Effects of Soil Compaction and Tillage Practices on Carbon Dioxide Efflux in Northeast China: Evidence from an Incubation Study

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	Effects of Soil Compaction and Tillage Practices on Carbon Dioxide Efflux in Northeast China: Evidence from an Incubation Study
	X. W. Chen, J. M. Yang, A. Z. Liang and X. P. Zhang
刊名	Polish Journal of Environmental Studies
	2016
卷号	25 期号:4 页码:1769-1776
通讯作者	陈学文
中文摘要	Limited information is available for how soil compaction affects carbon dioxide (CO2) efflux under different tillage systems. To improve understanding of the effects of compaction and tillage on soil CO2 efflux, an incubation study consisting of no tillage (NT), moldboard plow (MP), and ridge tillage (RT) was conducted to explore the relationships between CO2 efflux and bulk density, as well as pore size distribution under different levels of bulk densities, and the thresholds of bulk density and the volume of pore size above which CO2 efflux were affected in northeast China. Results showed that there was a significantly negative correlation (r = -0.990, p<0.05; r = -0.986, p<0.05; and r = -0.992, p<0.01, respectively, for NT, MP, and RT) between CO2 efflux and bulk density, whereas the correlation was significantly positive (r ranges from 0.75 to 0.85, p<0.05 for each tillage practice under bulk densities of 1.0-1.6 g/cm(3)) for the volume of small macropores (30-100 mu m). The critical value of bulk density for impeding CO2 efflux was more produced in 1.6 g/cm(3) and the volume of small macropores affected CO2 efflux variation greatly. Ridge tillage is a better tillage practice for impeding soil CO2 efflux than no tillage, as evidenced by the lesser volume of small macropores.
内容类型	期刊论文
源URL	[http://159.226.123.10/handle/131322/7016]
专题	东北地理与农业生态研究所_湿地生态系统管理学科组_期刊论文
推荐引用方式 GB/T 7714	X. W. Chen, J. M. Yang, A. Z. Liang and X. P. Zhang. Effects of Soil Compaction and Tillage Practices on Carbon Dioxide Efflux in Northeast China: Evidence from an Incubation Study[J]. Polish Journal of Environmental Studies,2016,25(4):1769-1776.
APA	X. W. Chen, J. M. Yang, A. Z. Liang and X. P. Zhang.(2016).Effects of Soil Compaction and Tillage Practices on Carbon Dioxide Efflux in Northeast China: Evidence from an Incubation Study.Polish Journal of Environmental Studies,25(4),1769-1776.
MLA	X. W. Chen, J. M. Yang, A. Z. Liang and X. P. Zhang."Effects of Soil Compaction and Tillage Practices on Carbon Dioxide Efflux in Northeast China: Evidence from an Incubation Study".Polish Journal of Environmental Studies 25.4(2016):1769-1776.