干旱区生态环境知识资源中心(Arid): Lithic soils in the semi-arid region of Brazil: edaphic characterization and susceptibility to erosion

Arid

DOI	10.1007/s40333-022-0002-3
	Lithic soils in the semi-arid region of Brazil: edaphic characterization and susceptibility to erosion
	Pinheiro Junior, Carlos R.; Salvador, Conan A.; Tavares, Tiago R.; Abreu, Marcel C.; Fagundes, Hugo S.; Almeida, Wilk S.; Silva Neto, Eduardo C.; Anjos, Lucia H. C.; Pereira, Marcos G.
通讯作者	Pereira, MG (corresponding author)，Fed Rural Univ Rio de Janeiro UFRRJ, Dept Soils, BR-23890 Seropedica, RJ, Brazil.
来源期刊	JOURNAL OF ARID LAND
ISSN	1674-6767
EISSN	2194-7783
出版年	2022
卷号	14 期号:1 页码:56-69
英文摘要	Soils (Leptosols or Epileptic Regosols) with lithic contact at a depth of 50 cm occupy almost 20% of the Brazilian semi-arid region. These lithic soils are susceptible to erosion due to faster saturation of water-holding capacity during rainfall, which accelerates the beginning of runoff. However, erosion traits of lithic soils in the semi-arid region of Brazil are less studied. The aim of this study was to characterize the soil and landscape attributes in areas with Neossolos Litolicos (Entisols) in the Caatinga biome to identify region of high susceptibility to erosion. Results showed that the soils were characterized by a sandy texture, soil structure with poor development and low content of organic carbon. These attributes increase susceptibility to erosion and reduce water storage capacity, especially in the states of Ceara and Sergipe. In these states, the content of rock fragments in the soil reaches 790 g/kg. High contents of silt and fine sand, high silt/clay ratio, predominance of Leptosols and strong rainfall erosivity were observed in Piaui and northwestern Ceara. A very high degree of water erosion was observed in the states of Pernambuco and Paraiba. Despite the low degree of erosion observed in the state of Bahia, it is highly susceptible to erosion due to the predominance of very shallow soils, rugged relief and high values of rainfall erosivity. Lower vulnerability was observed in the state of Alagoas because of its more smoothed relief, greater effective soil depth, thicker A horizon of soil and lower rainfall erosivity. In general, the characteristics that intensify the susceptibility to erosion in the Caatinga biome are those soil structures with poor development or without aggregation, low contents of organic carbon, high contents of silt and fine sand, high values of silt/clay ratio and rugged relief in some regions. This study collected information contributing to a better characterization of soils with lithic contact in the semi-arid region of Brazil. In addition, regions with a higher susceptibility to erosion were identified, revealing insights that could help develop strategies for environmental risk mitigation.
英文关键词	Caatinga biome drylands erosive processes leptosols soil degradation
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000749929400002
WOS关键词	LAND-USE CHANGE ; MULTIVARIATE-ANALYSIS ; SPATIAL VARIABILITY ; RAINFALL EROSIVITY ; ERODIBILITY ; TOPOGRAPHY ; RUNOFF ; VEGETATION
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/2XILL650/376465
作者单位	[Pinheiro Junior, Carlos R.; Salvador, Conan A.; Abreu, Marcel C.; Fagundes, Hugo S.; Silva Neto, Eduardo C.; Anjos, Lucia H. C.; Pereira, Marcos G.] Fed Rural Univ Rio de Janeiro UFRRJ, Dept Soils, BR-23890 Seropedica, RJ, Brazil; [Tavares, Tiago R.] Univ Sao Paulo, Ctr Nucl Energy Agr CENA, BR-13416 Piracicaba, SP, Brazil; [Almeida, Wilk S.] Fed Inst Educ Sci & Technol Rondonia IFRO, BR-78930 Ariquemes, Rondonia, Brazil
推荐引用方式 GB/T 7714	Pinheiro Junior, Carlos R.,Salvador, Conan A.,Tavares, Tiago R.,et al. Lithic soils in the semi-arid region of Brazil: edaphic characterization and susceptibility to erosion[J],2022,14(1):56-69.
APA	Pinheiro Junior, Carlos R..,Salvador, Conan A..,Tavares, Tiago R..,Abreu, Marcel C..,Fagundes, Hugo S..,...&Pereira, Marcos G..(2022).Lithic soils in the semi-arid region of Brazil: edaphic characterization and susceptibility to erosion.JOURNAL OF ARID LAND,14(1),56-69.
MLA	Pinheiro Junior, Carlos R.,et al."Lithic soils in the semi-arid region of Brazil: edaphic characterization and susceptibility to erosion".JOURNAL OF ARID LAND 14.1(2022):56-69.