Essays about: "leaf area index"

Showing result 26 - 30 of 38 essays containing the words leaf area index.

  1. 26. Estimating leaf area index from satellite data in deciduous forests of southern Sweden

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Sandra Persson; [2014]
    Keywords : SPOT; Geography; Physical Geography; Leaf Area Index; Vegetation Index; Geografi; Naturgeografi; Lövyteindex; Vegetationsindex; Earth and Environmental Sciences;

    Abstract : Leaf area index, LAI, is an important biophysical parameter in ecological modeling. It is the ratio of leaf area per unit ground area. To obtain LAI over large areas in a fast and convenient way the use of satellite data is important. READ MORE

  3. 27. Combining hyperspectral UAV and mulitspectral FORMOSAT-2 imagery for precision agriculture applications

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Caroline Gevaert; [2014]
    Keywords : Physical Geography and Ecosystem analysis; GIS; precision agriculture; crop monitoring; data fusion; Earth and Environmental Sciences;

    Abstract : Precision agriculture requires detailed information regarding the crop status variability within a field. Remote sensing provides an efficient way to obtain such information through observing biophysical parameters, such as canopy nitrogen content, leaf coverage, and plant biomass. READ MORE

  4. 28. Assessing the Potential of Embedding Vegetation Dynamics into a Fire Behaviour Model : LPJ-GUESS-FARSITE

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Efren Lopez Blanco; [2014]
    Keywords : mediterranean ecosystem; LPJ-GUESS-FARSITE; FARSITE; fire modelling; fire behaviour prediction; dynamic fuel model; geography; fire recurrence; fuel loading; LPJ-GUESS-SPITFIRE; fuel moisture; physical geography; GEM; Earth and Environmental Sciences;

    Abstract : Disturbances such as wildfires are key players involved in the shape, structure and function of the ecosystems. Fire is rarely included in Dynamic global vegetation models due to their difficulty in implementing its processes and impacts associated. READ MORE

  5. 29. Comparison of MODIS-Algorithms for Estimating Gross Primary Production from Satellite Data in semi-arid Africa

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Martin Nilsson; [2013]
    Keywords : Leaf Area Index; LAI; Enhanced Vegetation Index; EVI; Normalized Vegetation Index; NDVI; Gross Primary Production; GPP; remote sensing; MODIS; FPAR; Fraction of Photosynthetically Active Radiation; Eddy Covariance; Africa; physical geography; Earth and Environmental Sciences;

    Abstract : The climatic patterns of the world are changing and with them the spatial distribution of global terrestrial carbon; the food and fiber of the world and in itself an important factor in the changing climate. Knowledge of how the terrestrial carbon stock is changing, its distribution and quantity, is important in understanding how the patterns of the world are changing and large scale models using remotely sensed data have emerged for this purpose. READ MORE

  6. 30. Evaluation of process based model 3-PG for simulation of net primary production of Picea abies in northern and southern regions of Sweden under climate change

    University essay from SLU/Southern Swedish Forest Research Centre

    Author : Gizachew Tarekegn Getahun; [2012]
    Keywords : 3-PG model; climate change; model evaluation; process based model; Heureka StandWise; Norway spruce; NPP;

    Abstract : The results of this evaluation reveal good performance of 3-PG and seems reasonable to use it for simulation of net primary production in Sweden. Subsequently,the NPP of Picea abies was simulated using 3-PG for 110 years in northern and southern Sweden under climate change. READ MORE