摘要
Abstract
The spatiotemporal evolution of Xi'an urban agriculture's eco-efficiency between 2004-2014 was analyzed by using SBM-undesirable model.The results were as follows:(1) Its eco-efficiency presented a downward trend,decreasing from 0.881 in 2004 to 0.819 in 2014,the number of the relative DEA effectiveness' districts/counties reduced from 7 in 2004 to 6 in 2014,and the space difference in the eco-efficiency as a whole was gradually increased from 0.189 in 2004 to 0.234 in 2014.(2) In terms of eco-efficiency between 2004-2014,Baqiao District,Yanta District,Yanliang District,Chang'an District and Lantian County were good,but other 5 districts/counties were poor,and the factors leading to poor eco-efficiency were different in different areas and various years.The major factors were the underused technical and management resources and the redundant investment scale.(3)In 2014 Weiyang District,Lintong District,Zhouzhi County and Hu County were zero in redundancy rate of total agricultural output value,but among them there were different degrees of redundancy in inputs and non-point source pollution,indicating that the causes leading to their low eco-efficiency were not inadequate in expected output but there were underused investment resources and thus produced environmental pollution.关键词
都市农业/生态效率/西安市/SBM-undesirable模型Key words
Urban agriculture/Eco-efficiency/Xi'an City/SBM-undesirable model分类
管理科学
