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Variation of specific leaf area and upscaling to leaf area index in mature Scots pine
Trees, 2006Reliable and objective estimations of specific leaf area (SLA) and leaf area index (LAI) are essential for accurate estimates of the canopy carbon gain of trees. The variation in SLA with needle age and position in the crown was investigated for a 73-year-old Scots pine (Pinus sylvestris L.) stand in the Belgian Campine region.
Xiao, Chun-Wang +3 more
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Specific leaf area and leaf area index distribution in a young Douglas-fir plantation
Canadian Journal of Forest Research, 1986The spatial distribution of specific leaf area and leaf area index of needles in different age classes has been investigated in a young and unthinned Douglas-fir (Pseudotsugamenziesii (Mirb.) Franco) plantation in Central Italy through the destructive analysis of 12 trees sampled in four diameter size classes.
BORGHETTI, Marco +2 more
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Indirect Estimation of Leaf Area Index in VSP-Trained Grapevines Using Plant Area Index
American Journal of Enology and Viticulture, 2013Leaf area index (LAI) and canopy structure are important parameters affecting grape quality and yield of grapevines. Two different experimental protocols as well as the average LAI value of the different protocols for indirect estimation of LAI by gap fraction analysis in VSP-trained grapevines (Vitis vinifera L. cv. Riesling) were tested in this study
Doering +4 more
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Leaf area index mapping in northern Canada
International Journal of Remote Sensing, 2011In this study, a new LAI algorithm was developed with particular emphasis over northern Canada using a much finer resolution of remotely sensed data and in situ measurements collected over a wide range of northern arctic vegetation. A statistical relationship was developed between the in situ LAI measurements collected over vegetation plots in northern
Abdelgadir A. Abuelgasim +1 more
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Estimating leaf area index from satellite data
IEEE Transactions on Geoscience and Remote Sensing, 1993A method for estimating leaf area index from visible and near infrared measurements of vegetation above a soil background is applied to a Landsat Thematic Mapper data set. Some constants required for the procedure are inferred from the scattergram of data values.
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Inversion of maize leaf area index from UAV hyperspectral and multispectral imagery
Computers and Electronics in Agriculture, 2023Anting Guo +6 more
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European Journal of Agronomy, 2018
Crop yield estimation at regional scale using crop model is generally subjected to large uncertainties from insufficient spatial information on heterogeneous growth environment and agronomic management practices.
Yi Chen, Zhao Zhang, F. Tao
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Crop yield estimation at regional scale using crop model is generally subjected to large uncertainties from insufficient spatial information on heterogeneous growth environment and agronomic management practices.
Yi Chen, Zhao Zhang, F. Tao
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Vegetative Development: Total Leaf Area and Surface Area Indexes
2010Canopy management determines canopy shape and spatial leaf area distribution which in turn determines vineyard productivity. There are two indexes evaluating vineyard productivity which involve leaf development: total leaf area – LAI – and external leaf area – SA –. The first one refers to total leaf area developed per m2 of soil while SA refers to the
Patricia Sánchez-de-Miguel +3 more
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ESTIMATION OF LEAF AREA INDEX IN SOME BREBA FIG CULTIVARS
Acta Horticulturae, 2008Determination of leaf area index which is a key factor in many physiological processes in plants plays a crucial role. Despite the difficulty of measurement, without a suitable instrument it is quite time consuming and destructive. The exact measurement of leaf area index requires the measurement of the total leaf area of the canopy.
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Journal of Applied Remote Sensing, 2012
Leaf area index (LAI) is a key parameter in most land surface models. Models that operate at multiple spatial scales may require consistent LAI inputs at different spatial resolutions or from different sensors. For example, the atmosphere-land exchange inverse model and associated disaggregation algorithm (DisALEXI) use the moderate resolution imaging ...
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Leaf area index (LAI) is a key parameter in most land surface models. Models that operate at multiple spatial scales may require consistent LAI inputs at different spatial resolutions or from different sensors. For example, the atmosphere-land exchange inverse model and associated disaggregation algorithm (DisALEXI) use the moderate resolution imaging ...
openaire +1 more source