资源环境审计的经济效果研究：以长江经济带为例：take the Yangtze River Economic Zone as an example take the Yangtze River Economic Zone as an example 区域创新系统中的协同效应理论与实证研究：以长三角为例：take the Yangtze River Delta region as an example 资源型地区可持续发展战略研究：以呼包银榆经济区为例：taking the Hoholt-Baotou-Yinchuan-Yulin economic zone as an example 农业非点源污染研究：以沱江流域为例：take Tuojiang River Basin as an example take the Yangtze River Delta region as an example