辽宁省生态经济系统能值分析

运用能值分析方法，对辽宁省生态经济系统1990—2005年的能值流量和由于资源输入、产出、消耗所带来的环境压力及其与可持续发展的关系进行了研究.结果表明，辽宁省总能值用量中有74%以上是不可更新资源，2005年实际人口超过可承载人口的326倍；研究期间，能值产出率从65.40减少到10.13，环境负荷率由2.72上升到7.18，可持续发展指数从24.03下降到1.41.支撑辽宁省经济较快增长的主要是不可更新资源的大量消耗，研究区经济发展对生态系统的压力越来越大，对外部资源的依赖逐渐增强，系统可持续发展能力不断下降.要实现区域可持续发展必须以减量化、再利用、资源化为准则，促进废物再利用和资源的闭合式良性循环，以实现废弃物的最小排放.

Emergy analysis of ecological-economic system in Liaoning Province.

By the methods of emergy analysis, this paper studied the emergy flow in the ecological-economic system in Liaoning Province in 1990-2005, and the relationships between the environmental stress caused by resources' input, output and consumption and the sustainable development of the Province. The results showed that in Liaoning Province, the non-renewable resources occupied over 74% of the total consumed emergy, and the realistic population in 2005 was 3.26 times higher than the supportable population. In 1990-2005, the emergy yield ratio decreased from 65.40 to 10.13, emergy loading ratio increased from 2.72 to 7.18, and emergy sustainable index decreased from 24.03 to 1.41. The rapid economic growth in Liaoning Province was chiefly supported by the consumption of vast non-renewable resources, which caused the pressure of economic development on ecosystem getting more and more intense, the economic development increasingly depending on exogenous resources, and the sustainable development of Liaoning ecological-economic system having a continuing decrease. To realize the sustainable development in Liaoning Province, the principles of reduction, reutilization and recycling should be taken as the guidelines for promoting the reuse of wastes and the closed fine circulation of resources to minimize the discharge of wastes.