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タイトルRelationship between microbial biomass and extractable organic carbon content in volcanic and non-volcanic ash soil
作成者Nishiyama, Masaya
Sumikawa, Yuko
Guan, Gang
Marumoto, Takuya
作成者ヨミニシヤマ, マサヤ
スミカワ, ユウコ
Guan, Gang
マルモト, タクヤ
作成者別表記西山, 雅也
関, 鋼
丸本, 卓哉
作成者所属山口大学農学部
内容記述(抄録等)A significant portion of plant-available nutrients is derived from the transformations of soil organic matter through microbial biomass. Therefore, it is important to elucidate the factors determining the amount of soil microbial biomass. Using five volcanic ash and five non-volcanic ash soils from Japan, we investigated the relationships between the amount of microbial biomass and several fractions of soil organic C. A portion of each soil sample was amended with plant debris. After 3?6 months incubation, the microbial biomass C was measured by chloroform fumigation-extraction and soil organic C was extracted with 0.5 M K2SO4, 1 M KNO3, or cold water. When all soil samples were taken into consideration, microbial biomass C was correlated with the amount of 1 M KNO3- (r=0.577**) or cold water- (r=0.561**) extractable organic C. When the volcanic and non-volcanic ash soils were extracted with 0.5 M K2SO4, it was possible to discriminate between the organic C of the two groups of soils. The amounts of microbial biomass (r=0.683**) and 1 M KNO3-extractable organic C (r=0.863**) correlated well with hot water-extractable organic C. The results may indicate that the 1 M KNO3-extractable fraction is the major fraction of soil organic C that controls the amount of microbial biomass irrespective of the soil type.
本文言語eng
著者キーワードandosols
extractable soil organic C
soil microbial biomass
主題農学
資料タイプtext
出版者Elsevier
NII資料タイプ学術雑誌論文
査読の有無査読あり
ISSN0929-1393
NCIDAA11002364
掲載誌名Applied Soil Ecology
17
2
開始ページ183
終了ページ187
発行日2001-06
DOIinfo:doi/10.1016/S0929-1393(01)00131-7
関連情報URL(IsPartOf)http://www.sciencedirect.com/science/journal/09291393
著者版/出版社版その他
リポジトリID2007020071
地域区分山口大学
URIhttp://www.lib.yamaguchi-u.ac.jp/yunoca/handle/2007020071