Essays about: "plant area index"

Showing result 11 - 15 of 40 essays containing the words plant area index.

  1. 11. Vegetation phenology derived using the plant phenology index and the normalized difference vegetation index for the Balkan peninsula, south-eastern Europe

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Aleksandra Ivanova; [2019]
    Keywords : physical geography; ecosystem analysis; phenology; vegetation; climate change; remote sensing; plant phenology index; PPI; timesat; Balkan peninsula; Earth and Environmental Sciences;

    Abstract : This study analyses the performance of the satellite derived Plant Phenology Index (PPI) against the Normalized Difference Vegetation Index (NDVI) for estimating start of season (SOS) and end of season (EOS) of vegetation growth in part of the Balkan Peninsula, Southeastern Europe (2000 – 2016). Results revealed that PPI and NDVI differ considerably; SOS and EOS may diverge by more than one month between the two indices. READ MORE

  3. 12. Using airborne laser scans to model roughness length and forecast energy production of wind farms.

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Joris Valee; [2019]
    Keywords : Forest Management; Airborne Laser Scan; Roughness Length; Displacement Height; Wind Power; Annual Energy Production; MATLAB; WindPRO;

    Abstract : Successful wind power projects start with a realistic representation of the surface, more specifically the surface roughness of the site. This thesis investigates the use of airborne laser scans to model the surface roughness around a new wind farm. READ MORE

  4. 13. Förekomst och angreppsgrad av gråmögel och ”purple spot of asparagus” i skånsk sparrisproduktion

    University essay from SLU/Dept. of Biosystems and Technology (from 130101)

    Author : Lotten Lundgren; [2018]
    Keywords : sparris; Asparagus officinalis; gråmögel; Botrytis cinerea; Stemphylium vesicarium; Stemphylium botryosum; integrerat växtskydd;

    Abstract : Svensk sparrisodling växer, men produktiviteten, mätt som skörden i ton per hektar, är lägre än i närliggande produktionsländer. Medelskörden i Sverige var 1,6 ton per hektar år 2016, medan Tysklands preliminära medelskörd var 5,5 ton/ha år 2017. READ MORE

  5. 14. New methods for seed potato production: an investigation into the production and farmer uptake of mini tubers in South Africa

    University essay from SLU/Dept. of Biosystems and Technology (from 130101)

    Author : Alba Sáez Fernández; [2018]
    Keywords : mini-tubers; Chlorophyll fluorescence; Leaf Area Index; small-scale farming;

    Abstract : Potatoes are by far the most produced fresh vegetable crop in South Africa. Remarkably, potato sales represent more than 30% of the turnover in the Fresh Produce Markets (FPM). READ MORE

  6. 15. Modelling of stand basal area from leaf and plant area indices in boreal forest systems of Sweden

    University essay from SLU/Southern Swedish Forest Research Centre

    Author : Alex Appiah Mensah; [2018]
    Keywords : leaf plant area index; plant area index; Norway spruce; Scots pine; mixed forest; basal area; national forest inventory; Sweden;

    Abstract : Leaf or plant area index (LAI/PAI) is a useful biophysical indicator to characterize the interrelationships between forests and the atmosphere and offers greater potential to estimate productivity of forested landscapes. Recently, hemispherical photography has been used in a pilot study implemented in the Swedish National Forest Inventory (NFI) to estimate LAI. READ MORE