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Wyszukujesz frazę "Ita, R. E." wg kryterium: Autor


Wyświetlanie 1-2 z 2
Tytuł:
Differential Biomass Apportionments and Carbon Stocks in Vegetation of Natural and Artificial Ecosystems in Akwa Ibom State, Nigeria
Autorzy:
Ita, R. E.
Powiązania:
https://bibliotekanauki.pl/articles/1031588.pdf
Data publikacji:
2020
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Afforestation
Arboretum
Biomass apportionment
Carbon stocks
Climate change
Forest
Global warming
Mangrove
Orchard
Opis:
Differential biomass and carbon stocks were investigated in vegetation of natural and artificial ecosystems in Akwa Ibom State. Three vegetation plots were used for each site. In each plot, three belt transects were laid and in each transect, vegetation were sampled systematically in ten 10 m × 10 m quadrat. Vegetation variables such as DBH, height of species were measured while their ages were estimated. The biomass and carbon stocks of species were estimated standardized allometric functions. The result revealed a total of 15, 30, 19 and 19 species in the mangrove, forest, arboretum and orchard, respectively. The biomass allocation in the various woody species components followed this decreasing order; stem > branches > leaves. The standing biomass in the ecosystems followed this decreasing order; forest (179.14 tons) > arboretum (53.94 tons) mangrove (33.03 tons) > orchard (17.14 tons). The carbon stock in the vegetation also followed this decreasing order: forest (89.65 tons) > arboretum (28.51 tons) > mangrove (16.52 tons) > orchard (8.57). Species such as Elaeis guineensis (in mangrove), Coula edulis (in forest), Temarindus indica (in arboretum) and Anacardium occidentalis (in orchard) had the highest values for biomass and sequestered carbon while species such as Alchornea cordifolia (in mangrove), Maesoboytra dusenii (in forest), Rauwolfia vomitoria (in arboretum) and Anthocleista vogelli (in orchard) had the least standing biomass and sequestered carbon. Conclusively, these results have practical implications in environmental monitoring and management, afforestation, forest protection and conservation, climate change and global warming.
Źródło:
World Scientific News; 2020, 146; 1-21
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of Air Quality and Meteorological Variables in Lower Stubbs Creek, Qua Iboe River Estuary, Nigeria
Autorzy:
Ogbemudia, F. O.
Ita, R. E.
Powiązania:
https://bibliotekanauki.pl/articles/1031692.pdf
Data publikacji:
2020
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Air pollution
Air quality
Lower Stubbs Creek
Meteorology
Qua Iboe River Estuary
gas flaring
gaseous emissions
Opis:
The assessment of air quality and meteorological variables in Lower Stubbs Creek, Qua Iboe River Estuary, Nigeria was carried out using portable hand held gas monitors for atmospheric gases and hygrometer, thermometer, anemometer and digital compass for relative humidity, temperature, wind speed and wind direction. Parameters measured were SO2, NO2, H2S, CO, NH3, Cl2, HCN, PM2.5, PM10, relative humidity, temperature, wind speed and wind direction. The results for the atmospheric gases followed this decreasing magnitude; PM10 (110.35 µ/m3) > PM2.5 (55.66 µ/m3) > CO (19.00 ppm) > NH3 (5.86 ppm) > HCN (1.41 ppm) > H2S (0.77 ppm) > Cl2 (0.47 ppm) > NO2 (0.28 ppm) > SO2 (0.26 ppm). For the meteorological variables, the mean values for temperature, relative humidity and wind speed were 25.86 ºC, 67.71 % and 1.17 m/s. The predominant wind direction was the North Easterly winds. The result for the air quality using 5 criteria pollutants showed that NO2, SO2 had Air Quality Index (AQI) values of 0 each, while CO, PM2.5 and PM10 had AQI values of 224, 151 and 78, respectively. Based on the air quality ratings, the average concentrations of NO2, and SO2 in the atmosphere were good while the concentrations of CO, PM2.5 and PM10 were very unhealthy, unhealthy and moderate, respectively. This study shows that this region is polluted with CO and particulate matters, hence requires prompt intervention plans and consistent monitoring.
Źródło:
World News of Natural Sciences; 2020, 28; 121-130
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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