关键词：控制器；红杉和国王峡谷国家公园；自然资源条件评价
摘 要：Climate is a master controller of the structure, composition, and function of biotic communities, affecting them both directly, through physiological effects, and indirectly, by mediating biotic interactions and by influencing disturbance regimes. Sequoia and Kings Canyon National Parks (SEKIs) dramatic elevational changes in biotic communities -- from warm mediterranean to cold alpine -- are but one manifestation of climates overarching importance in shaping SEKIs landscape.