국립백두대간수목원 꼬리진달래 자생지 환경특성 및 보전방안

Abstract

This research was performed for the purpose of providing useful and base data and preservation strategy of growth characteristics of Rhododendron micranthum. From the result of research, wild growth area of Rhododendron micranthum was discovered near steep forest road on 695∼901m in altitude above sea level of Baekdu-daegan National Arboretum. Vegetation colony structure of SiteⅠwas resulted in Pinus densiflora(tree stratum M.I.P.=45.3%) is dominants, Betula schmidtii(arborescent M.I.P.=9.8%) is second dominant, and SiteⅢ resulted in Pinus densiflora(tree stratum M.I.P.=30.5%) is dominants, Betula schmidtii(arborescent M.I.P.=10.3%) is second dominant. SiteⅡ resulted in Betula schmidtii(arborescent M.I.P.=30.4%) is dominants and Pinus densiflora tree(tree stratum M.I.P.=8.3%) is second dominants. For herbs, it was researched that the rate of one year herb of chrysanthemum family(10), rice family(3), sedge(2) was higher than near forest area. Among Species diversity index, that of Shannon was in range of 0.7348∼1.1090. After comparing this with similar area, this value was relatively low. Dominance analysis result was analyzed that various groups are evenly distributed. Monthly highest average temperature is 23.9° in Site A and Site B, and monthly lowest average temperature is -4.5℃ in SiteⅠand -4.7℃ in SiteⅡ. Monthly maximum average humidity is 85.6% in SiteⅠand 83.2% in SiteⅡ. Monthly minimum average humidity is 60.9% in SiteⅠand 60.8% in SiteⅡand it showed that these 2 area are located far away but have similar temperature and humidity characteristic and climate environment is similar. It was analyzed that humidity is high with the result of annual average humidity is over 60%. In growth characteristic, it showed that doubt damage of Stephanitis pyrioides, exposure of roots, peeled bark was discovered and supplement on this is urgent.