干旱区生态环境知识资源中心(Arid): Simulation of soil carbon changes due to conventional systems in the semi-arid region of Brazil: adaptation and validation of the century model

Arid

DOI	10.1080/17583004.2021.1962978
	Simulation of soil carbon changes due to conventional systems in the semi-arid region of Brazil: adaptation and validation of the century model
	de Araujo Neto, Renato Americo; Ferreira Maia, Stoecio Malta; Althoff, Tiago Diniz; Pellegrino Cerri, Carlos Eduardo; de Carvalho, Andre Luiz; Cezar Menezes, Romulo Simoes
通讯作者	Neto, RAD (corresponding author), Univ Fed Alagoas, Agr Sci Ctr, BR-57100000 Rio Largo, AL, Brazil.
来源期刊	CARBON MANAGEMENT
ISSN	1758-3004
EISSN	1758-3012
出版年	2021
卷号	12 期号:4 页码:399-410
英文摘要	Soils play an important role on the global carbon cycle, but conventional land use practices generate negative impact by reducing soil organic carbon (SOC) content. Studies regarding the use of mathematical models on the magnitude of such impacts are scarce in semi-arid regions, but they are essential to broaden the understanding of the effects of cropping systems and help in proposing more rational land use alternatives. However, mathematical models (e.g. Century) must be previously calibrated and validated to present satisfactory results. Therefore, the aim of the present study was to validate the Century model for simulating SOC dynamics in areas of native vegetation and estimating SOC stocks on the adoption of agricultural systems in the semi-arid region of Brazil with a previous calibrated model. The study was carried out in three soil types (Quartzipsamments, Psamments and Ultisol), located in the state of Alagoas, north-eastern Brazil, adopting conventional (with minimal use of machinery) agricultural land-use practices under rainfed conditions. Simulations consisted of validating the model with previously calibrated parameters from another area of the Brazilian semi-arid region. The results showed that the model proved to be effective in simulating SOC dynamics in areas of native vegetation in the semi-arid region of Alagoas (PBIAS ranging from 20 to -9%); however, it needs further adjustment for satisfactory SOC simulation in agricultural/pasture systems. The results showed that conventional systems of agricultural crops and pasture in the semi-arid region of Brazil lead to losses (2673 g C m(-2) in native vegetation to 1960 g C m(-2) in conventional systems) between 22% and 35%, (PBIAS variating -9 to 49%) and that SOC stocks reach a new steady state between 30 and 40 years after conversion from native vegetation into agriculture (ranging from 24 to 42% in different soil types).
英文关键词	Conventional agriculture modelling pasture soil organic matter steady state
类型	Article
语种	英语
收录类别	SCI-E ; SSCI
WOS记录号	WOS:000682497600001
WOS关键词	LAND-USE CHANGE ; ORGANIC-CARBON ; NITROGEN STOCKS ; AGROFORESTRY SYSTEMS ; MANAGEMENT-PRACTICES ; MATTER ; IMPACT ; FOREST ; POOLS ; SEQUESTRATION
WOS类目	Environmental Sciences ; Environmental Studies
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/362777
作者单位	[de Araujo Neto, Renato Americo; de Carvalho, Andre Luiz] Univ Fed Alagoas, Agr Sci Ctr, BR-57100000 Rio Largo, AL, Brazil; [Ferreira Maia, Stoecio Malta] Fed Inst Educ Sci & Technol Alagoas, Marechal Deodoro, AL, Brazil; [Althoff, Tiago Diniz; Cezar Menezes, Romulo Simoes] Univ Fed Pernambuco, Recife, PE, Brazil; [Pellegrino Cerri, Carlos Eduardo] Univ Sao Paulo, Luiz de Queiroz Coll Agr, Piracicaba, SP, Brazil
推荐引用方式 GB/T 7714	de Araujo Neto, Renato Americo,Ferreira Maia, Stoecio Malta,Althoff, Tiago Diniz,et al. Simulation of soil carbon changes due to conventional systems in the semi-arid region of Brazil: adaptation and validation of the century model[J],2021,12(4):399-410.
APA	de Araujo Neto, Renato Americo,Ferreira Maia, Stoecio Malta,Althoff, Tiago Diniz,Pellegrino Cerri, Carlos Eduardo,de Carvalho, Andre Luiz,&Cezar Menezes, Romulo Simoes.(2021).Simulation of soil carbon changes due to conventional systems in the semi-arid region of Brazil: adaptation and validation of the century model.CARBON MANAGEMENT,12(4),399-410.
MLA	de Araujo Neto, Renato Americo,et al."Simulation of soil carbon changes due to conventional systems in the semi-arid region of Brazil: adaptation and validation of the century model".CARBON MANAGEMENT 12.4(2021):399-410.