[1]XIONG Lin-Jin,ZHOU Zi-ying,XU Zou-hua,et al.Analysis on the Energy of Agro-ecosystem and Assessment of Sustainable Development in Xiangtan[J].Research of Soil and Water Conservation,2013,20(03):249-253.
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Analysis on the Energy of Agro-ecosystem and Assessment of Sustainable Development in Xiangtan
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
20
Number of periods:
2013 03
Page number:
249-253
Column:
Public date:
2013-06-28
- Title:
- Analysis on the Energy of Agro-ecosystem and Assessment of Sustainable Development in Xiangtan
- Keywords:
- energy analysis; energy investment ratio; environmental loading ratio; development index; agro-ecosystem
- CLC:
- F301.24
- DOI:
- -
- Abstract:
- In order to improve agriculture productivity, promote agro-ecosystem sustainable development in Xiangtan, the input-output condition, work efficiency, and environmental load of the agro-ecosystem in Xiangtan were systematically assessed based on the theory and method of energy analysis from 2000 to 2008. The results showed that the renewable organic energy dominated over the majority of energy input in Xiangtan, the agro-ecolomic system in Xiangtan still stayed in the period shifting from traditional to modern agriculture, proportion dropped from 0.58 in 2000 to 0.49 in 2008, which mainly depended on man power. The majority of energy output was forestry, while crop cultivation and fishery had a relatively low percentage, especially the fishery, which didn’t reach to 0.01%. Xiangtan had a low environment load ratio and the resources were not fully developed, thus the agroecosystem had a large development potential; the energy-based sustainable index of agroecosystem in Xiangtan was in ascendant trend, the range varied from 0.03 to 0.11, which showed that the agroecosystem belonged to consumer economic system. To promote the virtuous cycle of agro-economic system in Xiangtan, we should gradually adjust the investment proportion of input and output energy.
- References:
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