Arid
DOI10.1002/ldr.2468
Long-Term Durum Wheat-Based Cropping Systems Result in the Rapid Saturation of Soil Carbon in the Mediterranean Semi-arid Environment
Novara, Agata; Poma, Ignazio; Sarno, Mauro; Venezia, Giacomo; Gristina, Luciano
通讯作者Novara, Agata
来源期刊LAND DEGRADATION & DEVELOPMENT
ISSN1085-3278
EISSN1099-145X
出版年2016
卷号27期号:3页码:612-619
英文摘要

Climate, soil physical-chemical characteristics, land management, and carbon (C) input from crop residues greatly affect soil organic carbon (SOC) sequestration. According to the concept of SOC saturation, the ability of SOC to increase with C input decreases as SOC increases and approaches a SOC saturation level. In a 12-year experiment, six semi-arid cropping systems characterized by different rates of C input to soil were compared for ability to sequester SOC, SOC saturation level, and the time necessary to reach the SOC saturation level. SOC stocks, soil aggregate sizes, and C inputs were measured in durum wheat monocropping with (Ws) and without (W) return of aboveground residue to the soil and in the following cropping systems without return of aboveground residue to soil: durum wheat/fallow (Wfall), durum wheat/berseem clover, durum wheat/barley/faba bean, and durum wheat/Hedysarum coronarium. The C sequestration rate and SOC content were lowest in Wfall plots but did not differ among the other cropping systems. The C sequestration rate ranged from 0.47MgC ha(-1)y(-1) in Ws plots to 0.66MgCha(-1)y(-1) in W plots but was negative (-0.06MgCha(-1)y(-1)) in Wfall plots. Increases in SOC were related to C input up to a SOC saturation value; over this value, further C inputs did not lead to SOC increase. Across all cropping systems, the C saturation value for the experimental soil was 57.7Mgha(-1), which was reached with a cumulative C input of 15Mgha(-1). Copyright (c) 2015 John Wiley & Sons, Ltd.


英文关键词SOC sequestration duration and rate soil carbon saturation durum wheat straw
类型Article
语种英语
国家Italy
收录类别SCI-E
WOS记录号WOS:000373949600015
WOS关键词ORGANIC-CARBON ; NO-TILLAGE ; CONVENTIONAL-TILLAGE ; CONSERVATION TILLAGE ; NITROGEN-FERTILIZER ; AGRICULTURAL SOILS ; MATTER ; WATER ; STABILIZATION ; AGGREGATION
WOS类目Environmental Sciences ; Soil Science
WOS研究方向Environmental Sciences & Ecology ; Agriculture
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/194934
作者单位Univ Palermo, Dipartimento Sci Agr & Forestali, Viale Sci, I-90128 Palermo, Italy
推荐引用方式
GB/T 7714
Novara, Agata,Poma, Ignazio,Sarno, Mauro,et al. Long-Term Durum Wheat-Based Cropping Systems Result in the Rapid Saturation of Soil Carbon in the Mediterranean Semi-arid Environment[J],2016,27(3):612-619.
APA Novara, Agata,Poma, Ignazio,Sarno, Mauro,Venezia, Giacomo,&Gristina, Luciano.(2016).Long-Term Durum Wheat-Based Cropping Systems Result in the Rapid Saturation of Soil Carbon in the Mediterranean Semi-arid Environment.LAND DEGRADATION & DEVELOPMENT,27(3),612-619.
MLA Novara, Agata,et al."Long-Term Durum Wheat-Based Cropping Systems Result in the Rapid Saturation of Soil Carbon in the Mediterranean Semi-arid Environment".LAND DEGRADATION & DEVELOPMENT 27.3(2016):612-619.
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