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Energy Balance Analysis in Hainan Province's Agriculture Sector

文献类型： 外文期刊

作者： Liu Haiqing 1 ; Liu Enping 1 ;

作者机构： 1.Inst Sci & Technol Informat CATAS, Danzhou 571737, Hainan, Peoples R China

关键词： Energy analysis;Energy ratio;Input-output;Agriculture;Hainan

期刊名称：MECHANICAL ENGINEERING AND INTELLIGENT SYSTEMS, PTS 1 AND 2

ISSN： 1660-9336

年卷期： 2012 年 195-196 卷

页码：

收录情况： SCI

摘要： This paper collected energy input-output data of Hainan Province agriculture sector in 21 years (1988-2008).All the direct and indirect inputs of energy for the production of main crops in Hainan were evaluated.The inputs and outputs were calculated by multiplying the amounts of inputs and outputs by their energy equivalents.The results showed that total energy input increased from 16.06 in 1988 to 38.39GJha(-1) in 2008, total output energy increased from 83.92 in 1988 to 149.06GJha(-1) in 2008. The net energy gain was a positive value,but a majority of the input energy emanates from non-renewable sources of energy.The energy ratio was estimated to be 5.04 and showed a declining trend during the period.This indicates that increased use of inputs ha(-1) in production was accompanied by a much less increase in the output levels.Improvements in fertilizer application can significantly affect the energy efficiency of Hainan agriculture sector.

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