@article{oai:soar-ir.repo.nii.ac.jp:00002211,
 author = {渡辺,  隆一 and 大久保,  明紀子 and 井田,  秀行},
 journal = {信州大学教育学部附属志賀自然教育研究施設研究業績},
 month = {Mar},
 note = {The leaf phenology of Betula ermanii was observed in Shiga Heights, central Japan from 1985 to 2004. During this period, 5 birches were selected and their phenological traits analyzed using succes- sive automatic daily photography. The annual variation of mean temperature at this monitor station, specifically over the last 10 years, has become increasingly warm. According to observable facts, these birches have gradually tended to accelerate the time of leaf flushing and delay the time of leaf coloring. This process is indispensable in clarifying the effects of global warming on ecosystems while continuing similar monitoring in/for the future., Article, 信州大学教育学部附属志賀自然教育研究施設研究業績 43: 13-16(2006)},
 pages = {13--16},
 title = {志賀高原における温暖化の植物季節への影響：1986年-2004年の定点写真からのダケカンバの開葉日・黄葉日の年変動},
 volume = {43},
 year = {2006}
}