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    Wyświetlanie 1-4 z 4
    Tytuł:
    Tree diversity and management of Village Common Forests in Bandarban
    Autorzy:
    Kamrul, K.I.
    Jashimuddin, J.
    Hossain, N.
    Powiązania:
    https://bibliotekanauki.pl/articles/10013.pdf
    Data publikacji:
    2017
    Wydawca:
    Fundacja na Rzecz Młodych Naukowców
    Tematy:
    tree
    species diversity
    management
    biodiversity
    Village Common Forests
    Bandarban district
    Bangladesh
    Opis:
    Village Common Forests (VCF) are used sustainably for water source conservation, livelihoods and other biomass needs ofethnic communities in the hilly areas of Bangladesh. The current forest degradation rate warrants the importance and potentiality of VCF for sustainable natural resources management. This study was conducted in two VCF of Lama and RumaUpazila at Chimbuk hill range in Bandarban district to explore the indigenous management techniques and tree species diversity. To identify tree species diversity, eighteen plots (9 plots from each VCF) were selected at different hill position (top, middle and bottom) by stratified random sampling method with the dimension of 20m×20m per plot. Shiner-winner and Simpson index were used to calculate the tree species diversity. According to the analyses, it was found that diversity was higher in top of the hill, but species density (stem/ha) was higher in the valley. It was also found that 23000 seedlings/ha regenerated naturally and among the 31 identified families, Moraceae was dominant where the density was 354 stems/ha with basal area 52.63 m2/ha. The dominant species were Schleicher oleosaand Anisopterascaphula and important non-timber species were Melocannabaccifera and Calamusgurubagrowing abundantly in the study areas. It was observed that the VCF were managed by ethnic Mro community with two different committees (customary and executive) who made some rules for natural forest conservation. This management practice is not only conserving hill forests, but also helping to improve degraded forest and create new habitats for biodiversity in the study area.
    Źródło:
    Environment, Earth and Ecology; 2017, 1, 2
    2543-9774
    2451-4225
    Pojawia się w:
    Environment, Earth and Ecology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effects of climate change on rice production at Khulna District, Bangladesh
    Autorzy:
    Hossain, N.
    Saifullah, A.S.M.
    Bhuiyan, S.H.
    Uddin, N.
    Rahman, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2049750.pdf
    Data publikacji:
    2019
    Wydawca:
    Fundacja na Rzecz Młodych Naukowców
    Tematy:
    rice
    production
    climate change
    trend analysis
    Bangladesh
    gross domestic product
    Mann-Kendall (MK) test
    Rice Production
    Opis:
    In Bangladesh 164 million people depend on rice but due to climate change (CC) vulnerabilities the yield of rice is severely reducing. Therefore, this study aimed to explore the effects of CC on rice yield using recent trend analysis, Mann-Kendall (MK) trend test and correlation. For this study, the required climate and selected rice production data were collected from Bangladesh Meteorological Department (BMD) and Department of Agriculture Extension (DAE), Khulna. In time series statistics both parametric and nonparametric methods were applied to detect a monotonic trend of climatic variability and Aman rice production. Correlation between climatic variability and rice production was also investigated. The study exposed that the temperature and rainfall had an increasing trend and statistically significant whereas the relative humidity found decreasing. Overall, the bright Sunshine had positive trend but week. According to nonparametric trend test of climatic variability and Aman yield only minimum temperature showed a positive trend which found statistically significant. In contrast, Mann-Kendall trend test revealed that rainfall had positively significant while temperature had negative significant. The correlation revealed the Aman production is a strong response with minimum temperature whereas the Lona Coche showed a positive correlation with maximum temperature. The variation of Aman production exhibited a positive correlation with both Rainfall and humidity respectively and Lona Coche found a negative correlation. The sunshine had a week correlation against both yields. The findings suggest should give attention of temperature-tolerant rice varieties to mitigate possible adverse effects of CC.
    Źródło:
    Environment, Earth and Ecology; 2019, 3, 1; 42-54
    2543-9774
    2451-4225
    Pojawia się w:
    Environment, Earth and Ecology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Reckoning physical properties of firewood with its preference by the rural households in a selected village of Narsingdi district of Bangladesh
    Autorzy:
    Miah, D.
    Islam, G.A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2049694.pdf
    Data publikacji:
    2020
    Wydawca:
    Fundacja na Rzecz Młodych Naukowców
    Tematy:
    physical property
    biomass energy
    value index
    firewood
    preference
    rural household
    Bangladesh
    firewood preferences
    fast drying
    easy flammability
    hot flame
    physical properties of
    Opis:
    The biomass energy has the potentiality of sequestering carbon and the capacity of reducing global warming. The study was conducted with a view to assessing the local preferences of firewood for domestic use with the physical characteristics of firewood species. The study was conducted in different communities of Kamrabo village under Shibpur Upazila in Narsingdi district of Bangladesh. Purposive random sampling was performed for the study covering 50% households with a total of 160 households of the study area. A direct interview with semi-structured questionnaires based on twelve quality criteria was conducted in the study area for identification of local preferences of firewood species and drawing up a pair-wise ranking matrix based on it. Fuel value index (FVI) was used to rank the preferred firewood species based on their physical properties. The trees Artocarpus heterophyllus, Swietenia mahagoni, Albizia lebbek, Acacia auriculiformis, Syzygium fruticosum, etc. having the FVI values were found in decreasing order. The study found a resemblance between the order of FVI values and the ranks of the firewood species by household preferences. The study will be useful in energy management and policy in rural Bangladesh.
    Źródło:
    Environment, Earth and Ecology; 2020, 4, 1; 15-30
    2543-9774
    2451-4225
    Pojawia się w:
    Environment, Earth and Ecology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Cultivation and economic prospects of betel nut (Areca catechu Linn.) and coconut (Cocos nucifera Linn.) in rural economy: A case study from Southeastern region of Bangladesh
    Autorzy:
    Rajasree, N.
    Akhter, H.
    Nurul, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2049749.pdf
    Data publikacji:
    2019
    Wydawca:
    Fundacja na Rzecz Młodych Naukowców
    Tematy:
    betel nut
    Areca catechu
    coconut
    Cocos nucifera
    cultivation
    rural economy
    distribution pattern
    sustainable production
    household income
    Bangladesh
    palm husbandry
    Palm Action Plan
    Opis:
    Betel Nut and Coconut are two important crops in the homesteads and farmlands of South-Eastern region of Bangladesh. An exploratory survey to assess the cultivation, contribution and importance of palm husbandry in rural economy was conducted at Ramu upazila under Cox’s Bazar District, Bangladesh. A total of 120 households’ heads were interviewed who were selected following stratified random selection method. The findings revealed that betel nut contributes 19.06% (78345 TK) of total annual household income whereas coconut contributes 6.07% (25017 TK). Orchard, pond bank, homestead and road sides were the four cultivation sites of both palms. Orchards were at top of farmer’s preference for cultivating betel nuts while homesteads are of greater preference to farm holders for coconut trees. Annual production of betel nut was highest (547 betel nuts per tree) at their 11-20 years age range. Annual production per coconut tree was maximum (58 coconuts) at 21-30 years age class. The availability of palm trees of different age classes reflects a sustainable production system of betel nut and coconuts in the study area. Palm husbandry could be a promising sector of rural economy in Bangladesh if the marketing system is well developed reducing involvement of middlemen in the business.
    Źródło:
    Environment, Earth and Ecology; 2019, 3, 1; 24-34
    2543-9774
    2451-4225
    Pojawia się w:
    Environment, Earth and Ecology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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