Greenhouse gas emissions, soil carbon sequestration and crop yields in a rain-fed rice field with crop rotation management

บทความในวารสาร

ผู้เขียน/บรรณาธิการ

กลุ่มสาขาการวิจัยเชิงกลยุทธ์

ไม่พบข้อมูลที่เกี่ยวข้อง

รายละเอียดสำหรับงานพิมพ์

รายชื่อผู้แต่ง: Cha-un N., Chidthaisong A., Yagi K., Sudo S., Towprayoon S.

ผู้เผยแพร่: Elsevier

ปีที่เผยแพร่ (ค.ศ.): 2017

วารสาร: Agriculture, Ecosystems and Environment (0167-8809)

Volume number: 237

หน้าแรก: 109

หน้าสุดท้าย: 120

จำนวนหน้า: 12

นอก: 0167-8809

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85006913789&doi=10.1016%2fj.agee.2016.12.025&partnerID=40&md5=a5b1b78c070461f471ef40aac1180de9

ภาษา: English-Great Britain (EN-GB)

ดูในเว็บของวิทยาศาสตร์ | ดูบนเว็บไซต์ของสำนักพิมพ์ | บทความในเว็บของวิทยาศาสตร์

บทคัดย่อ

Field experiments of two consecutive years (2010–2011) were conducted to investigate the effect of crop-rice rotation systems on greenhouse gas (GHG) emissions, soil carbon sequestration, and rice yield. Rotation crops were cultivated in the dry season, while rain-fed rice was grown in the wet season. Four different treatments were investigated: fallow-rice (RF), rice–rice (RR), corn-rice (RC) and sweet sorghum-rice (RS). The closed-chamber method was used for flux measurements of methane (CH4), nitrous oxide (N2O) and carbon dioxide (CO2) in the field. Parameters such as soil carbon budgets (SCBs), soil organic carbon (SOC) stocks, and crop yields were also measured. In this study, it was found that RC and RS rotations reduced CH4 emissions by 78–84%, and reduced net CO2 equivalent emissions (CH4 and N2O) by 68–78%, as compared with RR. After two consecutive years of crop cultivation, SCBs were reclaimed by positive values in the RC and RR treatments. The SOC stocks were maintained in the RR, RC and RS treatments, but decreased in the RF. Although RF also reduced the net CO2 equivalent emissions by 72–84% as compared with RR, there were losses in soil carbon sequestration and agricultural land utilization. The rice grain yields of RC and RS were stable in both years, while RF fell slightly by 11%, and RR significantly reduced by 39% from the first year. © 2016 Elsevier B.V.

คำสำคัญ

Rain-fed rice field, Rice yield, Soil carbon budget, Soil organic carbon stock