CAJ | 학술논문

鉴于生态经济系统的开放性特征,在全面分析生态系统的能量流、物质流的基础上构建了能值-生态足迹模型.采用区域能值密度计算辽河流域15个城市2001-2012年间生态承载力与生态足迹的变化,并且借助GIS技术平台探索流域内生态安全及生态赤字时空演变趋势.12年来辽河流域生态承载力和生态足迹均有所增加,但是生态足迹的增长速度远远大于生态承载力,致使流域内除2001与2009年略有生态盈余外,其余年份均出现生态赤字;生态压力指数虽在波动下降,但整体指数值仍大于1,辽河流域生态安全状况不容乐观;与东辽河地区和西辽河地区相比,辽河中下游地区生态环境状况较差,大部分地区生态安全形势严峻,并且长期出现生态赤字.
감우생태경제계통적개방성특정,재전면분석생태계통적능량류、물질류적기출상구건료능치-생태족적모형.채용구역능치밀도계산료하류역15개성시2001-2012년간생태승재력여생태족적적변화,병차차조GIS기술평태탐색류역내생태안전급생태적자시공연변추세.12년래료하류역생태승재력화생태족적균유소증가,단시생태족적적증장속도원원대우생태승재력,치사류역내제2001여2009년략유생태영여외,기여년빈균출현생태적자;생태압력지수수재파동하강,단정체지수치잉대우1,료하류역생태안전상황불용악관;여동료하지구화서료하지구상비,료하중하유지구생태배경상황교차,대부분지구생태안전형세엄준,병차장기출현생태적자.
In view of the openness characteristics of the ecological economic system, the emergy-footprint model has been built on the basis of analyzing the ecosystem energy flow and material flow. Combined with local re- alities, the ecological carrying capacity and ecological footprint of 15 cities in Liaohe basin have been calculated u- sing regional emergy density. At the same time, ecological security evolution trend was explored by means of GIS technology platform. The results showed that： both ecological carrying capacity and the ecological footprint have been a great increased, yet the growth speed of the ecological footprint is far greater than the ecological carrying ca- pacity. Consequently, it appeared ecological deficit in most years except for the slight ecological surplus in 2001 and 2009. Although the ecological footprint stress index has experienced a slow decline, the overall value still ex- ceeded 1, which resulted in no-safe situation in Liaohe watershed. From the space perspective, compared with the eastern and western of the Liaohe basin, eco-security of the middle and lower reaches is more serious, which be- longs to no-safety state and appears ecological deficit for a long time.