CAJ | 학술논문

萨哈林岛(库叶岛)和北海道的末次冰期沉积含丰富的落叶松花粉.为了搞清楚落叶松花粉百分比和实际森林密度的关系,我们系统地分析了从苔原、森林苔原以及泰加林的表土样品.根据孢粉资料恢复了两个岛屿3万年以来的植被和气候.两个岛上3万年前后以云杉与落叶松共生的森林为主,松和冷杉出现在比现代相对较冷和干的气候条件下.萨哈林岛在末次冰盛期的草原和泰加林主要由落叶松和松组成,和现在西伯利亚东北部的泰加林相似.在北海道末次冰盛期的草原和泰加林主要由落叶松、松以及云杉组成,气候更加干冷.在新仙女木期森林苔原分布到中萨哈林岛,而北海道的草原和泰加林以落叶松为主,气候可能比末次冰盛期还要冷.在l万年前两个岛的落叶松含量都开始下降,6000年前在北海道消失.萨哈林岛的落叶松则残存至今.
살합림도(고협도)화북해도적말차빙기침적함봉부적락협송화분.위료고청초락협송화분백분비화실제삼림밀도적관계,아문계통지분석료종태원、삼림태원이급태가림적표토양품.근거포분자료회복료량개도서3만년이래적식피화기후.량개도상3만년전후이운삼여락협송공생적삼림위주,송화랭삼출현재비현대상대교랭화간적기후조건하.살합림도재말차빙성기적초원화태가림주요유락협송화송조성,화현재서백리아동북부적태가림상사.재북해도말차빙성기적초원화태가림주요유락협송、송이급운삼조성,기후경가간랭.재신선녀목기삼림태원분포도중살합림도,이북해도적초원화태가림이락협송위주,기후가능비말차빙성기환요랭.재l만년전량개도적락협송함량도개시하강,6000년전재북해도소실.살합림도적락협송칙잔존지금.
Larix pollen is abundant in the Last Glacial sediments of Sakhalin and Hokkaido islands. To clarify the relationbetween the pollen percentage of Larix and its stand density, surface samples from tundra, forest tundra and taiga in the FarEast Russia were analyzed. On the basis of surface pollen data, vegetation and climate since 30 ka in both islands werereconstructed. Around 30 ka, taiga of dominant Picea coexisted with Larix, Pinus and Abies was distributed in both islandsunder relatively colder and drier climate than at present. During the LGM, bog and taiga were mainly composed of Larix andPinus in Sakhalin, which could be correlated to the present northeast Siberian taiga. In Hokkaido, grassland and taiga weremainly consisted ofLarix, Pinus and Picea. Climate was colder anddrier than that around 30 ka. During Younger Dryas, foresttundra occurred in middle Sakhalin. In Hokkaido, contemporary vegetation was grassland and taiga characterized by thepredominance of Larix. Climate was colder and drier than at LGM. Larix began to decrease in both islands at 10 ka. Itdisappeared till 6 ka in Hokkaido, however it survived in Sakhalin until the present.