干旱区生态环境知识资源中心(Arid): CARBONATE-AFFECTED SOILS AND DESERTIFICATION IN THE MIDDLE COURSE OF THE SALITRE RIVER BASIN, BAHIA

Arid

DOI	10.20502/rbg.v21i4.1940
	CARBONATE-AFFECTED SOILS AND DESERTIFICATION IN THE MIDDLE COURSE OF THE SALITRE RIVER BASIN, BAHIA
	Rios, Marcio Lima; Macagnan Carvalho, Vilma Lucia; Oliveira, Fabio Soares
通讯作者	Rios, ML (corresponding author), Inst Fed Educac Ciencia & Tecnol Baiano IFBaiano, Estr Igara Km 04, BR-48970000 Senhor Do Bonfim, BA, Brazil.
来源期刊	REVISTA BRASILEIRA DE GEOMORFOLOGIA
ISSN	1519-1540
EISSN	2236-5664
出版年	2020
卷号	21 期号:4 页码:911-929
英文摘要	Desertification in the Brazilian semiarid is associated with advanced land degradation levels, with the deterioration of soils and native vegetation (dry forest, locally named Caatingas). Soil exposure increases the risk of desertification. This study analyzed the relationship between carbonate-affected soils and possible desertification in the Salitre River basin's medium course, dry semiarid of Bahia state, in two relief compartments, called carbonate plateau and valley bottom depression. Remote sensing techniques were used for temporal delimitation of soil exposure, comparing the 1950 and 2019 years. The distribution of pedological coverage on a slope was analyzed to measure the soil morphological organization, which were also analyzed in the laboratory from their physical and chemical (with emphasis on the equivalent calcium carbonate) properties. The results showed a greater vegetation cover and more developed and stable soils in the carbonate plateau. In the valley bottom depression, 70% of exposed soil (growing in the last decades) occur under very unstable morphogenetic conditions, with strong removal of solum and on highly friable materials, of high alkalinity and levels of equivalent calcium carbonate that exceed 500 g kg-1. These conditions make it difficult to recover the caatingas in the depression area, revealing persistent and evolutionary soil exposure, suggesting a high risk of desertification.
英文关键词	Brazilian semiarid soil erosion calcic horizons geomorphological compartments desertification process
类型	Article
语种	葡萄牙语
开放获取类型	DOAJ Gold
收录类别	ESCI
WOS记录号	WOS:000612796100012
WOS关键词	KARST ROCKY DESERTIFICATION ; NEGEV HIGHLANDS ; LAND-USE ; AREAS ; DEGRADATION ; EROSION ; CHINA ; RISK
WOS类目	Geography, Physical
WOS研究方向	Physical Geography
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/352678
作者单位	[Rios, Marcio Lima] Inst Fed Educac Ciencia & Tecnol Baiano IFBaiano, Estr Igara Km 04, BR-48970000 Senhor Do Bonfim, BA, Brazil; [Macagnan Carvalho, Vilma Lucia; Oliveira, Fabio Soares] Univ Fed Minas Gerais, Programa Posgrad Geog, Av Antonio Carlos 6627, BR-31270901 Belo Horizonte, MG, Brazil
推荐引用方式 GB/T 7714	Rios, Marcio Lima,Macagnan Carvalho, Vilma Lucia,Oliveira, Fabio Soares. CARBONATE-AFFECTED SOILS AND DESERTIFICATION IN THE MIDDLE COURSE OF THE SALITRE RIVER BASIN, BAHIA[J],2020,21(4):911-929.
APA	Rios, Marcio Lima,Macagnan Carvalho, Vilma Lucia,&Oliveira, Fabio Soares.(2020).CARBONATE-AFFECTED SOILS AND DESERTIFICATION IN THE MIDDLE COURSE OF THE SALITRE RIVER BASIN, BAHIA.REVISTA BRASILEIRA DE GEOMORFOLOGIA,21(4),911-929.
MLA	Rios, Marcio Lima,et al."CARBONATE-AFFECTED SOILS AND DESERTIFICATION IN THE MIDDLE COURSE OF THE SALITRE RIVER BASIN, BAHIA".REVISTA BRASILEIRA DE GEOMORFOLOGIA 21.4(2020):911-929.