Continuous cropping under elevated CO2: Differential effects on C4 and C3 crops, soil properties and carbon dynamics in semi-arid alfisols
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- 作者：Ch. Srinivasarao ; Sumanta Kundu ; Arun K. Shanker ; arunshank@gmail.com" class="auth_mail" title="E-mail the corresponding author ; R. Prakash Naik ; M. Vanaja ; K. Venkanna ; G.R. Maruthi Sankar ; V.U.M. Rao
- 关键词：Root ; shoot ; Carbon pools ; Carbon management index ; Open Top Chamber ; C3 and C4 crops ; Climate change
- 刊名：Agriculture, Ecosystems & Environment
- 出版年：2016
- 出版时间：15 February 2016
- 年：2016
- 卷：218
- 期：Complete
- 页码：73-86
- 全文大小：1268 K
文摘
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Continuous cropping was done under eCO2 and effects on crop and soil were studied.
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Biomass increased in all crops in general with eCO2.
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Increase in soil enzymatic activity lead to buildup of labile fraction of carbon.
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Carbon management index and carbon pool index decreased at 700 μmol mol−1 eCO2.
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C4 plants contributed to higher C: N ratio and increased the carbon stock.