論文

査読有り
2008年2月

Influence of crop rotation system on the spatial and temporal variation of the soil organic carbon budget in northern Kazakhstan

SOIL SCIENCE AND PLANT NUTRITION
  • Yusuke Takata
  • ,
  • Shinya Funakawa
  • ,
  • Junta Yanai
  • ,
  • Azusa Mishima
  • ,
  • Kanat Akshalov
  • ,
  • Norio Ishida
  • ,
  • Takashi Kosaki

54
1
開始ページ
159
終了ページ
171
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1111/j.1747-0765.2007.00217.x
出版者・発行元
BLACKWELL PUBLISHING

To optimize regional crop rotation systems to mitigate soil organic carbon (SOC) depletion, monitoring the spatial and temporal variation of the SOC budget is of major importance. This study evaluated the influence of crop rotation and topography on the spatial and temporal variation of the SOC budget under cereal cropping in northern Kazakhstan using a geostatistical method, predicted equations of CO2 emission and Moderate Resolution Imaging Spectroradiometer satellite images. The study was carried out in large-scale upland fields (7,915 ha) located in Shortandy, Aqmorinskaya Oblast, from 2001 to 2005. Under the assumption that all crop residue was incorporated into the soil, average annual C input as plant residues in cereal and abandoned fields ranged from 1.0 to 1.6 Mg C ha(-1) year(-1), with higher values in wet years. Average annual CO2 emission in the cereal fields and the fallow fields ranged from 1.0 to 1.2 Mg C ha(-1) year(-1) and from 0.7 to 0.8 Mg C ha(-1) year(-1), respectively. In relation to topography, CO2 emission was higher on the north-facing slope than the south-facing slope, with the highest values on the higher plateau, and the average annual carbon budget ranged from -0.1 to 0.3 Mg C ha(-1) year(-1). It should be noted that all fallow fields consistently had a negative carbon budget. The 5-year carbon budget for different crop rotation systems ranged from -0.5 (fallow-based rotation) to 0.6 (wheat-based 5-year continuous cereal cropped) Mg C ha(-1). These results have some uncertainly because of the low predictive ability of the regression; however, the results indicated that fallow-based and barley-based crop rotation systems were depletive and conversion of the wheat-fallow system to continuous wheat cropping would sequestrate 0.1-0.3 Mg ha(-1) year(-1) of carbon into the soil.

リンク情報
DOI
https://doi.org/10.1111/j.1747-0765.2007.00217.x
J-GLOBAL
https://jglobal.jst.go.jp/detail?JGLOBAL_ID=200902279501222263
CiNii Articles
http://ci.nii.ac.jp/naid/110007326839
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000252210500017&DestApp=WOS_CPL
ID情報
  • DOI : 10.1111/j.1747-0765.2007.00217.x
  • ISSN : 0038-0768
  • J-Global ID : 200902279501222263
  • CiNii Articles ID : 110007326839
  • Web of Science ID : WOS:000252210500017

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