scholarly journals The importance of non-carbonate mineral weathering as a soil formation mechanism within a karst weathering profile in the SPECTRA Critical Zone Observatory, Guizhou Province, China

2017 ◽  
Vol 36 (3) ◽  
pp. 566-571 ◽  
Author(s):  
Oliver W. Moore ◽  
Heather L. Buss ◽  
Sophie M. Green ◽  
Man Liu ◽  
Zhaoliang Song
Keyword(s):  
Formation Mechanism ◽  
Soil Formation ◽  
Critical Zone ◽  
Mineral Weathering ◽  
Guizhou Province ◽  
Carbonate Mineral ◽  
Weathering Profile ◽  
Critical Zone Observatory

Mineral weathering and elemental transport during hillslope evolution at the Susquehanna/Shale Hills Critical Zone Observatory

2010 ◽  
Vol 74 (13) ◽  
pp. 3669-3691 ◽  
Author(s):  
Lixin Jin ◽  
Ramesh Ravella ◽  
Blake Ketchum ◽  
Paul R. Bierman ◽  
Peter Heaney ◽  
...  
Keyword(s):  
Critical Zone ◽  
Mineral Weathering ◽  
Hillslope Evolution ◽  
Critical Zone Observatory ◽  
Shale Hills

ASPECT-DEPENDENT FEEDBACKS BETWEEN REGOLITH PRODUCTION AND TRANSPORT AT THE SHALE HILLS CRITICAL ZONE OBSERVATORY

2017 ◽  
Author(s):  
Nicole West ◽  
◽  
Eric Kirby ◽  
Andrew A. Nyblade ◽  
Susan L. Brantley
Keyword(s):  
Critical Zone ◽  
Critical Zone Observatory ◽  
Shale Hills

scholarly journals A critical zone observatory dedicated to suspended sediment transport: The meso‐scale Galabre catchment (southern French Alps)

2021 ◽  
Vol 35 (3) ◽  
Author(s):  
Cédric Legout ◽  
Guilhem Freche ◽  
Romain Biron ◽  
Michel Esteves ◽  
Oldrich Navratil ◽  
...  
Keyword(s):  
Sediment Transport ◽  
Suspended Sediment ◽  
Critical Zone ◽  
Suspended Sediment Transport ◽  
French Alps ◽  
Critical Zone Observatory ◽  
Meso Scale

scholarly journals Biogeochemical Controls on the Potential for Long-Term Contaminant Leaching from Soils Developing on Historic Coal Mine Spoil

Soil Systems ◽  
2020 ◽  
Vol 5 (1) ◽  
pp. 3
Author(s):  
David Singer ◽  
Elizabeth Herndon ◽  
Laura Zemanek ◽  
Kortney Cole ◽  
Tyler Sanda ◽  
...  
Keyword(s):  
Coal Mine ◽  
Solid Phase ◽  
Microbial Community Composition ◽  
Toxic Metal ◽  
Soil Formation ◽  
Mineral Weathering ◽  
Mine Spoil ◽  
Secondary Phases ◽  
Undisturbed Soil

Coal mine spoil is widespread in US coal mining regions, and the potential long-term leaching of toxic metal(loid)s is a significant and underappreciated issue. This study aimed to determine the flux of contaminants from historic mine coal spoil at a field site located in Appalachian Ohio (USA) and link pore water composition and solid-phase composition to the weathering reaction stages within the soils. The overall mineralogical and microbial community composition indicates that despite very different soil formation pathways, soils developing on historic coal mine spoil and an undisturbed soil are currently dominated by similar mineral weathering reactions. Both soils contained pyrite coated with clays and secondary oxide minerals. However, mine spoil soil contained abundant residual coal, with abundant Fe- and Mn- (oxy)hydroxides. These secondary phases likely control and mitigate trace metal (Cu, Ni, and Zn) transport from the soils. While Mn was highly mobile in Mn-enriched soils, Fe and Al mobility may be more controlled by dissolved organic carbon dynamics than mineral abundance. There is also likely an underappreciated risk of Mn transport from coal mine spoil, and that mine spoil soils could become a major source of metals if local biogeochemical conditions change.

Landscape response to tipping points in granite weathering: The case of stepped topography in the Southern Sierra Critical Zone Observatory

2011 ◽  
Vol 26 ◽  
pp. S48-S50 ◽  
Author(s):  
Barbara S. Jessup ◽  
W. Jesse Hahm ◽  
Scott N. Miller ◽  
James W. Kirchner ◽  
Clifford S. Riebe
Keyword(s):  
Critical Zone ◽  
Tipping Points ◽  
Critical Zone Observatory ◽  
Landscape Response ◽  
Granite Weathering

scholarly journals Walker and Syers enter the critical zone: Integrating decadal scale root development with longer term soil development to understand terrestrial nutrient cycling

2021 ◽  
Author(s):  
Emma Hauser ◽  
Jon Chorover ◽  
Charles Cook ◽  
Daniel Markewitz ◽  
Craig Rasmussen ◽  
...  
Keyword(s):  
Soil Development ◽  
Critical Zone ◽  
Mineral Weathering ◽  
Forest Growth ◽  
Vegetation Development ◽  
Nutrient Sources ◽  
Development Models ◽  
Rooting Zone ◽  
Plant Soil ◽  
Decadal Scale

Most terrestrial nutrient sources are hypothesized to shift in dominance from mineral- to organic matter (OM)-derived over millennia. We investigated how overlaying this hypothesis with plant rooting dynamics that can feedback to soil development offers insight into ecosystem functioning. To test the hypothesis that the nutritional importance of OM as mineral weathering proceeds is mediated by rooting system nutrient economies that vary with vegetation development, we paired litterfall decay experiments with soil mineralogical data from diverse forests across the Critical Zone (CZ) Observatory Network. We demonstrate that sources of phosphorus shift from OM-bound stocks to minerals as the rooting zone expands during the transition from mid to late stages of forest growth. Root-driven, plant-soil feedbacks thus can prompt inconsistencies with soil development models that posit a unidirectional transition from mineral to organic nutrient dominance, and illuminate how forest growth and land use influence nutrient bioavailability in Earth’s CZ.

The C-biogeochemistry of a Midwestern USA agricultural impoundment in context: Lake Decatur in the intensively managed landscape critical zone observatory

2018 ◽  
Vol 138 (2) ◽  
pp. 171-195 ◽  
Author(s):  
Neal E. Blair ◽  
Elana L. Leithold ◽  
A. N. Thanos Papanicolaou ◽  
Christopher G. Wilson ◽  
Laura Keefer ◽  
...  
Keyword(s):  
Critical Zone ◽  
Midwestern Usa ◽  
Critical Zone Observatory ◽  
Intensively Managed
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