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    Comparing Tree Heights among Montane Forest Blocks of Kenya Using LiDAR Data from GLAS

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    Date
    2015
    Author
    Kinyanjui, Mwangi James
    Kigomo, Ngugi John
    Kamau, Miriam Wambui
    Nderitu, Joel Kariuki
    Nyanjui, Charles
    Nganga, John Macharia
    Ojijo, William Odidi
    Ashiono, Fredrick
    Owate, Augustine Omamo
    Ndirangu, Monicah Katumbi
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    Abstract
    This study was designed to use LiDAR data to research tree heights in montane forest blocks of Kenya. It uses a completely randomised block design to asses if differences exist in forest heights: 1) among montane forest blocks, 2) among Agro ecological zones (AEZ) within each forest block and 3) between similar AEZ in different forest blocks. Forest height data from the Geoscience Laser Altimeter System (GLAS) on the Ice Cloud and Land Elevation Satellite (ICE- SAT) for the period 2003-2009 was used for 2146 circular plots, of 0.2 - 0.25 ha in size. Results indicate that, tree height is largely influenced by Agro ecological conditions and the wetter zones have taller trees in the upper, middle and lower highlands. In the upper highland zones of limited human activity, tree heights did not vary among forest blocks. Variations in height among forest blocks and within forest blocks were exaggerated in regions of active human intervention.
    URI
    https://karuspace.karu.ac.ke/handle/20.500.12092/2250
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