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Showing items 1 through 9 of 52.
  1. Library Resource
    Journal Articles & Books
    December, 2017
    Sri Lanka

    Moderate Resolution Imaging Spectro-radiometer (MODIS) time-series Normalized Differential Vegetation Index (NDVI) products are regularly used for vegetation monitoring missions and climate change analysis. However, satellite observation is affected by the atmospheric condition, cloud state and shadows introducing noise in the data. MODIS state flag helps in understanding pixel quality but overestimates the noise and hence its usability requires further scrutiny. This study has analyzed MODIS MOD09A1 annual data set over Sri Lanka.

  2. Library Resource
    Journal Articles & Books
    June, 2018
    Sri Lanka

    Storage of surface water is widely regarded as a form of insurance against rainfall variability. However, creation of surface storage often endanger the functions of natural ecosystems, and, in turn, ecosystem services that bene t humans. The issues of optimal size, placement and the number of reservoirs in a river basin – which maximizes sustainable bene ts from storage – remain subjects for debate. This study examines the above issues through the analysis of a range of reservoir con gurations in the Malwatu Oya river basin in the dry zone of Sri Lanka.

  3. Library Resource
    Journal Articles & Books
    December, 2004
    Sri Lanka, South-Eastern Asia

    The "Ruhuna Basins" defined for this case study encompass three of the main rivers that flow through ancient Ruhuna, including the longest and most important river in the region, Walawe. The Ruhuna basins are important in the broader Sri Lankan context, the basin being the location of a major hydropower plant, irrigation schemes that make a significant contribution to national food production, and important nature reserves.

  4. Library Resource
    Journal Articles & Books
    December, 2000
    Sri Lanka, South-Eastern Asia
  5. Library Resource
    Journal Articles & Books
    December, 2006
    Sri Lanka, South-Eastern Asia
  6. Library Resource
    Journal Articles & Books
    December, 2001
    Sri Lanka

    Most forests in Sri Lanka are secondary, are mostly confined to the dry and intermediate zones of the country, and arise out of swidden agriculture. The majority of secondary forests which regenerate after swidden farming in the dry parts of Sri Lanka are grown from vegetative parts, that are from remaining roots and stumps. Secondary forests provide numerous products of importance to local people. They also help to bridge seasonal gaps in livelihoods.

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