KOPRI Repository

Effects of increased temperature and precipitation on soil biogeochemical processes in Cambridge Bay, Canada

Cited 0 time in wos
Cited 0 time in scopus

Full metadata record

DC Field Value Language
dc.contributor.authorJung, Ji Young-
dc.contributor.authorKwon, Min Jung-
dc.contributor.authorJang, Kyoung-Soon-
dc.contributor.authorKang, Hyunju-
dc.contributor.authorChi, Junhwa-
dc.contributor.authorNam, Sungjin-
dc.contributor.authorKim, Mincheol-
dc.contributor.authorKang, Hojeong-
dc.contributor.authorSeo, Juyoung-
dc.contributor.authorLee, Yoo Kyung-
dc.date.accessioned2021-08-18T07:10:55Z-
dc.date.available2021-08-18T07:10:55Z-
dc.date.issued2019-
dc.identifier.urihttps://repository.kopri.re.kr/handle/201206/12526-
dc.description.abstractIncreasing atmospheric temperature is preferentially higher in the Arctic than the mid or low latitude over the last few decades. Pattern of precipitation is also changing with warming but more unpredictable. We conducted an experiment to examine the effects of increased temperature and precipitation on CO2 flux and soil and microbial properties in the high Arctic Canada since 2012. The study site was Cambridge Bay on the southeast coast of Victoria Island, Nunavut (69° 07' 48" N, 105° 03' 35" W). Carex spp. and Dryas integrifolia are dominant vegetation types in this dry tundra. A full factorial design was used in this warming and wetting experiment. Warming was implemented with a hexagon type of open top chambers (OTCs) with a 2-m diameter, and we added 0.5 mm of water every week throughout summer. The atmospheric and soil temperature increased about 0.48 and 0.65 °C in non-warming plots compared to OTCs, respectively. The relative humidity in OTCs was about 1 % lower than that in non-warming plots. Net ecosystem exchange (NEE) and ecosystem respiration were measured by a manual chamber method. NEE was negative (CO2 uptake > production) during mid July to mid August, and CO2 fluxes during a growing season did not show significant differences among treatments. Inorganic N and water extractable C contents were not significantly different among treatments either. Additionally, we measured the extracelluar enzyme activities associated with C and N dynamics at the same time, however, no apparent relationship was found with CO2 fluxes, inorganic N content, and water extractable C. Currently, we are analyzing microbial biomass through extracting microbial phospholipid fatty acids and dissolved organic matter composition using 15T FT-ICR/MS. We expect to understand the effects of warming and wetting on soil biogeochemical processes and DOM compositions through integrating all results produced in 2018 and 2019.en_US
dc.languageEnglishen_US
dc.language.isoenen_US
dc.titleEffects of increased temperature and precipitation on soil biogeochemical processes in Cambridge Bay, Canadaen_US
dc.title.alternative캐나다 캠브리지 베이에서 온도와 강수량 상승이 토양 생지화학 반응에 미치는 영향en_US
dc.typeProceedingen_US
dc.identifier.bibliographicCitationJung, Ji Young, et al. 2019. Effects of increased temperature and precipitation on soil biogeochemical processes in Cambridge Bay, Canada. 7th International Symposium on Soil Organic Matter. Hilton Adelaide. 2019.10.06~2019.10.11.-
dc.citation.volume38en_US
dc.citation.conferenceDate2019.10.06~2019.10.11en_US
dc.citation.conferenceName7th International Symposium on Soil Organic Matteren_US
dc.citation.conferencePlaceHilton Adelaideen_US
dc.description.articleClassification세미나-학술발표-
dc.subject.keywordDOM compositionen_US
dc.subject.keywordclimate chagneen_US
dc.subject.keywordsoil responsesen_US
dc.identifier.localId2019-0368-
Appears in Collections  
2019-2019, Arctic permafrost environment change monitoring and prediction method developments (19-19) / Lee, Bang Yong (PN19081)
Files in This Item

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse