To locate environmental law review articles, which are scholarly, in-depth, and heavily foot-noted, such as the Vermont Journal of Environmental Law, use Westlaw, Lexis, Bloomberg Law, or HeinOnline. Another possibility is SSRN (the Social Science Research Network) which contains a great many open-access law review articles.
Also, check out the Environmental Law Journals section of the VLS Environmental Law Research Sources database.
You will find references to articles in a variety of sources. The recommendations of resources, listed above are excellent suggestions. You may, of course, use other resources and strategies to your advantage.
To locate environmental articles that do not specifically deal with the law, VLS subscribes to a number of relevant databases including JSTOR, Expanded Academic ASAP, Environment Complete, Sustainability Science Abstracts, Environment Abstracts, etc.