新疆玛纳斯河流域绿洲生态经济能值分析

OASIS ECOLOGIC ECONOMIC EMERGY ANALYSIS IN MANAS RIVER BASIN

绿洲生态经济系统的特殊性决定了其生态耦合进化的机制和功能。用能值理论、方法计算、衡量和比较山地、绿洲、荒漠间能量流动、储存或转化的耦合机理和系统表达,为绿洲生态经济系统研究提供了科学理论和方法。玛纳斯河流域能值自给率达98.06%,可更新资源能值比率65%,山地、荒漠是MODS耦合的生态支撑条件;总能值使用量仅有0.52×1023sej/a,进口能值比例仅为13.46%,能值投入率0.09,人均能值使用量仅为1.12×1010sej/a,均低于世界平均水平;能值使用强度仅有1.22×1011sej/a,环境负荷率仅为12.12,能值产出率1.22,资源强度较弱,环境负荷率较低,应在立足区域特色优良低能值资源发展生态经济的同时,引进关键稀缺性高能值资源,加强高能值产品的反馈支持和贸易输出,在夯实生态流能值基础的同时释放能值利用及转换潜力。

Oasis ecologic economics system＇s composition structure and its ecologic flows particularity decided its coupling relations and coupLing function. With the analysis theory and method for computing, weighing and comparing the coupling mechanism and system of the energy flow, storage or transformation between mountain, oasis and deserts, it will provides the scientific theory and method for the ecologic coupling. The emergy self- sufficiency ratio in MANAS basin is 98.06%. The renewable resource emergy ratia is 65%. Mountain and deserts is the main ecologic strut condition for MODS coupling, total amount of emergy use is 0.52× 10^23 sej/a, import emergy ratio is 13.46%, emergy investment ratio is 0.09, emergy per person is 1.12 × 10^10 sej/a, it is all lower than the world level. Emergy use intensity is only 1.22 × 10^11 sej/ a, environment load is only 12.2, emergy yield ratio is 1.22, its resources development intensity is weaker, its environment load is lower. So while based regional characteristic fine lower emergy quality resources to develop ecologic economy, oasis development must introduce key scarce high emergy resources, strengthen the high emergy＇value product the feedback support and the trade output, and while so Lidded the ecology class emergy foundation simultaneously discharge the emergy use and its transformation potential.