Abstract
There are several types of protection such as "protection" and "conservation" in nature conservation policy. In addition, the objectives of protection are wide ranging, from "nature" to "biodiversity". This study aims at revealing changes in the concept of nature conservation policy through the analysis of the transition in the terms of the IUCN General Assembly resolutions. The results show that "protection" of "nature" changed into "conservation" of "ecosystems" and "biodiversity", and then into "recovery" requiring more pro-active response. As for resources, genetic resources of plants have attracted attention.