This is Kuriyama.
Just I would like to let you know interesting view points from UN Sustainable Development journal.
Title: Is the concept of a green economy a useful way of framing policy discussions and policymaking to promote sustainable development?
http://onlinelibrary.wiley.com/doi/10.1111/j.1477-8947.2011.01347.x/pdf
This paper argues many aspects of “Green Economy”, contrasting with “Sustainable Development”.
In my understanding, Green Economy is a tinner concept than Sustainable concept. G much focus on resource and energy efficiency while SD include Economic, environmental and social aspects.
Written by 栗山昭久