Holocene Critical Zone dynamics in an Alpine catchment inferred from a speleothem multiproxy record. Disentangling climate and human influences
| Autor: | Regattieri E.[1, Zanchetta G.[1, Isola I.[3], Zanella E.[4], Drysdale R.N.[5, Hellstrom J.C.[7], Zerboni A.[8], Dallai L.[2], Tema E.[4], Lanci L.[9], Costa E.[4], Magri F[10] |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
southwestern Alps
Solid Earth sciences 010504 meteorology & atmospheric sciences lcsh:Medicine Speleothem 010502 geochemistry & geophysics deglaciation 01 natural sciences Article vegetation valley Deglaciation Precipitation stalagmite lcsh:Science Holocene 0105 earth and related environmental sciences geography Multidisciplinary geography.geographical_feature_category evidence variability lcsh:R yr Global change Italian Alps 15. Life on land Radiative forcing north Environmental sciences Pedogenesis 13. Climate action Interglacial Environmental science lcsh:Q history Physical geography Climate sciences |
| Zdroj: | Scientific reports (Nature Publishing Group) 9 (2019). doi:10.1038/s41598-019-53583-7 info:cnr-pdr/source/autori:Regattieri E.[1,2], Zanchetta G.[1,3], Isola I.[3], Zanella E.[4], Drysdale R.N.[5,6], Hellstrom J.C.[7], Zerboni A.[8], Dallai L.[2], Tema E.[4], Lanci L.[9], Costa E.[4], Magri F[10]/titolo:Holocene Critical Zone dynamics in an Alpine catchment inferred from a speleothem multiproxy record: disentangling climate and human influences/doi:10.1038%2Fs41598-019-53583-7/rivista:Scientific reports (Nature Publishing Group)/anno:2019/pagina_da:/pagina_a:/intervallo_pagine:/volume:9 Scientific Reports, Vol 9, Iss 1, Pp 1-9 (2019) Scientific Reports |
| DOI: | 10.1038/s41598-019-53583-7 |
| Popis: | Disentangling the effects of climate and human impact on the long-term evolution of the Earth Critical Zone is crucial to understand the array of its potential responses to the ongoing Global Change. This task requires natural archives from which local information about soil and vegetation can be linked directly to climate parameters. Here we present a high-resolution, well-dated, speleothem multiproxy record from the SW Italian Alps, spanning the last ~10,000 years of the present interglacial (Holocene). We correlate magnetic properties and the carbon stable isotope ratio to soil stability and pedogenesis, whereas the oxygen isotope composition is interpreted as primarily related to precipitation amount, modulated at different timescales by changes in precipitation source and seasonality. During the 9.7-2.8 ka period, when anthropic pressure over the catchment was scarce, intervals of enhanced soil erosion are related to climate-driven vegetation contractions and occurred during drier periods. Immediately following the onset of the Iron Age (ca. 2.8 ka), by contrast, periods of enhanced soil erosion coincided with a wetter climate. We propose that the observed changes in the soil response to climate forcing were related to early anthropogenic manipulations of Earth’s surface, which made the ECZ more sensitive to climate oscillations. |
| Databáze: | OpenAIRE |
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