ダウンロード数: 210
このアイテムのファイル:
ファイル | 記述 | サイズ | フォーマット | |
---|---|---|---|---|
2014JG002851.pdf | 1.94 MB | Adobe PDF | 見る/開く |
完全メタデータレコード
DCフィールド | 値 | 言語 |
---|---|---|
dc.contributor.author | Sakabe, Ayaka | en |
dc.contributor.author | Kosugi, Yoshiko | en |
dc.contributor.author | Takahashi, Kenshi | en |
dc.contributor.author | Itoh, Masayuki | en |
dc.contributor.author | Kanazawa, Akito | en |
dc.contributor.author | Makita, Naoki | en |
dc.contributor.author | Ataka, Mioko | en |
dc.contributor.alternative | 坂部, 綾香 | ja |
dc.date.accessioned | 2015-07-30T04:27:00Z | - |
dc.date.available | 2015-07-30T04:27:00Z | - |
dc.date.issued | 2015-04-14 | - |
dc.identifier.issn | 2169-8953 | - |
dc.identifier.uri | http://hdl.handle.net/2433/198880 | - |
dc.description.abstract | We examined the effects of Asian monsoon rainfall on CH[4] absorption of water-unsaturated forest soil. We conducted a 1 year continuous measurement of soil CH[4] and CO[2] fluxes with automated chamber systems in three plots with different soil characteristics and water content to investigate how temporal variations in CH[4] fluxes vary with the soil environment. CH[4] absorption was reduced by the “Baiu” summer rainfall event and peaked during the subsequent hot, dry period. Although CH[4] absorption and CO[2] emission typically increased as soil temperature increased, the temperature dependence of CH[4] varied more than that of CO[2], possibly due to the changing balance of activities between methanotrophs and methanogens occurring over a wide temperature range, which was strongly affected by soil water content. In short time intervals (30 min), the responses of CH[4] and CO[2] fluxes to rainfall were different for each plot. In a dry soil plot with a thick humus layer, both fluxes decreased abruptly at the peak of rainfall intensity. After rainfall, CO[2] emission increased quickly, while CH[4] absorption increased gradually. Release of accumulated CO[2] underground and restriction and recovery of CH[4] and CO[2] exchange between soil and air determined flux responses to rainfall. In a wet soil plot and a dry soil plot with a thinner humus layer, abrupt decreases in CH[4]fluxes were not observed. Consequently, the Asian monsoon rainfall strongly influenced temporal variations in CH[4] fluxes, and the differences in flux responses to environmental factors among plots caused large variability in annual budgets of CH[4] fluxes. | en |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | American Geophysical Union | en |
dc.rights | © 2015 American Geophysical Union | en |
dc.rights | 許諾条件により本文ファイルは2015-10-14に公開. | ja |
dc.title | One year of continuous measurements of soil CH4 and CO2 fluxes in a Japanese cypress forest: Temporal and spatial variations associated with Asian monsoon rainfall | en |
dc.type | journal article | - |
dc.type.niitype | Journal Article | - |
dc.identifier.ncid | AA12077675 | - |
dc.identifier.jtitle | Journal of Geophysical Research: Biogeosciences | en |
dc.identifier.volume | 120 | - |
dc.identifier.issue | 4 | - |
dc.identifier.spage | 585 | - |
dc.identifier.epage | 599 | - |
dc.relation.doi | 10.1002/2014JG002851 | - |
dc.textversion | publisher | - |
dc.startdate.bitstreamsavailable | 2015-10-14 | - |
dcterms.accessRights | open access | - |
出現コレクション: | 学術雑誌掲載論文等 |
このリポジトリに保管されているアイテムはすべて著作権により保護されています。