桂林市生态经济系统的能值分析及可持续发展研究  

Emergy Analysis and Sustainable Development on Eco-Economic System of Guilin

作　　者：徐子涵[1] 成官文[1] 王浩[1] 付弘源[1] 卢国丹[1] 覃平[1] 

机构地区：[1]桂林理工大学环境科学与工程学院,广西桂林541004

出　　处：《桂林理工大学学报》2012年第1期115-120,共6页Journal of Guilin University of Technology

基　　金：广西教育厅研究生教育创新计划项目(200910596R01)

摘　　要：运用能值分析理论,对桂林市2003—2008年的净能值产出率、能值货币比率、能值投资率等9个指标的变化趋势进行分析。结果表明:(1)净能值产出率由5.748上升到6.749,表明桂林市生态经济系统净效益上升,生产效率有所提高;(2)环境负荷率呈上升趋势,显示环境压力增大;(3)可持续发展性能的能值指标从2.710急剧下降到0.865,反映桂林市可持续发展能力明显减弱。需要调整产业结构,大力发展循环经济。By the emergy theory, the eco-economic system of Guilin is analyzed, which has related to net emer- gy yield ratio（ EYR）, emergy dollar ratio（EDR） and emergy investment ratio（EIR）. About 9 indexes are in- eluded and analyzed in the trend of development. The conclusions are：（ 1 ）The net emergy yield ratio（EYR） of Guilin rose from 5.748 in 2003 to 6. 749 in 2008, indicating the improvement of net benefits of eco-eeonomic system in Guilin and the production efficiency. （2）The trend of ascended environment loading ratio （ELR） of Guilin suggests the environmental pressure increased. （3）The emergy index for sustainable development（EISD） of Guilin decreased from 2. 710 in 2003 to 0. 865 in 2008, suggesting the quick diminished ability of sustainable development. It indicates that the development of Guilin enhances its ecosystem pressure and the region sustain- ability decreases. Accordingly, suggestions about improving Guilin sustainable development are presented.

关 键 词：能值分析 生态经济系统 可持续发展 桂林市 

分 类 号：X196[环境科学与工程—环境科学] F062.2[经济管理—政治经济学]