI with
Bar graph showing Leaf area index (LAI) and lateral growth (LG) of six peanut genotypes. The LAI and LG values of each genotype include manually taken values and derived values using four models (Reg-1, Reg-2, ANN-1, ANN-2 for LAI; and Reg-3, Reg-4, ANN-3, ANN-4 for LG). ...
First, both GPP and SIF are higher when the amount of Chl in the vegetation (i.e., the leaf area index) is higher. Second, both GPP and SIF are higher when irradiance above the stand is higher. Third, a positive relationship between ΦP and ΦF is caused by changes in NPQ; ...
Three: Divide leaf area by 413cm2to get leaf area index. For example, 458 cm2/413cm2=1.11. We fill in the table, as follows: DateIrrigation treatmentLeaf areaLeaf area index cm of watercm2cm2/cm2 17 June (15days after first cut)04581.11 ...
However, it is shown in [34] that a disadvantage of this approach is that the model-wise cost function of this method is not always smooth and may either have no minimum within the range of realistic parameter values or may have multiple local minima. In the same study, an alternative ...