干旱区生态环境知识资源中心(Arid): Sink or carbon source? how the Opuntia cactus agroecosystem interacts in the use of carbon, nutrients and radiation in the Brazilian semi-arid region

Arid

DOI	10.1016/j.jhydrol.2023.130121
	Sink or carbon source? how the Opuntia cactus agroecosystem interacts in the use of carbon, nutrients and radiation in the Brazilian semi-arid region
	Jardim, Alexandre Manicoba da Rosa Ferraz; de Morais, Jose Edson Florentino; de Souza, Luciana Sandra Bastos; Marin, Fabio Ricardo; de Moura, Magna Soelma Beserra; Morellato, Leonor Patricia Cerdeira; Montenegro, Abelardo Antonio de Assuncao; Ometto, Jean Pierre Henry Balbaud; de Lima, Joao L. M. P.; Dubeux Jr, Jose Carlos Batista; da Silva, Thieres George Freire
通讯作者	Jardim, AMDF
来源期刊	JOURNAL OF HYDROLOGY
ISSN	0022-1694
EISSN	1879-2707
出版年	2023
卷号	625
英文摘要	Anthropogenic disturbances directly influence environmental processes and increase the concentration of carbon (C) in the atmosphere. Here, we compare the differences in the seasonality of the balance of carbon, energy, and radiation, as well as seek to identify the interrelationships between these environmental variables and their impact on the growth of Opuntia cactus. Data were acquired from an eddy covariance flux tower over a cactus crop agroecosystem (2019-2021) in the Brazilian semi-arid region. In addition, we use plant growth rates, carbon and nutrient stocks, evapotranspiration (ET) and water use efficiency (WUE), and radiation (RUE). We show that the closure of the surface energy balance was 71%, although there are minimal fluxes of available energy lost (29%) by unquantified processes. At all seasons, the highest net ecosystem CO2 exchange (NEE) rate was between 11:00-13:00 (-5.75 mu mol m- 2 s- 1). During the dry and wet-dry season, there was the lowest daily gross primary productivity (GPP) (2.5 mu mol m- 2 s- 1) and net radiation-Rn (217.97 W m-2). Ecosystem respi-ration was more expressive during the wet season (2.41 mu mol m- 2 s- 1), and maximum diurnal value of 2.65 mu mol m- 2 s- 1. Furthermore, the latent heat flux was higher during the wet season (114.68 W m-2) and lowered in the dry season (9.39 W m-2). The net assimilation rate showed higher values during the dry-wet transition. The dry season presented higher nutrient use efficiency and WUE (14.77 g m- 2 mm -1). The highest ET occurred during the wet season (227 mm), and RUE was 81.48% higher than in the dry season. Overall, the cactus was a potential C sink during the three years of assessment (NEE:-377 g C m- 2 year- 1; GPP: 881 g C m- 2 year- 1). The results help us to understand that most of the Rn energy is used in the sensible heat flux (58% ratio).
英文关键词	Eddy covariance Rainfed cactus Net ecosystemCO2 exchange Evapotranspiration CAM plant
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001081571700001
WOS关键词	ENERGY-BALANCE CLOSURE ; EDDY COVARIANCE TECHNIQUE ; NET CO2 UPTAKE ; FICUS-INDICA ; FORAGE CACTUS ; SONIC ANEMOMETER ; PLANT-POPULATION ; WATER-VAPOR ; ROOT-GROWTH ; FLUX
WOS类目	Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Engineering ; Geology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/397418
推荐引用方式 GB/T 7714	Jardim, Alexandre Manicoba da Rosa Ferraz,de Morais, Jose Edson Florentino,de Souza, Luciana Sandra Bastos,et al. Sink or carbon source? how the Opuntia cactus agroecosystem interacts in the use of carbon, nutrients and radiation in the Brazilian semi-arid region[J],2023,625.
APA	Jardim, Alexandre Manicoba da Rosa Ferraz.,de Morais, Jose Edson Florentino.,de Souza, Luciana Sandra Bastos.,Marin, Fabio Ricardo.,de Moura, Magna Soelma Beserra.,...&da Silva, Thieres George Freire.(2023).Sink or carbon source? how the Opuntia cactus agroecosystem interacts in the use of carbon, nutrients and radiation in the Brazilian semi-arid region.JOURNAL OF HYDROLOGY,625.
MLA	Jardim, Alexandre Manicoba da Rosa Ferraz,et al."Sink or carbon source? how the Opuntia cactus agroecosystem interacts in the use of carbon, nutrients and radiation in the Brazilian semi-arid region".JOURNAL OF HYDROLOGY 625(2023).