Effects of straw returning and feeding on greenhouse gas emissions from integrated rice-crayfish farming in Jianghan Plain, China

Environmental Science and Pollution Research International
Zichuan SunJinping Wang

Abstract

Great efforts have been devoted to assessing the effects of straw managements on greenhouse gas (GHG) emissions, global warming potential (GWP), and net economic budget in rice monoculture (RM). However, few studies have evaluated the effects of straw managements on GHG emissions and net ecosystem economic budget (NEEB) in integrated rice-crayfish farming (RC). Here, a randomized block field experiment was performed to comprehensively evaluate the effects of aquatic breeding practices (feeding or no feeding of forage) and straw managements (rice straw returning or removal) on soil NH4+-N and NO-3-N contents, redox potential (Eh), CH4 and N2O emissions, GWP, and NEEB of fluvo-aquic paddy soil in a rice-crayfish co-culture system in Jianghan Plain of China. We also compared the differences in CH4 and N2O emissions, GWP, and NEEB between RM and RC. Straw returning significantly increased CH4 and N2O emissions by 34.9-46.1% and 6.2-23.1% respectively compared with straw removal. Feeding of forage decreased CH4 emissions by 13.9-18.7% but enhanced N2O emissions by 24.4-33.2% relative to no feeding. Compared with RM treatment, RC treatment decreased CH4 emissions by 18.1-19.6% but increased N2O emissions by 16.8-21.0%. Moreover, RC t...Continue Reading

References

May 26, 2001·Applied and Environmental Microbiology·G Eller, P Frenzel
Apr 23, 2008·Archives of Environmental Contamination and Toxicology·Chengfang LiShahrear Ahmad
Nov 16, 2011·Proceedings of the National Academy of Sciences of the United States of America·Jian XieXin Chen
Oct 12, 2016·The Science of the Total Environment·Guochun XuYuhao Hang
Jun 2, 2018·Environmental Science and Pollution Research International·Feng ShengCheng-Fang Li

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Citations

Sep 26, 2020·Environmental Science and Pollution Research International·Shi-Hao LiCheng-Fang Li
Dec 19, 2020·Journal of the Science of Food and Agriculture·Jun HouXinxin Ye
Jul 30, 2021·The Science of the Total Environment·Geng SunHua Wang
Aug 21, 2021·The Science of the Total Environment·Ling LinCao Cougui

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