干旱区生态环境知识资源中心(Arid): Carbon dioxide mitigation potential of conservation agriculture in a semi-arid agricultural region

Arid

DOI	10.3934/agrfood.2019.1.206
	Carbon dioxide mitigation potential of conservation agriculture in a semi-arid agricultural region
	McDonald, Mark D.; Lewis, Katie L.; Ritchie, Glen L.; DeLaune, Paul B.; Casey, Kenneth D.; Slaughter, Lindsey C.
通讯作者	McDonald, MD
来源期刊	AIMS AGRICULTURE AND FOOD
ISSN	2471-2086
出版年	2019
卷号	4 期号:1 页码:206-222
英文摘要	The Texas High Plains (THP) region is one of the largest upland cotton (Gossypium hirsutum L.) producing regions in the world. Cotton is a versatile crop with uses for both food and fiber products. Conservation management practices such as no-tillage and cover crops have been used to reduce wind erosion on the THP but are also associated with mitigating and reducing greenhouse gas (GHG) emissions from soil. Although row-crop agriculture has been linked to GHG emissions across the world, cotton production in the THP ecoregion has not been thoroughly evaluated for its contribution to GHG production. This research quantified the soil flux of carbon dioxide (CO2-C) from continuous cotton production systems on the THP after implementing three tillage practices: (1) no-till with a winter wheat cover crop (NTW); (2) no-till winter fallow (NT); and (3) conventional tillage winter fallow (CT). In addition, the timing of nitrogen fertilizer application was evaluated within each tillage system. Five N treatments were implemented: (1) an unfertilized control; (2) 100% pre-plant (PP); (3) 100% side-dressed (SD); (4) 40% PP 60% SD; and (5) 100% PP with a nitrogen stabilizer product (STB). Tillage practice affected CO2-C flux rates in spring 2016 and 2017 with the NTW system having greater CO2-C flux than the NT and CT systems. In summer 2017, the NTW system had a greater flux of CO2-C than the NT or CT systems. In fall/winter 2016, the NTW and CT systems had a greater CO2-C flux than the NT system. Cumulative emissions of CO2-C were affected by N treatment in 2016, with later season applications of N fertilizer increasing emissions compared to the STB treatment and the control. In 2017, cumulative emissions of CO2-C were greater in the NTW system than in the NT and CT system. However, a greater amount of CO2-C was assimilated by the wheat cover crop from the atmosphere than was lost from the soil which reduced net C losses from the system. With continued use of no-tillage and a cover crop, lower net soil CO2-C losses should result in a greater rate of soil organic C gain, positively impacting the sustainability of cotton production in the THP.
英文关键词	carbon dioxide carbon assimilation no-tillage cover crops nitrogen timing carbon balance soil greenhouse gas emissions
类型	Article
语种	英语
开放获取类型	DOAJ Gold
收录类别	ESCI
WOS记录号	WOS:000461487000016
WOS关键词	GREENHOUSE-GAS EMISSIONS ; SOIL RESPIRATION ; CO2 EVOLUTION ; ORGANIC-MATTER ; IN-SITU ; NITROGEN ; TILLAGE ; INCREASES ; SEQUESTRATION ; TEMPERATURE
WOS类目	Agriculture, Multidisciplinary ; Agronomy
WOS研究方向	Agriculture
Scopus学科分类	Texas Tech Univ, Lubbock, TX 79409 USA.
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/333444
作者单位	[McDonald, Mark D.; Lewis, Katie L.; Ritchie, Glen L.] Texas A&M Univ, Texas A&M AgriLife Res, Lubbock, TX 79403 USA; [McDonald, Mark D.; Lewis, Katie L.; Ritchie, Glen L.; Slaughter, Lindsey C.] Texas Tech Univ, Lubbock, TX 79409 USA; [DeLaune, Paul B.] Texas A&M AgriLife Res, Vernon, TX USA; [Casey, Kenneth D.] Texas A&M AgriLife Res, Amarillo, TX USA
推荐引用方式 GB/T 7714	McDonald, Mark D.,Lewis, Katie L.,Ritchie, Glen L.,et al. Carbon dioxide mitigation potential of conservation agriculture in a semi-arid agricultural region[J],2019,4(1):206-222.
APA	McDonald, Mark D.,Lewis, Katie L.,Ritchie, Glen L.,DeLaune, Paul B.,Casey, Kenneth D.,&Slaughter, Lindsey C..(2019).Carbon dioxide mitigation potential of conservation agriculture in a semi-arid agricultural region.AIMS AGRICULTURE AND FOOD,4(1),206-222.
MLA	McDonald, Mark D.,et al."Carbon dioxide mitigation potential of conservation agriculture in a semi-arid agricultural region".AIMS AGRICULTURE AND FOOD 4.1(2019):206-222.