https://repository.kopri.re.kr/handle/201206/13411 Tue, 07 Apr 2026 15:56:40 GMT 2026-04-07T15:56:40Z https://repository.kopri.re.kr/handle/201206/14507 Title: Carbon and Nitrogen Dynamics in the high Arctic Dry Tundra Authors: Jung, Ji Young Wed, 26 Jul 2023 00:00:00 GMT https://repository.kopri.re.kr/handle/201206/14507 2023-07-26T00:00:00Z https://repository.kopri.re.kr/handle/201206/14132 Title: Soil properties and molecular compositions of soil organic matter in four different Arctic regions Authors: Jeong, Sujeong; Nam, Sungjin; Jung, Ji Young Abstract: The Arctic permafrost stores enormous amount of carbon (C), about one third of global C stocks. However, drastically increasing temperature in the Arctic makes the stable frozen C stock vulnerable to microbial decomposition. The released carbon dioxide from permafrost can cause accelerating C feedback to the atmosphere. Soil organic matter (SOM) composition would be the basic information to project the trajectory of C under rapidly changing climate. However, not many studies on SOM characterization have been done compared to quantification of SOM stocks. Thus, the purpose of our study is to determine soil properties and molecular compositions of SOM in four different Arctic regions. We collected soils in different soil layers from 1) Cambridge Bay, Canada, 2) Council, Alaska, USA, 3) Svalbard, Norway, and 4) Zackenberg, Greenland. The basic soil properties were measured, and the molecular composition of SOM was analyzed through pyrolysis-gas chromatography/mass spectrometry (py-GC/MS). Sat, 01 Jan 2022 00:00:00 GMT https://repository.kopri.re.kr/handle/201206/14132 2022-01-01T00:00:00Z