干旱区生态环境知识资源中心(Arid): CO2 emission affected by moisture content and aggregate sizes in a calcareous soil of Comarca Lagunera, Mexico

Arid

DOI	10.36783/18069657rbcs20210129
	CO2 emission affected by moisture content and aggregate sizes in a calcareous soil of Comarca Lagunera, Mexico
	Martinez-Santiago, Santos; Sergio Benedicto-Valdes, Gerardo; Lopez-Santos, Armando; Victoria Silva-Rojas, Hilda; Ojeda-Trejo, Enrique; Marcela Ramirez-Lopez, Elsa
通讯作者	Benedicto-Valdés, GS
来源期刊	REVISTA BRASILEIRA DE CIENCIA DO SOLO
ISSN	0100-0683
EISSN	1806-9657
出版年	2022
卷号	46
英文摘要	Soil CO2 emissions are formed from biotic and abiotic processes related to organic carbon (SOC) and inorganic carbon (SIC), respectively. Calcareous soil has a high amount of SIC and occurs mainly in arid areas, and little is known about CO2 emissions from aggregates of this soil. This study aims to evaluate the emission of CO2 of aggregates from calcareous soil in the Comarca Lagunera, Mexico. Soil samples were taken from the layers of 0.00-0.15 and 0.15-0.30 m, and soil physical and chemical properties were determined. Aggregates distribution was obtained using the dry-sieving method. Macro (0.25-0.149 mm), meso (0.149-0.074 mm) and microaggregates (<0.074 mm) were selected for incubation in a dynamic closed system for 30 days under two moisture contents (15 and 30 %, dry weight basis). The CO2 emissions were quantified using a non-dispersive infrared gas analyzer (IRGA). From total carbon measured, 97 % were found to be SIC. Soil texture is a sandy clay loam with a field capacity and a permanent wilting point of 27 and 17 %, respectively. From whole soil aggregates, 60 % were distributed in fractions lower than 0.25 mm diameter, which are highly erodible by the wind. Soil moisture content had a significant effect on the emission of CO2. The highest accumulated CO2 emission was registered in the superficial layer (0.00-0.15 m) within 0.25 mm aggregates (29.4 g m(-2) h(-1)), which turned out higher than reported for similar areas. The CO2 emissions were attributed to the dissolution - reprecipitation process of high concentrations of SIC present in soil, involving a considerable contribution of CO2 to the atmosphere.
英文关键词	soil respiration soil incubation soil carbonates soil moisture
类型	Article
语种	英语
开放获取类型	gold, Green Published
收录类别	SCI-E
WOS记录号	WOS:000778562000001
WOS关键词	INORGANIC CARBON ; ORGANIC-CARBON ; RESPIRATION ; WATER ; SEQUESTRATION ; VEGETATION ; DYNAMICS ; MANAGEMENT ; STABILITY ; RESPONSES
WOS类目	Soil Science
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/394279
推荐引用方式 GB/T 7714	Martinez-Santiago, Santos,Sergio Benedicto-Valdes, Gerardo,Lopez-Santos, Armando,et al. CO2 emission affected by moisture content and aggregate sizes in a calcareous soil of Comarca Lagunera, Mexico[J],2022,46.
APA	Martinez-Santiago, Santos,Sergio Benedicto-Valdes, Gerardo,Lopez-Santos, Armando,Victoria Silva-Rojas, Hilda,Ojeda-Trejo, Enrique,&Marcela Ramirez-Lopez, Elsa.(2022).CO2 emission affected by moisture content and aggregate sizes in a calcareous soil of Comarca Lagunera, Mexico.REVISTA BRASILEIRA DE CIENCIA DO SOLO,46.
MLA	Martinez-Santiago, Santos,et al."CO2 emission affected by moisture content and aggregate sizes in a calcareous soil of Comarca Lagunera, Mexico".REVISTA BRASILEIRA DE CIENCIA DO SOLO 46(2022).