Results 231 to 240 of about 169,947 (260)
Some of the next articles are maybe not open access.
Dosage of plant protection products adapted to leaf area index in viticulture
Crop Protection, 2007Abstract The efficacy of plant protection products depends on many factors. Among them, the dose of active ingredient, the size of deposits, the number of deposits and the dose per deposit on the leaf surface are very important elements for successful control of diseases.
W. Siegfried +3 more
openaire +1 more source
Inversion of leaf area index for invasive plant using ENVISAT ASAR
2009 Joint Urban Remote Sensing Event, 2009In this paper, leaf area index LAI retrieval of invasive plant species from C-band synthetic aperture radar (SAR) data was demonstrated to be feasible via experiment. Taking an invasive plant of spartina alterniflora in Dongtan of Chongming island, Shanghai, China as example, a specific method that inversion LAI of invasive plant from the ENVISAT dual ...
Ting Xiao, Wen-peng Lin, Neng Chen
openaire +1 more source
Agricultural and Forest Meteorology, 1991
Abstract Hemispherical photographs were taken beneath an 80-years-old Douglas-fir (Pseudotsuga menzie sii) forest stand under clear and overeast sky conditions, and under clear sky with the canopy partially covered with snow. The photographs were digitized using an optical scanner.
J.M. Chen, T.A. Black, R.S. Adams
openaire +1 more source
Abstract Hemispherical photographs were taken beneath an 80-years-old Douglas-fir (Pseudotsuga menzie sii) forest stand under clear and overeast sky conditions, and under clear sky with the canopy partially covered with snow. The photographs were digitized using an optical scanner.
J.M. Chen, T.A. Black, R.S. Adams
openaire +1 more source
Estimation of plant area index of grasslands from measurements of canopy radiation profiles
Agricultural and Forest Meteorology, 2001A method is presented by which a simple physical model of radiative transfer may be used to estimate the vertical distribution of the plant area index (PAI) from measurements of average photosynthetically active radiation at various heights within the canopy and a known phytoelement inclination distribution.
Georg Wohlfahrt +3 more
openaire +1 more source
Global Ecology and Biogeography, 1999
SummaryThe aim of this study is to establish a practical index that considers both the size of the global range, and the mean relative abundance of species within their range. Detailed general distribution maps provide the basis for a classification of ranges into nine size categories.
Matthias H. Hoffmann, Erik Welk
openaire +1 more source
SummaryThe aim of this study is to establish a practical index that considers both the size of the global range, and the mean relative abundance of species within their range. Detailed general distribution maps provide the basis for a classification of ranges into nine size categories.
Matthias H. Hoffmann, Erik Welk
openaire +1 more source
Use deconvolution to increase the resolution of the plant area index (PAI) estimates
2021Forests play an essential role in the terrestrial ecosystem. To better measure and understand the changes and structure of vegetation above land, NASA launched Global Ecosystem Dynamics Investigation (GEDI) space-borne lidar to monitor 51.6°S to 51.6°N areas.
openaire +2 more sources
Characterising understorey Plant Area Index with TLS
2021Wilkes, Phil +3 more
openaire +1 more source
Efficiency of the leaf disc method for estimating the leaf area index of soybean plants
2013O objetivo deste estudo foi avaliar a eficiência do método dos discos foliares para estimar o índice de área foliar (IAF) de plantas de soja em comparação como método de fotos digitais. O delineamento experimental utilizado foi o de parcelas subdivididas com três repetições.
Pierozan Junior, Clovis +1 more
openaire +1 more source
Study on Drought Index in Major Planting Area of Winter Wheat of China
Sensor Letters, 2012Li Sun +4 more
openaire +1 more source