期刊文献+

Carbon Dioxide Fluxes and Concentrations in a Cotton Field in Northwestern China:Effects of Plastic Mulching and Drip Irrigation 被引量:29

Carbon Dioxide Fluxes and Concentrations in a Cotton Field in Northwestern China:Effects of Plastic Mulching and Drip Irrigation
原文传递
导出
摘要 In northwestern China, there has been a change from traditional cultivation system (TC) with no mulching and flood irrigation to a more modern cultivation system (MC) using plastic film mulching with drip irrigation. A field study was conducted to compare soil 'C02 concentrations and soil surface COs fluxes between TC and MC systems during a cotton growing season. CO2 concentrations in the soil profile were higher in the MC system (3107-9212μL L-1) than in the TC system (1 275-8994 μL L-1) but the rate of CO2 flux was lower in the MC system. Possible reasons for this included decreased gas diffusion and higher soil moisture due to the mulching cover in the MC system, and the consumption of soil CO2 by weathering reactions. Over the whole cotton growing season, accumulated rates of CO2 flux were 300 and 394 g C m-2 for the MC and TC systems, respectively. When agricultural practices were converted from traditional cultivation to a plastic film mulching system, soil CO2 emissions could be reduced by approximately 100 g C m-2 year-1 in agricultural lands in arid and/or semi-arid areas of northern and northwestern China. In northwestern China,there has been a change from traditional cultivation system (TC) with no mulching and flood irrigation to a more modern cultivation system (MC) using plastic film mulching with drip irrigation.A field study was conducted to compare soil CO 2 concentrations and soil surface CO 2 fluxes between TC and MC systems during a cotton growing season.CO 2 concentrations in the soil profile were higher in the MC system (3 107-9 212 μL L-1) than in the TC system (1 275-8 994 μL L-1) but the rate of CO 2 flux was lower in the MC system.Possible reasons for this included decreased gas diffusion and higher soil moisture due to the mulching cover in the MC system,and the consumption of soil CO2 by weathering reactions.Over the whole cotton growing season,accumulated rates of CO2 flux were 300 and 394 g C m-2 for the MC and TC systems,respectively.When agricultural practices were converted from traditional cultivation to a plastic film mulching system,soil CO 2 emissions could be reduced by approximately 100 g C m-2 year-1 in agricultural lands in arid and/or semi-arid areas of northern and northwestern China.
作者 LI Zhi-Guo
出处 《Pedosphere》 SCIE CAS CSCD 2011年第2期178-185,共8页 土壤圈(英文版)
基金 Supported by the National Natural Science Foundation of China (No. 40971148) the Program of 100 Distinguished Young Scientists of the Chinese Academy of Sciences
关键词 agricultural practice carbon cycle greenhouse gas emission soil respiration weathering reaction 二氧化碳通量 中国西北地区 二氧化碳浓度 地膜覆盖 滴灌 塑料薄膜覆盖 TC系统 二氧化碳排放量
  • 相关文献

参考文献34

  • 1JIN Zhao,DONG Yun-She,QI Yu-Chun,M. DOMROES.Precipitation Pulses and Soil CO_2 Emission in Desert Shrubland of Artemisia ordosica on the Ordos Plateau of Inner Mongolia,China[J].Pedosphere,2009,19(6):799-807. 被引量:8
  • 2王跃思,王迎红.Quick Measurement of CH_4, CO_2 and N_2O Emissions from a Short-Plant Ecosystem[J].Advances in Atmospheric Sciences,2003,20(5):842-844. 被引量:128
  • 3Wangang Deng,Weidong Wu,Hailong Wang,Wei Luo,Mark O. Kimberley.Temporal dynamics of iron-rich, tropical soil organic carbon pools after land-use change from forest to sugarcane[J]. Journal of Soils and Sediments . 2009 (2)
  • 4Zhihong Xu,Chengrong Chen,Jizheng He,Juxiu Liu.Trends and challenges in soil research 2009: linking global climate change to local long-term forest productivity[J]. Journal of Soils and Sediments . 2009 (2)
  • 5Jingxia Xie,Yan Li,Cuixia Zhai,Chenhua Li,Zhongdong Lan.CO2 absorption by alkaline soils and its implication to the global carbon cycle[J]. Environmental Geology . 2009 (5)
  • 6J. M. Zobitz,D. J. P. Moore,W. J. Sacks,R. K. Monson,D. R. Bowling,D. S. Schimel.Integration of Process-based Soil Respiration Models with Whole-Ecosystem CO2 Measurements[J]. Ecosystems . 2008 (2)
  • 7P.-A. Jacinthe,R. Lal.Nitrogen fertilization of wheat residue affecting nitrous oxide and methane emission from a central Ohio Luvisol[J]. Biology and Fertility of Soils . 2003 (6)
  • 8Annalea Lohila,Mika Aurela,Kristiina Regina,Tuomas Laurila.Soil and total ecosystem respiration in agricultural fields: effect of soil and crop type[J]. Plant and Soil . 2003 (2)
  • 9Beare,M. H,Gregorich,E. G,St-Georges,P.Com-paction effects on CO2and N2O production during dryingand rewetting of soil. Soil Biology and Biochemisty . 2009
  • 10Fang,C,Moncrieff,J. B.Simple and fast technique tomeasure CO2profiles in soil. Soil Biology and Biochemisty . 1998

二级参考文献3

共引文献134

同被引文献558

引证文献29

二级引证文献328

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部