Literature search We conducted systematic literature searches in the ISI Web of Science, PubMed and CNKI databases using search terms (e.g. “medicinal plant”, “herbal drug”, “herbal medicine”, “aromatic plant”, and “Chinese medicine”) and keyword combinations (e.g. “in situ conservation”, “ex situ conservation”, “sustainable use”, and “cultivation practice”) to retrieve the abstracts of relevant articles (Fig. 1). The literature search spanned the period from January 2000 to December 2014, and the languages were limited to English and Chinese. We carefully reviewed all retrieved abstracts to find articles that were suitable according to the inclusion criteria (Table ). For literature focusing on the conservation and/or sustainable use of medicinal plants, we retrieved full articles from fulltext databases (ScienceDirect, Wiley, Biomed, Springer, Medline, Scopus, Elsevier, Highwire, Mcgill, Cogprints, Emedicine, Nature and Science online). From the initial search, a total of 673 ...
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