Influence of Growth Media and Pot Sizes on the Early Agronomic Growth Performance of Grevillea robusta A. Cunn. ex R. Br.
Hirpa Abebe,
Wondmagegn Bekele,
Zerihun Dibaba
Issue:
Volume 11, Issue 5, October 2022
Pages:
110-114
Received:
24 June 2022
Accepted:
9 August 2022
Published:
19 September 2022
DOI:
10.11648/j.ajep.20221105.11
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Abstract: Grevillea robusta A. Cunn. ex R. Br., belongs to the Proteaceae family. Grevillea robusta is native to coastal eastern Australia. In our country, people started to use Grevillea robusta for different purposes as a windbreak, alley cropping, bees feed, fuel wood and for construction. The tree produces an attractively figured, easily worked wood, which was once a leading face veneer in world trade. Due to this all purposes, three polyethylene pots of (8, 10 and 12cm) lay flats diameter and 15cm length and Five different growing media (GM) or soil mix proportion based on volume GM1= (2Top soil: 2 part forest soil: 1 part sand; GM2=2 part Top soil: 2 compost: 1 part sand; GM3=1part Top soil: 2 part forest soil: 2 part sand; GM4=3part Top soil: 2 part compost: 1sand soil and GM5=3 Top soil: 2 forest soil: 1sand=control) treatments were used, which containing different ratios of top soil (TS), forest soil (FS), compost (Co) and sand soil (SS) were collected from local, natural forest environments and highly decomposed compost (the different materials get from locally easily available). The experimental design was a Randomized Complete Block Design with 3 replications under open field conditions at Sinana forestry nursery. Some morphological properties of the seedlings, such as seedling height and root collar diameter growth parameters were measured ever two weeks for four (4) months old seedlings. Finally, this experimental study shown GM3 and GM1 growing media with bothe 10cm and 8cm polythene pot sizes were confirmed appreciate for raising Grevillea robusta tree species to achieve or attained the best seedling quality for successful plantation.
Abstract: Grevillea robusta A. Cunn. ex R. Br., belongs to the Proteaceae family. Grevillea robusta is native to coastal eastern Australia. In our country, people started to use Grevillea robusta for different purposes as a windbreak, alley cropping, bees feed, fuel wood and for construction. The tree produces an attractively figured, easily worked wood, whi...
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Vulnerability Assessment of Coastal Wards of Chittagong City Corporation Due to Climate Change-Bangladesh
Saiyed Mahmud Tanvir Hassan,
Umma Salma,
Mohammad Zahirul Islam Talukder,
Reyad Hossain,
Ahmed Jubaer,
Mohammed Khorshed Ali,
Mohammad Ziaur Rahman,
Sayed Mohammed Ariful Islam
Issue:
Volume 11, Issue 5, October 2022
Pages:
115-130
Received:
13 August 2022
Accepted:
2 September 2022
Published:
21 September 2022
DOI:
10.11648/j.ajep.20221105.12
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Abstract: Coast of Chittagong City Corporation, Bangladesh is one of the populous regions of the world. As though, coast of Bangladesh is termed as hotspot for vulnerability to the impacts of climate change so coast of Chittagong City Corporation should be on focus as it is a port city and important for the economy of Bangladesh. This study was aimed to comprehend the vulnerability in several aspects due to climate change effects along the coastal wards of Chittagong City Corporation. Two different approaches of vulnerability to climate change namely as LVI (Livelihood Vulnerability Index) and IPCC-VI (Intergovernmental Panel on Climate Change vulnerability index), using 34 contributing factors were done to calculate the vulnerability of coast of Chittagong City Corporation, particularly in 4 wards: ward 11, ward 26, ward 39 and ward 41. Data were collected and integrated using questionnaire survey of households and secondary information about climate. However, same scale was used to evaluate the individual vulnerability indexes but the overall indicator scale was different between LVI (0 to 1) and IPCC-VI (-1 to 1). Results revealed high vulnerability in ward 11 (0.51) than the ward 26 (0.44), ward 39 (0.42) & ward 41 (0.41) according to LVI. On the other hand, ward 26 (0.05) and ward 41 (0.06) were more vulnerable than ward 11 (0.02) as well as ward 39 (0.02) according to IPCC-VI approach. This study provides land planners, policy makers and all other associated stakeholders a flexible pragmatic tool to assess the extent of level of vulnerability to climate change related impacts on coastal areas.
Abstract: Coast of Chittagong City Corporation, Bangladesh is one of the populous regions of the world. As though, coast of Bangladesh is termed as hotspot for vulnerability to the impacts of climate change so coast of Chittagong City Corporation should be on focus as it is a port city and important for the economy of Bangladesh. This study was aimed to comp...
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Assessment of Carbon Stock in Woody Vegetation for the Mitigation of Atmospheric CO2 Emissions at Natitingou City in North Benin (West Africa)
Bake Orou Wari,
Soufouyane Zakari,
Mama Djaouga,
Waris Kewouyemi Chouti,
David Baloubi,
Ibouraima Yabi,
Brice Tente,
Ismaila Toko Imorou
Issue:
Volume 11, Issue 5, October 2022
Pages:
131-142
Received:
12 September 2022
Accepted:
5 October 2022
Published:
24 October 2022
DOI:
10.11648/j.ajep.20221105.13
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Abstract: The study aims at evaluating the potential of carbon sequestration by woody vegetation in the township of Natitingou. The phytosociological survey method was used to collect data in plots 344 of 1 ha each using the stratified random sampling technique. The use of the allometric model, developed for the Sudanian domain, made it possible to estimate the carbon of the different species inventoried. In total, 89 woody species, divided into 74 genera and 36 families were counted. The most representative families are Leguminosae-Caesalpinioideae (15%), Moraceae (9%), Anacardiaceae (7%), Leguminosae-Mimosoideae (7%). The urban woody vegetation of Natitingou produces on average 42.3 ± 4.1 tMs/ha of biomass for an average carbon stock rate of 20.6 ± 2.0 t/ha, of which the equivalent in trapped CO2 is 75.5 ± 7.4 t/ha. Afzelia africana (7.8 t/tree) and Adansonia digitata (6.9 t/tree) have the highest average carbon values by species, while Annona senegalensis (0.008 t/tree) and Senna alata (0.006 t/tree) have the lowest values. The ecological value of vegetation in the urban environment of Natitingou is estimated at 803901 $. The atmospheric carbon reduction potential of urban vegetation in Natitingou was revealed and will serve decision makers and the public as a springboard for urban planning projects and as an opportunity for the carbon market in the REDD+ process.
Abstract: The study aims at evaluating the potential of carbon sequestration by woody vegetation in the township of Natitingou. The phytosociological survey method was used to collect data in plots 344 of 1 ha each using the stratified random sampling technique. The use of the allometric model, developed for the Sudanian domain, made it possible to estimate ...
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