Effects of land use-induced vegetation and topography changes on soil chemistry in the Southern Alps (Ticino, Switzerland)

Sebastian Vogel and Marco Conedera
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Sebastian Vogel: Department Engineering for Plant Production, Leibniz Institute for Agricultural Engineering and Bioeconomy (ATB), Potsdam, Germany
Marco Conedera: Insubric Ecosystems Research Group, Swiss Federal Research Institute for Forest,

Plant, Soil and Environment, 2020, vol. 66, issue 2, 73-80

Abstract: Effects of land use changes on chemical soil properties were studied in a southern alpine valley of Ticino, Switzerland by analysing three different land cover-topography units: (i) natural forested slopes (NFS); (ii) deforested, cultivated terraces (DCT), and (iii) reforested, abandoned terraces (RAT). Whereas NFS represents the natural reference state with negligible anthropogenic influence, DCT corresponds to intense agricultural utilization, and RAT refers to a post-cultural natural evolution after terrace cultivation. Land use-induced changes in vegetation cover and topography (i.e., terracing) had a clear influence on chemical soil properties. The presence or absence of the European chestnut (Castanea sativa Mill.), one of the main soil acidifying agents in the study area, clearly affected soil acidity, soil organic matter (SOM), and nutrient status. Compared to the vegetation change, terracing has a less obvious effect on soil chemistry. A greater effective rooting depth and a flat microtopography on terraces lead to a rapidly increased SOM accumulation due to better growing conditions for trees. Thus, the reforested, abandoned terraces develop peculiar soil chemistry conditions after 36 to 46 years of abandonment only.

Keywords: acidification; biodegradability; reforestation; agricultural terraces (search for similar items in EconPapers)
Date: 2020
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlpse:v:66:y:2020:i:2:id:633-2019-pse

DOI: 10.17221/633/2019-PSE

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