干旱区生态环境知识资源中心(Arid): Pedoclimate monitoring in the periglacial high mountain soils of the Atacama Desert, northern Chile

Arid

DOI	10.1002/ppp.2029
	Pedoclimate monitoring in the periglacial high mountain soils of the Atacama Desert, northern Chile
	Gjorup, Davi Feital 1; Francelino, Marcio Rocha 1; Machado Michel, Roberto Ferreira 2; Senra, Eduardo Osorio 1; Schaefer, Carlos Ernesto G. R.1
通讯作者	Gjorup, Davi Feital
来源期刊	PERMAFROST AND PERIGLACIAL PROCESSES
ISSN	1045-6740
EISSN	1099-1530
出版年	2019-11
英文摘要	Pedoclimate monitoring in the Central Andes is key to understanding climatic change in arid high-mountain low-latitude environments. We carried out a study of the thermal-hydric regimes of three soils along an altitudinal gradient in the Licancabur Volcano, northern Chile. In situ measurements of soil and air temperature and water content were collected over 19 months, via temperature and moisture probes installed from 5 to 100 cm depths, at 5,061, 4,728 and 4,426 m a.s.l. All soils show a periglacial thermal regime, but without permafrost. The contrasting behavior regarding soil water content and temperature regime along the gradient was attributed to climate, geomorphic features and varying soil attributes. Altitude-related factors (air temperature and precipitation) drive the overall thermal regime of soils, but the mid-altitude site showed the coldest soil thermal regime. Here, local landform characteristics (south aspect, mid-slope location) impose lower solar radiation, influencing the soil thermal regime. Aridity drives unusual periglacial processes, with low frost shattering, no cryoturbation and particular landscape evolution. The thermal behavior affects soil moisture, with the lowest water contents recorded in the winter period due to water freezing at colder sites. Higher clay content results in greater soil moisture, despite the lower rainfall, shallow depth of the wetting front and large variability in water content. The study period included an extreme climatic event, and as such the monitored data do not represent the typical regional seasonal variation. Pedoclimate is more important in driving soil development than altitude-related factors.
英文关键词	Atacama desert desert soils periglacial environments periglacial geomorphology volcanic soils
类型	Article ; Early Access
语种	英语
国家	Brazil
收录类别	SCI-E
WOS记录号	WOS:000495570400001
WOS关键词	LAYER THERMAL REGIME ; KING GEORGE ISLAND ; ACTIVE LAYER ; ROCK GLACIERS ; MARCH 2015 ; TEMPERATURE ; VEGETATION ; ANDES
WOS类目	Geography, Physical ; Geology
WOS研究方向	Physical Geography ; Geology
EI主题词	2019-11-11
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/310819
作者单位	1.Univ Fed Vicosa, Dept Solos, Vicosa, MG, Brazil; 2.Univ Estadual Santa Cruz, Ilheus, BA, Brazil
推荐引用方式 GB/T 7714	Gjorup, Davi Feital,Francelino, Marcio Rocha,Machado Michel, Roberto Ferreira,et al. Pedoclimate monitoring in the periglacial high mountain soils of the Atacama Desert, northern Chile[J],2019.
APA	Gjorup, Davi Feital,Francelino, Marcio Rocha,Machado Michel, Roberto Ferreira,Senra, Eduardo Osorio,&Schaefer, Carlos Ernesto G. R..(2019).Pedoclimate monitoring in the periglacial high mountain soils of the Atacama Desert, northern Chile.PERMAFROST AND PERIGLACIAL PROCESSES.
MLA	Gjorup, Davi Feital,et al."Pedoclimate monitoring in the periglacial high mountain soils of the Atacama Desert, northern Chile".PERMAFROST AND PERIGLACIAL PROCESSES (2019).