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| Titel: |
Energy Flow in Agriculture: Bangladesh |
| Auteur: |
M.S. Alam, M.R. Alam K.K. Islam |
| Verschenen in: |
American journal of environmental sciences |
| Paginering: | Jaargang 1 (2005) nr. 3 pagina's 213-220 |
| Jaar: |
2005 |
| Inhoud: |
In this paper, a qualitative energy flow analysis in Bangladesh agriculture has been made fora period from 1980-81 to 2000-01 to evaluate the impact of energy input to produce output. Human &animal muscle power and machinery energy for tillage operation, electricity and diesel energy forirrigation, fertilizer and pesticides energy for growth and protection are taken into account. Energyvalues are calculated by multiplying respective quantity by their respective energy equivalents with theuse of relevant conversion factors. Energy flow studied based on some energy dependent indicators:energy input per ha, energy output per ha, energy output to input ratio, mechanization index, energyinput to generate per unit GDP output as well as per unit output in energy term and solar energyconversion efficiency. During the study period, energy input and output to Bangladesh agriculturewere increased from 6.4 to 17.32 GJ ha 1 and 72.22 to 130.05 GJ ha 1 , respectively. It is found thatenergetic efficiency (energy output to input ratio) was declined from 11.28% to 8.1%, which indicatesthat the energy input increased faster than energy output. It is expected that sustainable energy flow inBangladesh agriculture can be ascertained by this study. |
| Uitgever: |
Science Publications (provided by DOAJ) |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 30 van 78 gevonden artikelen
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