摘要
本文运用能值理论对湖南省生态经济系统进行定量分析与评估,结果表明:2004年湖南省生态经济系统中,总能值用量为2.23×1023sej,其中可更新资源能值为3.52×1022sej,不可更新资源产品的能值为2.08×1023sej;货币流能值6.21×1023sej,其中进口能值为1.07×1022sej,出口能值为3.09×1022sej;废弃物能值为4.11×1021sej,占全省总能值用量的1.84%;能值自给率达95.20%,净能值产出率为23.72,净出口能值2.02×1022sej,人均能值使用量达3.32×1015sej.人-1,能值使用密度1.05×1012sej.m-2,能值货币比率为3.33×1012sej.$-1,能值投资率为4.36%,电力能值占总能值使用量的12.60%,环境负荷率为5.34,可更新资源所能承载的人口为1056.90×104人,资源的总人口承载为8455.18×104人。并以此为依据,提出该省生态经济系统可持续发展的相应措施。
A quantitative analysis and an evaluation of the eco-economic system of Hunan Province were performed on the basis of emergy theory. The results show that in 2004, total emergy used in Hunan Province is 2.23×10^23 sej, including renewable emergy flow （3.52 ×10^22 sej） and non-renewable emergy flow （2.08 ×10^23 sej）. Emergy value in money flow is 6.21 ×10^23 sej, including import-emergy flow （ 1.07 ×10^22 sej） and export-emergy flow （3.09 ×10^22 sej）. Total waste emergy is 4.11 ×10^21 sej, 1.84% of total emergy of the province. Ratios of self-support emergy and net emergy yield are 95.20% and 23.72, respectively. Net-export emergy, per-capita emergy, emergy density, emergy/dollar ratio and emergy investment ratio are 2.02 x 1022 sej, 3.32 ×10^15 sej, 1.05×10^12sej- m^-2 , 3.33 ×10^12 sej- $^-1 and 4.36% respectively. Ratio of electric power to total emergy is 12.6% , environmental loading ratio is 5.34, carrying capacity of renewable energy is 1 056.90 ×10^4 persons and total carrying capacity is 8 455.18×10^4 persons. On the basis of the results, vital suggestions are advanced for the sustainable development of eco-economic system in Hunan Province.
出处
《中国生态农业学报》
CAS
CSCD
2008年第2期488-494,共7页
Chinese Journal of Eco-Agriculture
基金
河南科技学院重点科研项目(040112)资助
关键词
能值
生态经济系统
可持续发展
湖南省
Emergy, Eco-economic system, Sustainable development, Hunan Province
