6Zhou Zhenfeng1,2,Sun Lei2,Sun Yinglan2 1.College of Resources&Environment,Laiyang Agricultural College,Qingdao,Shandong 266109,China,2.School of Environmental Science and Engineering,Ocean University of China,Qingdao,Shandong 266003,China.Research on Indicator System of Regional Eco-efficiency:A Case Study of Chengyang District[J].Chinese Journal of Population,Resources and Environment,2006,4(4):54-58. 被引量：4
