Basalt weathering and pedogenesis across an environmental gradient in the southern Cascade Range, California, USA

Rasmussen, Craig; Dahlgren, Randy A.; Southard, R. J.

doi:10.1016/j.geoderma.2009.05.019

Cited by 127 publications

(86 citation statements)

References 68 publications

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“…This finding parallels similar ones in other parts of the world where mountain andic soils (not necessarily Andosols) have been reported in Bhutan (Baumler et al, 2005), in Brazil (Dümig et al, 2008), in California (Graham and O'Geen, 2010;Rasmussen et al, 2010), the Pacific Northwest, USA (McDaniel and Hipple, 2010), NW Spain (Estevez et al, 2016), and also in Italy (Iamarino and Terribile, 2008;Scarciglia et al, 2008;Vingiani et al, 2014).…”

Section: Soil and Landscapesupporting

confidence: 89%

“…NDVI (Rouse at al., 1973) is strongly related to photosynthetic activity and has been widely used to estimate landscape patterns of primary production (Wang at al., 2004;Fensholt et al, 2012) and even net primary production (Tucker and Sellers, 1986). Moreover, time series of NDVI and the related NDVI metrics have proved to be a powerful tool for addressing plant dynamics and yield prediction in both agriculture and natural ecosystems at different scales (Reed et al, 1994;Zhang et al, 2003;Bolton and Friedl, 2013).…”

Section: Aim and Rationalementioning

confidence: 99%

“…In order to extract the NDVI metrics (maximum NDVI, integrated NDVI sum over the growing period, acceleration of photosynthesis or rate of green-up, NDVI derivatives) some pre-processing of the data were necessary (i.e. cloud contamination) following established procedures (Reed et al, 1994). After such processing, about 15 % of the NDVI observations had to be discarded and the corresponding data set was excluded from this work.…”

Section: Ndvi and Land Use Datamentioning

confidence: 99%

“…in Bhutan: Baumler et al, 2005; in Brazil: Dümig et al, 2008;in California: Graham and O'Geen, 2010;Rasmussen et al, 2010; in the Pacific Northwest, USA: McDaniel and Hipple, 2010;in Spain: Estevez et al, 2016; and also in Italy: Iamarino and Terribile, 2008;Scarciglia et al, 2008;Vingiani et al, 2014;Raab et al, 2017;Mileti et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

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The hidden ecological resource of andic soils in mountain ecosystems: evidence from Italy

et al. 2018

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Abstract. Andic soils have unique morphological, physical, and chemical properties that induce both considerable soil fertility and great vulnerability to land degradation. Moreover, they are the most striking mineral soils in terms of large organic C storage and long C residence time. This is especially related to the presence of poorly crystalline clay minerals and metal-humus complexes. Recognition of andic soils is then very important.Here we attempt to show, through a combined analysis of 35 sampling points chosen in accordance to specific physical and vegetation rules, that some andic soils have an utmost ecological importance.More specifically, in Italian non-volcanic mountain ecosystems ( > 600 m a.s.l.) combining low slope (< 21 %) and highly active green biomass (high NDVI values) and in agreement to recent findings, we found the widespread occurrence of andic soils having distinctive physical and hydrological properties including low bulk density and remarkably high water retention. Most importantly, we report a demonstration of the ability of these soils to affect ecosystem functions by analysing their influence on the timescale acceleration of photosynthesis estimated by NDVI measurements.Our results are hoped to be a starting point for better understanding of the ecological importance of andic soils and also possibly to better consider pedological information in C balance calculations.

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Section: Soil and Landscapesupporting

confidence: 89%

Section: Aim and Rationalementioning

confidence: 99%

Section: Ndvi and Land Use Datamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The hidden ecological resource of andic soils in mountain ecosystems: evidence from Italy

et al. 2018

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“…Therefore, from the crest to the watercourse of a hillslope, the conditions of soil formation are differentiated. Specific local conditions such as temperature, altitude, and water availability may restrict the development of profile (RASMUSSEN; DAHLGREN; SOUTHARD, 2010).…”

Section: Introductionmentioning

confidence: 99%

Toposequences of soils developed on basaltic rocks: physicochemical attributes

Gonçalves¹,

Filho²,

Vendrame³

et al. 2013

RCA

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Soils are formed in a structural continuity of layers along a toposequence. The objective of this study was to characterize the chemical and physical properties of soils in two topossequences derived from basaltic rocks in the state of Parana, with different slopes, aiming to identify the relationships between their attributes, relief, and parent material. We studied two toposequences, with differentiated reliefs, developed on parent material consisting of vesicular and aphanitic basaltic rocks. The following physical properties were evaluated: texture, bulk density, particle density, macroporosity, microporosity, aggregate stability in water, degree of dispersion, and degree of flocculation. Chemical analyses were carried out for determination of Ca, Mg, K, P, Al, H+Al, C, and ΔpH. The results were submitted to principal component analysis (PCA) to obtain the correlation circles. In the circle of eigenvectors, in the slope with soft undulating relief, most vectors are located in the negative sector, both for physical and chemical properties with the latter being closer together. Also, the relationships between Ca, Mg, K and aluminum are evident. This way, chemical and physical properties are listed in the two slopes, and the level of correlation depends on the existing interactions. In addition, young soils with different characteristics and behavior were different from the others. Effective depth and structure were limiting attributes, but other favorable attributes were observed. The relationships among the attributes are differentiated along the slopes, and are influenced by the physicochemical nature of the geological substrate. RESUMO: Os solos são formados em uma continuidade estrutural das camadas ao longo da topossequência. Assim, o objetivo deste trabalho foi caracterizar atributos químicos e físicos de solos em duas topossequências, originados de rochas basálticas, no Estado do

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Kinetically limited weathering at low denudation rates in semiarid climatic conditions

et al. 2016

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Biogeochemical cycling within the Critical Zone depends on the interactions between minerals and fluids controlling chemical weathering and physical erosion rates. In this study, we explore the role of water availability in controlling soil chemical weathering in semiarid climatic conditions. Weathering rates and intensities were evaluated for nine soil profiles located on convex ridge crests of three mountain ranges in the Spanish Betic Cordillera. We combine a geochemical mass balance with 10 Be cosmogenic nuclides to constrain chemical weathering intensities and long-term denudation rates. As such, this study presents new data on chemical weathering and 10 Be-derived denudation for understudied semiarid climate systems. In the Betic Cordillera, chemical weathering intensities are relatively low (~5 to 30% of the total denudation of the soil) and negatively correlated with the magnitude of the water deficit in soils. Chemical mass losses are inversely related to denudation rates (14-109 mm/kyr) and positively to soil thickness (14-58 cm); these results are consistent with kinetic limitation of chemical weathering rates. A worldwide compilation of chemical weathering data suggests that soil water balance may regulate the coupling between chemical weathering and physical erosion by modulating soil solute fluxes. Therefore, future landscape evolution models that seek to link chemical weathering and physical erosion should include soil water flux as an essential driver of weathering. 2005;Brantley et al., 2007;Larsen et al., 2014]. However, in areas of sufficiently high physical erosion rates, reaction kinetics may limit weathering processes due to reduced mineral residence time as suggested by modeling and observational studies [e.g.

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Basalt weathering and pedogenesis across an environmental gradient in the southern Cascade Range, California, USA

Cited by 127 publications

References 68 publications

The hidden ecological resource of andic soils in mountain ecosystems: evidence from Italy

The hidden ecological resource of andic soils in mountain ecosystems: evidence from Italy

Toposequences of soils developed on basaltic rocks: physicochemical attributes

Kinetically limited weathering at low denudation rates in semiarid climatic conditions

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