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2015 Fiscal Year Final Research Report

Srudy on hot monent inducing the abrupt change of ecosystem nitrogen cycle under climate change

Research Project

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Project/Area Number 25252026
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Research Field Forest science
Research InstitutionHokkaido University

Principal Investigator

SHIBATA Hideaki  北海道大学, 北方生物圏フィールド科学センター, 教授 (70281798)

Co-Investigator(Kenkyū-buntansha) TODA Hiroto  東京農工大学, (連合)農学研究科(研究院), 教授 (00237091)
MIYAMOTO Toshizumi  北海道大学, (連合)農学研究科(研究院), 講師 (00343012)
INAGAKI Yoshiyuki  国立研究開発法人・森林総合研究所, 四国支所, 主任研究員 (00353590)
FUKUZAWA Karibu  北海道大学, 北方生物圏フィールド科学センター, 助教 (10456824)
UGAWA Shin  鹿児島大学, 農水産獣医学域農学系, 准教授 (30582738)
ISOBE Kazuo  東京大学, 大学院農学生命科学研究科, 助教 (30621833)
HISHI Takuo  九州大学, (連合)農学研究科(研究院), 准教授 (50423009)
TATENO Ryunosuke  京都大学, フィールド科学教育研究センター, 准教授 (60390712)
SASAI Takahiro  筑波大学, 生命環境系, 助教 (70443190)
SUWA Yuichi  中央大学, 理工学部, 教授 (90154632)
ENOKI Tsutomu  九州大学, (連合)農学研究科(研究院), 准教授 (10305188)
Co-Investigator(Renkei-kenkyūsha) SAIGUSA Nobuko  国立研究開発法人・国立環境研究所, 地球環境研究センター, 主任研究員 (00251017)
OHTE Nobuhito  京都大学, 大学院情報学研究科, 教授 (10233199)
FUKUSHIMA Keitaro  首都大学東京, 都市環境学部, 特任助教 (60549426)
Project Period (FY) 2013-04-01 – 2016-03-31
Keywords窒素循環 / 凍結-融解サイクル / 生物地球化学 / 土壌窒素無機化・硝化 / 土壌微生物 / 現地操作実験
Outline of Final Research Achievements

This research project aimed to clarify the pattern of abrupt changes of soil environment, vegetation process and dynamics on ecosystem nitrogen cycles during the period between dormant and growing periods, and analyze their impacts on the ecosystem processes and functions including primary productivity, nutrient retention and the environmental conservation functions of the ecosystem during the growing season. Our results indicated that soil freeze-thaw cycle was amplified due to the snowpack decrease in winter, causing the alteration of sol microbe biomass and soil nitrogen mineralization and nitrification. It was suggested that those environment changes in winter impacted to nitrogen cycles of the ecosystem during the growing season.

Free Research Field

生物地球化学

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Published: 2017-05-10  

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