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Comparison of short term and long term SOC stock change in rice field rotated with energy crop |
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| รหัสดีโอไอ | |
| Title | Comparison of short term and long term SOC stock change in rice field rotated with energy crop |
| Creator | 1. Nittaya Cha-un 2. Sirintornthep Towprayoon |
| Publisher | Joint Graduate School of Energy and Environment |
| Publication Year | 2557 |
| Keyword | soil organic carbon, short term SOC, long term SOC, rice field, energy crop, crop rotation |
| Abstract | This study focused on investigation of soil organic carbon change in short term and long term from abandoned rice field reclaimed by energy crop rotated with rice. The field experiment was designed in abandoned rice field from Aug 2009 to Jan 2013 at King Mongkut's University of Technology Thonburi, Ratchaburi campus, Thailand. The four crop rotation systems designed to fallow land- rice (RF), rice-rice (RR), corn-rice (RC), and sweet sorghum-rice (RS). The SOC stock at 0-15 cm of soil depth was estimated by equivalent soil mass method (ESM). The site mode of DNDC model (version 9.3) used to estimate the long term SOC stock change. In short term of field experiment, the SOC stocks changed from the initial soil through the land use change, tillage and crop rotation practices. The SOC stock from 1st to 2nd crop in RR was significant 33% increasing and from 2nd to 3rd crop in RF, RC and RS was significant increased 38%, 37% and 42%, respectively. Long term simulation, SOC stock in RR, RC and RS was higher 42%, 33% and 25% than fallow-rice crop system, respectively. The energy crop rotation in rice field able to maintain soil carbon storage in long term. |
| ISBN | 978-616-92228-1-1 |
