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Wyświetlanie 1-2 z 2
Tytuł:
Spatial Distribution of Nigerian Universities Offering Forestry Education using Geographic Information System
Autorzy:
Chukwu, Onyekachi
Ezenwenyi, Jacinta U.
Mebude, Kudirat O.
Powiązania:
https://bibliotekanauki.pl/articles/1111861.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Forestry education
Geographic information system
JAMB
National University Commission
Remote sensing
Spatial distribution
Opis:
The importance of forested areas to provide food, medicine and shelter and to maintaining a healthy environment cannot be overemphasized. Hence, handy information on the universities that offers forestry education is necessary. The study used a geographic information system to spatially distribute Universities in Nigeria that offer Forestry Education. The list of all the universities registered as awarding Forestry Degrees in Nigeria were obtained online from the National University Commission (NUC) register and Joint Admission and Matriculation Board (JAMB) brochures. The corresponding coordinates of the universities were obtained using hand-held Global Positioning Systems and from satellite imagery. Quantum Geographic Information System was used to develop the universities spatial distribution. Only 31 out of the 34 universities identified as awarding forestry degrees were on the NUC list. Moreover, 61.8% of all of these universities were owned by the Federal Government, 32.4% by State Governments and only 5.9% were privately owned. Out of the universities recognized by NUC, the South-West geopolitical zone had the highest number (8), followed by South-South (7), North-West (5), North-Central (4), North-East (4) and South-East (3) with least. Non-uniformity was observed in Educational bodies offering studies in forestry, hence the government should invest more in forest research and education.
Źródło:
World News of Natural Sciences; 2018, 20; 226-237
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Stability Assessment and Composition of Tree Species in Nigerian University
Autorzy:
Chukwu, Onyekachi
Chenge, Iveren B.
Powiązania:
https://bibliotekanauki.pl/articles/1178080.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Tree stability
slenderness coefficient
species composition
windthrow
Opis:
Wind remains a strong abiotic agent associated with damages of forest trees. The vulnerability of a tree to windthrow is highly influenced by the ratio of tree total height to its stem diameter (RHD). However, RHD has been identified as an index and measure of tree and stand stability. This study assessed the stability and composition of open grown tree species in the University of Ibadan, Nigeria. Diameter at breast height (Dbh) and total height (THt) of one hundred and thirty-nine (139) trees species with Dbh ≥5.0 cm found within three departments of the University were measured. A total of 36 species from 17 families were identified with Myrtaceae and Combretaceae families having highest (28.8% and 21.6%, respectively) numbers of tree. RHD was found to have negative correlation with all the tree growth variables investigated except THt. However, this study reveals that about 79 % of the trees found in the study area had RHD <80, indicating stable and low risk or susceptibility to windthrow, wind-induced bending and breakage. Hence, trees with RHD >80 (21%) were recommended for felling as they pose threat to human life and properties in the study area.
Źródło:
World Scientific News; 2018, 95; 235-245
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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