摘要
应用奥德姆(H.T.Odum)创立的生态经济系统能值(emergy)分析理论和方法,定量分析广西恭城瑶族自治县月柿生态农业旅游经济系统的物流和能流,以期为当地和中国欠发达地区的可持续发展提供科学依据。研究结果表明:2004年,该县红岩月柿生态“农业-旅游”经济系统经济投入为12.74×105$,经济产出为35.47×105$,实现经济净收益22.73×105$。与原生态农业系统相比,复合系统在经济投入增加17.2%的情况下,经济产出增加126%以上,经济净收益约为原生态农业系统的4.75倍,经济产投比由原系统的1.44变为复合系统的2.78。发展生态旅游之后,当地新的生态农业旅游系统在环境投入不变的情况下,增加对环境资源的经济反馈9.24×1017sej,使能值产出增加9.79×1018sej,新系统净效益是原生态农业系统的4.74倍,净能值产出率为原生态农业系统的1.94倍,能值投资率比原生态农业系统提高17%。研究结果还指出:目前恭城县红岩月柿生态农业旅游经济系统正处于发展的初级阶段。
The emergy analysis of ecological economic system theory and approach established by H.T. Odum was applied to quantitatively analyze the optimization and logistics of the Hongyan persimmon based ecological agricultural tourism economy in Gongcheng Yao Autonomous Country of Guangxi, with the purpose of providing scientific basis for future sustainable development in the region and other less developed economic input into the county＇s Hongyan persimmon based ＇ regions of China. Our research data indicate that in 2004 the agri-tourism＂ economic system was 12.74 × 10^5 $ , while output was 35.47 × 10^5 $ , with a net profit of 22.73 × 10^5 $. Compared to pure ecological agricultural system, the composite system had an increase of 17.2% in economic input and 126% in economic output, the net profit was 4.75 times compared to the pure ecological agricultural system, and the ratio of output over input in the composite system was 2.78, as opposed to 1.44 in the pure system. After the development of ecological tourism, the environmental input of the region＇secological agri-tourism system remained unchanged, while the economic feedback to environmental resources was 9.24 × 10^17 sej, with an emergy output increase of 9.79 × 10^18 sej. The net profit of the new system 4.74 times of the pureecological agricultural system, the ratio of net emergy output was 1.94 times of the pure the emergy investment ratio increased 17% compared to the pure ecological agricultural indicates that the Hongyan persimmon based ecological agri-tourism economic system in of development. Suggestions on its future development are discussed. ecological agricultural system, and system. The research data further Gongcheng is still at an early stage of development. Suggestions on its future development are discussed.
出处
《生态学报》
CAS
CSCD
北大核心
2007年第3期1056-1064,共9页
Acta Ecologica Sinica
基金
广西壮族自治区科技厅科技攻关资助项目(0632008-3)~~
关键词
能值分析
生态农业
农业旅游经济
emergy analysis
ecological agriculture
agri-tourism economy
