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Assessing the effects of subtropical forest fragmentation on leaf nitrogen distribution using remote sensing data

Author: Cho, Moses A ; Ramoelo, Abel ; Debba, Pravesh ; Mutanga, O ; Mathieu, Renaud SA ; Van Deventer, Heidi ; Ndlovu, N Date: Oct 2013 Subtropical forest loss resulting from conversion of forest to other land-cover types such as grassland, secondary forest, subsistence crop farms and small forest patches affects leaf nitrogen (N) stocks in the landscape. This study explores ... Read more
Estimating mineral content of indigenous browse species using Laboratory spectroscopy and Sentinel-2 imagery

Author: Gama, MJ ; Cho, Moses A ; Chirwa, P ; Masemola, Cecilia Date: Mar 2019 Trees provide low-cost organic inputs, with the potential to improve livelihoods for rural communities. Understanding foliar nutrients of tree species is crucial for integration of trees into agroecosystems. The study explored nitrogen (N), ... Read more
Explaining Leaf Nitrogen Distribution in a Semi-Arid Environment Predicted on Sentinel-2 Imagery Using a Field Spectroscopy Derived Model

Author: Ramoelo, Abel ; Cho, Moses A Date: Feb 2018 Leaf nitrogen concentration (leaf N, %) is an essential component for understanding biogeochemical cycling. Leaf N is a good indicator of grass or forage quality, which is important for understanding the movements and feeding patterns of ... Read more
Monitoring grass nutrients and biomass as indicators of rangeland quality and quantity using random forest modelling and WorldView-2 data

Author: Ramoelo, Abel ; Cho, Moses A ; Mathieu, Renaud SA ; Madonsela, S ; van de Kerchove, R ; Kaszta, Z ; Wolff, E Date: Dec 2015 Land use and climate change could have huge impacts on food security and the health of various ecosystems. Leaf nitrogen (N) and above-ground biomass are some of the key factors limiting agricultural production and ecosystem functioning. Leaf ... Read more
The potential of Sentinel-2 spectral configuration to assess rangeland quality

Author: Ramoelo, Abel ; Cho, Moses A ; Mathieu, Renaud SA ; Skidmore, AK Date: Aug 2015 Sentinel-2 is intended to improve vegetation assessment at local to global scales. Today, estimation of leaf nitrogen (N) as an indicator of rangeland quality is possible using hyperspectral systems. However, few studies based on commercial ... Read more
Potential to monitor plant stress using remote sensing tools

Author: Ramoelo, Abel ; Dzikiti, Sebinasi ; Van Deventer, Heidi ; Maherry, A ; Cho, Moses A ; Gush, Mark B Date: Jan 2014 The growing energy crisis has necessitated the expansion of thermal power stations to meet South Africa's electricity needs. Possessing vast amounts of coal deposits, the Waterberg region of the Limpopo Province is set to undergo rapid ... Read more
Relative lack of regeneration of shade-intolerant canopy species in some South African forests

Author: Midgley, JJ ; Everard, DA ; Vanwyk, G Date: Jan 1995 Some species such as Celtis Africana, are experiencing relative recruitment bottlenecks, because there are usually fewer recruits [i.e. individuals <20 cm diameter at breast height, (dbh)] than canopy individuals. The species with low recruitment ... Read more
Relevance of new multispectral imagery for assessing tropical forest disturbance: RapidEye and WorldView-2

Author: Cho, Moses A ; Ramoelo, Abel ; Mutanga, O ; Van Deventer, Heidi ; Debba, Pravesh ; Mathieu, Renaud SA Date: Nov 2012 The aims of this study were to assess utility of RapidEye imagery for predicting leaf nitrogen concentration and evaluate the effects of forest fragmentation on leaf nitrogen distribution in the Dukuduku forest, KwaZulu Natal, South Africa. ... Read more

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Browsing by Subject "Leaf nitrogen"

Browsing by Subject "Leaf nitrogen"

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