가야산국립공원 식물종의 생물계절성 연구

Abstract

ThisstudyaimedtoconductphenologymonitoringoffforestplantspeciesinGayasanNational Park and utilize the result as basic materials for stable conservation of plant genetic resources and biogeographical long-term prediction and management system for them. Indicator plants were monitored and the result was that the blooming time of most plants became later by two days to even one month in 2011 compared to 2010. In most trees, the time when blossoms fell became later in 2011 than in 2010 except for Trientalis europaea var. arctica Linaeus, Lindera obtusiloba, and The time when leaves fell also became later in 2011 than in 2010 in all species except for the above three. This is probably because continuously falling temperatures or frequently changing weather and rainfalls have affected physiological characteristics of plants. The time when leaves turned also became later in 2011 than in 2010 in most species except for Lindera obtusiloba and Pedicularis verticillata. The time when leaves fell started two to three weeks earlier in 2011 relative to 2010 in most indicator plants. This is considered to be because extreme weathers in 2011 resulted in rainfalls three times as high as those in other ordinary years, sunlight irradiation smaller by 35% than in other ordinary years, hot weather warnings issued, and late summer heat that continued until the mid September. Irregularity in physiological cycles of some indicator plants is regarded to be because of differences in each individual plant’s physiological and environmental traits.