干旱区生态环境知识资源中心(Arid): Can changes in land use in a semi-arid region of Brazil cause seasonal variation in energy partitioning and evapotranspiration?

Arid

DOI	10.1016/j.jenvman.2024.121959
	Can changes in land use in a semi-arid region of Brazil cause seasonal variation in energy partitioning and evapotranspiration?
	dos Santos, Wilma Roberta; Jardim, Alexandre Manitoba da Rosa Ferraz; de Souza, Luciana Sandra Bastos; de Souza, Carlos Andre Alves; de Morais, Jose Edson Florentino; Alves, Cleber Pereira; Araujo Jr, George do Nascimento; da Silva, Marcelo Jose; Salvador, Kaique Renan da Silva; da Silva, Marcos Vinicius; Morellato, Leonor Patricia Cerdeira; da Silva, Thieres George Freire
通讯作者	dos Santos, WR
来源期刊	JOURNAL OF ENVIRONMENTAL MANAGEMENT
ISSN	0301-4797
EISSN	1095-8630
出版年	2024
卷号	367
英文摘要	Changes to forests due to deforestation, or their replacement by agricultural areas, alter evapotranspiration and the partitioning of available energy. This study investigated seasonal variations in the energy balance and evapotranspiration in landscapes under different levels of anthropogenic intervention in the semi-arid region of Brazil. Micrometeorological data was obtained from September 2020 to October 2022 for three areas of the semiarid region: preserved Caatinga (CAA, native vegetation), Caatinga under regeneration (REGE) and a deforested area (DEFA). Here, we use the Bowen ratio energy balance method. Measurements were taken of global solar radiation, air temperature, relative humidity, vapour pressure deficit, rainfall, net radiation, latent heat flux, sensible heat flux, soil heat flux, evapotranspiration, volumetric soil water content and Normalised Difference Vegetation Index. Sensible heat flux was the dominant flux in both areas with 66% for preserved Caatinga vegetation, 63% for Caatinga under regeneration and 62% deforested area. The latent heat flux was equivalent to 28% of the net radiation for preserved Caatinga vegetation, Caatinga under regeneration and deforested area. The evapotranspiration in turn responded as a function of water availability, being higher during the rainy seasons, with average values of 1.82 mm day(-1) for preserved Caatinga vegetation, 2.26 mm day(-1) for Caatinga under regeneration and 1.25 mm day(-1 ) for deforested area. The Bowen ratio presented values > 1 in deforested area, preserved Caatinga vegetation and Caatinga under regeneration. Thus, it can be concluded that the change in land use alters the energy balance components, promoting reductions in available energy and latent and sensible heat fluxes during the rainy-dry transition in the deforested area. In addition, the seasonality of energy fluxes depends on water availability in the environment.
英文关键词	Surface energy budget Dry forest Turbulent heat fluxes Land use
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001284942200001
WOS关键词	CARBON-DIOXIDE ; DRY FOREST ; HEAT-FLUX ; CLIMATE ; BALANCE ; SURFACE ; RATIO ; WATER ; RAIN ; DEFORESTATION
WOS类目	Environmental Sciences
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/2XILL650/404494
推荐引用方式 GB/T 7714	dos Santos, Wilma Roberta,Jardim, Alexandre Manitoba da Rosa Ferraz,de Souza, Luciana Sandra Bastos,et al. Can changes in land use in a semi-arid region of Brazil cause seasonal variation in energy partitioning and evapotranspiration?[J],2024,367.
APA	dos Santos, Wilma Roberta.,Jardim, Alexandre Manitoba da Rosa Ferraz.,de Souza, Luciana Sandra Bastos.,de Souza, Carlos Andre Alves.,de Morais, Jose Edson Florentino.,...&da Silva, Thieres George Freire.(2024).Can changes in land use in a semi-arid region of Brazil cause seasonal variation in energy partitioning and evapotranspiration?.JOURNAL OF ENVIRONMENTAL MANAGEMENT,367.
MLA	dos Santos, Wilma Roberta,et al."Can changes in land use in a semi-arid region of Brazil cause seasonal variation in energy partitioning and evapotranspiration?".JOURNAL OF ENVIRONMENTAL MANAGEMENT 367(2024).