DOI: 10.1016/j.atmosenv.2015.09.065
Scopus记录号: 2-s2.0-84944879579
论文题名: Effects of tillage practices and straw returning methods on greenhouse gas emissions and net ecosystem economic budget in rice-wheat cropping systems in central China
作者: Zhang Z ; S ; , Guo L ; J ; , Liu T ; Q ; , Li C ; F ; , Cao C ; G
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 122 起始页码: 636
结束页码: 644
语种: 英语
英文关键词: Economic benefit
; Global warming potential
; Greenhouse gas intensity
; No-tillage
; Straw returning
Scopus关键词: Agricultural machinery
; Agriculture
; Budget control
; Carbon
; Crops
; Cultivation
; Ecology
; Ecosystems
; Environmental technology
; Gas emissions
; Global warming
; Grain (agricultural product)
; Greenhouse gases
; Organic carbon
; Soil conservation
; Soils
; Conservation tillage
; Economic and environmental benefits
; Economic benefits
; Global warming potential
; No tillage
; Rice-wheat cropping systems
; Sustainable technology
; Total Organic Carbon
; Economic and social effects
; agricultural emission
; alternative agriculture
; crop yield
; cropping practice
; global warming
; greenhouse gas
; net ecosystem production
; rice
; soil carbon
; straw
; tillage
; wheat
; Article
; carbon footprint
; China
; conservation tillage
; cropping system
; ecosystem
; grain yield
; greenhouse effect
; greenhouse gas
; growing season
; harvest
; harvesting
; no tillage
; priority journal
; rice
; sandy loam
; seasonal variation
; straw
; straw returning
; total organic carbon
; wheat
; China
; Triticum aestivum
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: Significant efforts have been devoted to assess the effects of conservation tillage (no-tillage [NT] and straw returning) on greenhouse gas (GHG) emissions, global warming potential (GWP), greenhouse gas intensity (GHGI), and net economic budget in crop growing seasons. However, only a few studies have evaluated the effects conservation tillage on the net ecosystem economic budget (NEEB) in a rice-wheat cropping system. Therefore, a split-plot field experiment was performed to comprehensively evaluate the effects of tillage practices (i.e., conventional intensive tillage [CT] and NT) and straw returning methods (i.e., straw returning or removal of preceding crop) on the soil total organic carbon (TOC), GHG emissions, GWP, GHGI, and NEEB of sandy loam soil in a rice-wheat cropping system in central China. Conservation tillage did not affect rice and wheat grain yields. Compared with CT and straw removal, NT and straw returning significantly increased the TOC of 0-5 cm soil layer by 2.9% and 7.8%, respectively. However, the TOC of 0-20 cm soil layer was not affected by tillage practices and straw returning methods. NT did not also affect the N2O emissions during the rice and wheat seasons; NT significantly decreased the annual CH4 emissions by 7.5% and the annual GWP by 7.8% compared with CT. Consequently, GHGI under NT was reduced by 8.1%. Similar to NT, straw returning did not affect N2O emissions during the rice and wheat seasons. Compared with straw removal, straw returning significantly increased annual CH4 emissions by 35.0%, annual GWP by 32.0%, and annual GHGI by 31.1%. Straw returning did not also affect NEEB; by contrast, NT significantly increased NEEB by 15.6%. NT without straw returning resulted in the lowest GWP, the lowest GHGI, and the highest NEEB among all treatments. This finding suggested that NT without straw returning may be applied as a sustainable technology to increase economic and environmental benefits. Nevertheless, environmentally straw returning methods should be considered in future studies. © 2015 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81386
Appears in Collections: 气候变化事实与影响
There are no files associated with this item.
作者单位: MOA Key Lab. of Crop Ecophysiology and Farming System in the Middle Reaches of the Yangtze River, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China; Hubei Collaborative Innovation Center for Grain Industry, Jingzhou, Hubei, China; No.1, Shizishan Street, Hongshan District, Wuhan City, Hubei Province, China
Recommended Citation:
Zhang Z,S,, Guo L,et al. Effects of tillage practices and straw returning methods on greenhouse gas emissions and net ecosystem economic budget in rice-wheat cropping systems in central China[J]. Atmospheric Environment,2015-01-01,122