Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1002/ppp.2029 |
Pedoclimate monitoring in the periglacial high mountain soils of the Atacama Desert, northern Chile | |
Gjorup, Davi Feital1; Francelino, Marcio Rocha1; Machado Michel, Roberto Ferreira2; Senra, Eduardo Osorio1; Schaefer, Carlos Ernesto G. R.1 | |
通讯作者 | Gjorup, Davi Feital |
来源期刊 | PERMAFROST AND PERIGLACIAL PROCESSES
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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). |
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