The Energy Flow and Mineral Cycles in a Zoysia japonica and Miscanthus sinensis Ecosystem on Mt. Kwanak 1. The Standing Crop and Production Structure

관악산의 잔디와 억새 생태계에 있어서 에너지의 흐름과 무기물의 순환 1. 현존량과 물질 생산구조

A Zoysia japonica and Miscanthus sinensis grasslands of north-west side on Mt. Kwanak were investigated The most important species in this area were Zoysia japonica and Miscanthus sinensis These two species contributed greatly to the standing crops of live material, which were in excess of 598. 4g /$m^2$ and 698. 7g /$m^2$ during the growing season, respectively. This value would he ucreased if the production of the moss and algal mats which cover the soil surface during the growing season was included. The productive structures of the Zoysia japonica and Mliscanthus si nen sis grasslands were short and long height types of the grasslands, respectively. Key words: Standing crop, Production structure.