摘要
运用能值理论与方法,对焉耆盆地1997—2006年的能值投资率、净能值产出率、环境负荷率、能值利用强度、人均能值使用量、电力能值使用比和可持续发展指数等7个指标及其变化趋势进行分析,并与其他国家和地区的有关指标进行比较研究。分析结果表明:(1)1997—2006年焉耆盆地的净能值产出率为非匀速上升的趋势,从1997年的1.856上升到2006年的1.888。这表明焉耆盆地向外界输出的能值高于区内对其投入的能值,是一个资源输出型的生态经济区域;(2)焉耆盆地的可持续发展指数与净能值产出率变化趋势相反,从1997年的1.70下降到2006年的1.43。这表明从1997—2006年焉耆盆地被开发和利用的程度有所增加,经济有了一定程度发展,但开发程度仍然较低,经济上处于不发达的阶段;(3)环境负荷率的变化呈上升趋势。这说明焉耆的进口资源及劳务的能值用量增大,尽管如此,由于环境负荷率较低,焉耆盆地的经济发展仍有较大的潜力。
The present study was designed to analyze the seven indexes and their change of oasis agricultural economic ecosystem in Yanqi Basin from 1997 to 2006. The research results showed that: (1) the emergy value yield decreased from 1. 856 in 1997 to 1. 888 in 2006 ,which indicates Yanqi is an export-oriented economic region with emergy value exporting to the outsides; (2) the indexes curve of sustainable development in Yanqi Basin went by on thecontrary of change trend of the net energy value yield from 1.70 in 1997 to 1. 43 in 2006,which indicates Yanqi has made certain progress in resource utilization and economic development, but it is still a less-developed region; (3) the environmental load rate of Yanqi increased, which indicates the requirement amount of import resources and energy value of service in Yanqi were increased. Therefore, there is still greater potential for further economic development.
出处
《新疆农业大学学报》
CAS
北大核心
2009年第3期59-64,共6页
Journal of Xinjiang Agricultural University
基金
国家“973”前期研究专项(2007CB416604)
水利部科技创新项目(200802050)
关键词
焉耆盆地
种植业系统
能值分析
可持续性评估
Yanqi basin
crop cultivation system
emergy value analysis
sustainable countermeasures