CAJ | 학술논문

运用能值理论和方法,文章从能值流量、能值效率及系统可持续性3个方面构建了廊坊市产业生态系统的能值评价指标体系.结果表明:研究期间总能值、输入能值、输出能值增幅最大,不可更新环境资源能值占总能值使用量的比重很大,分别为85.30%(1998a)、95.50%(2005a)和95.30%(2009a);人均能值从9.46×1015sej(1998a)增加到4.47×1016sej(2009a),能值自给率较高,分别为98.20%(1998a)、98.70%(2005a)和97.40%(2009a),但是环境负荷率由7.10(1998a)上升到46.70(2009a),人口承载量远小于实际人口数量;可持续发展指数由7.88(1998a)降为0.82(2009a),呈现出显著的递减趋势,生态效率指数则是先递增后快速递减的变化趋势,系统呈现出不可持续发展的态势.
운용능치이론화방법,문장종능치류량、능치효솔급계통가지속성3개방면구건료랑방시산업생태계통적능치평개지표체계.결과표명:연구기간총능치、수입능치、수출능치증폭최대,불가경신배경자원능치점총능치사용량적비중흔대,분별위85.30%(1998a)、95.50%(2005a)화95.30%(2009a);인균능치종9.46×1015sej(1998a)증가도4.47×1016sej(2009a),능치자급솔교고,분별위98.20%(1998a)、98.70%(2005a)화97.40%(2009a),단시배경부하솔유7.10(1998a)상승도46.70(2009a),인구승재량원소우실제인구수량;가지속발전지수유7.88(1998a)강위0.82(2009a),정현출현저적체감추세,생태효솔지수칙시선체증후쾌속체감적변화추세,계통정현출불가지속발전적태세.
Using emergy theory and method, this article construct emergy evaluation index system from three aspects: emergy flow, emergy efficiency and system sustainability of Langfang industrial ecosystem. The results show that in studying period U, IMP and EXP increasing most, the proportion of N/U accounted for 85.30%(1998a)、95.50%(2005a) and 95.30%(2009a); EPP increased from 9.46×1015sej(1998a)to 4.47×1016sej(2009a), emergy self-reliance rate is higher, respectively for 98.20%(1998a)、98.70%(2005a) and 97.40%(2009a), however, ELR rise from 7.10(1998a)to 46.70 (2009a), PCC is far less than the actual population; ESI drop from 7.88 (1998a)to 0.82 (2009a), presenting a significant decrease tendency, EEI first diminishing then increasing rapidly, industrial ecosystem presents unsustainable development trend.