干旱区生态环境知识资源中心(Arid): Sodification and solodization processes: Pedogenesis or natural soil degradation?

Arid

DOI	10.1016/j.jsames.2020.102909
	Sodification and solodization processes: Pedogenesis or natural soil degradation?
	Oliveira Filho, Jose de Souza; Pinheiro Junior, Carlos Roberto; Pereira, Marcos Gervasio; Valladares, Gustavo Souza; Camara, Rodrigo
通讯作者	Pereira, MG (corresponding author), Univ Fed Rural Rio de Janeiro, Dept Soils, BR-465,Km 7, BR-23897000 Seropedica, RJ, Brazil.
来源期刊	JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
ISSN	0895-9811
EISSN	1873-0647
出版年	2020
卷号	104
英文摘要	Sodium-affected soils occur predominantly in arid and semi-arid regions. Sodification and solodization are the two main pedogenetic processes in the formation and evolution of these types of soils, in the landscape. In this study, we used soil morphological, physical, and hydraulic analyses to test the hypothesis that sodification and solodization are natural processes of soil degradation, constituting a form of regressive pedogenesis. Sodium-affected Solonetz, Vertisol, and Planosol profiles were sampled and subjected to morphological, physical, and hydraulic analyses. Under the influence of sodification, Solonetz and Planosol showed signs of regressive pedogenesis, including the formation of a surface horizon with sandy texture, weak structure, reduced available water capacity, and evident characteristics of natural erosion. The morphological, physical, and hydraulic properties of Vertisol were not influenced by sodification. Solodization (sodium leaching and topsoil acidification) had a positive effect on the structural characteristics of Planosol, increasing the degree of flocculation (55-100%); thus, solodization was not associated with natural degradation. Sodification and solodization are antagonistic processes. Whereas sodification can be regarded as a form of regressive pedogenesis leading to natural degradation of sodium-affected soils, solodization is a progressive process of profile evolution. Degradation is a natural phenomenon caused by regressive evolution factors during the formation of Solonetz and Planosol profiles. Our results may guide the development of land management strategies for sodium-affected soils in semi-arid regions according to their use capability.
英文关键词	Drylands Soil degradation Regressive pedogenesis Vertisol Solonetz Planosol
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000600272500004
WOS关键词	SALINE-SODIC SOIL ; GENESIS
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/349050
作者单位	[Oliveira Filho, Jose de Souza; Pinheiro Junior, Carlos Roberto; Pereira, Marcos Gervasio] Univ Fed Rural Rio de Janeiro, Dept Soils, BR-465,Km 7, BR-23897000 Seropedica, RJ, Brazil; [Valladares, Gustavo Souza] Univ Fed Piaui, Dept Geog, Minist Petronio Campus, BR-64049550 Teresina, Piaui, Brazil; [Camara, Rodrigo] Univ Fed Rural Rio de Janeiro, Dept Environm & Forest Sci, BR 465 Km 7, BR-23897000 Seropedica, RJ, Brazil
推荐引用方式 GB/T 7714	Oliveira Filho, Jose de Souza,Pinheiro Junior, Carlos Roberto,Pereira, Marcos Gervasio,et al. Sodification and solodization processes: Pedogenesis or natural soil degradation?[J],2020,104.
APA	Oliveira Filho, Jose de Souza,Pinheiro Junior, Carlos Roberto,Pereira, Marcos Gervasio,Valladares, Gustavo Souza,&Camara, Rodrigo.(2020).Sodification and solodization processes: Pedogenesis or natural soil degradation?.JOURNAL OF SOUTH AMERICAN EARTH SCIENCES,104.
MLA	Oliveira Filho, Jose de Souza,et al."Sodification and solodization processes: Pedogenesis or natural soil degradation?".JOURNAL OF SOUTH AMERICAN EARTH SCIENCES 104(2020).