Results 31 to 40 of about 10,963 (248)
Sensors, 2015 Leaf area index (LAI) is one of the key biophysical variables required for crop modeling. Direct LAI measurements are time consuming and difficult to obtain for experimental and commercial fruit orchards.
Carlos Poblete-Echeverría +4 more
doaj +1 more source
Remote Sensing, 2019 The fire-tolerant eucalypt forests of south eastern Australia are assumed to fully recover from even the most intense fires; however, surprisingly, very few studies have quantitatively assessed that recovery.
Yogendra K. Karna +3 more
doaj +1 more source
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021 The accurate retrieval of canopy chlorophyll content (CCC) is essential to the effective monitoring of forest productivity, and environmental stress. However, the clumping index (CI), a vital canopy structural parameter, affects inaccurate remote sensing
Qi Sun +6 more
doaj +1 more source
Impacts of clumping effect on canopy reflectance using 3D radiative transfer modeling
Frontiers in Forests and Global Change, 2023 The product of leaf area index (LAI) and clumping index (CI) quantifies the effective leaf abundance and distribution across the landscape, and therefore, governs the radiation absorption, evapotranspiration, and carbon assimilation processes in the ...
Qiaoli Wu +5 more
doaj +1 more source
Developing a 3D clumping index model to improve optical measurement accuracy of crop leaf area index
Field Crops Research, 2022 The clumping index reflects the state of leaf aggregation, which is an essential structural parameter for calculating the leaf area index (LAI). Most of the previous clumping index models are one-dimensional (1D) models, in which the input parameters are measured in a long truncated manner (i.e., one-dimensional measurement path, line data), so that is
Ma, Xu +5 more
openaire +2 more sources
Tuning Mechanoreceptor Signaling Enhances the Adjuvant Effect of Biomaterial Vaccines
Advanced Functional Materials, EarlyView.Matrix stiffness serves as an independent immunological signal in biomaterial vaccines. Stiffer microporous hydrogel vaccines enhance dendritic cell maturation and migration to draining lymph nodes, promote T follicular helper cell expansion through Yap/Taz signaling, and increase antigen‐specific antibody production.
Lily Shang +13 more
wiley +1 more source
Distribution pattern of declined Brant`s oak (Quercus brantii Lindl.) trees in forests of Tol-e Ghah, Yasuj [PDF]
تحقیقات جنگل و صنوبر ایران, 2016 A forest stand of 25 ha in Tol-e Gah region nearby Yasuj (Kohgiluyeh and Boyer Ahmad province) was selected to assess the spatial distribution pattern of its dead trees of Brant`s oak (Quercus brantii Lindl).
Ehsan Taghvayipour +2 more
doaj +1 more source
Advanced Functional Materials, EarlyView.An atomically dispersed Ni catalyst featuring Ni‐N4 coordination is developed as a sulfur host for nonaqueous Zn─S batteries. This configuration modulates the electronic structure to lower activation barriers during rate‐limiting steps and promotes a robust ZnF2‐rich cathode‐electrolyte interphase, thereby accelerating sulfur redox kinetics ...
Junhyuk Ji +7 more
wiley +1 more source
Fractal index captures the role of vegetation clumping in locust swarming [PDF]
Functional Ecology, 2003 Summary This paper evaluates box‐counting dimension as a quantitative clumping index for discontinuous plant cover, and applies it to studies of both small‐ and large‐scale ecological processes in desert locust (Schistocerca gregaria) swarming. The quadrat under study is tiled with squares of increasing size, and the relationship between the number of
openaire +1 more source
Chitin‐Derived Carbon‐Metal Functional Materials
Advanced Functional Materials, EarlyView.Functional carbon materials are synthesized from combination of biopolymer (chitin) and iron precursors. The resultant material exhibits superior surface area and adsorptive properties compared to carbon materials synthesized directly from pure chitin.
Herry Fang +7 more
wiley +1 more source