Global rates of soil production independent of soil depth

Harrison, Edward; Willenbring, Mark L.; Brocard, Gilles

doi:10.31223/x5b30j

Cited by 1 publication

(2 citation statements)

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“…As more and more data were collected, it emerged that some locations showed no relation between soil thickness and production rate (see compilations in Dixon & Riebe (2014) and Harrison et al. (2021)). Much of our understanding of landscape and soil evolution and landform variability is derived from constructs that assume an inverse relation between soil thickness and production rate (e.g., Ferrier & Kirchner, 2008; Roering, 2008; Sklar et al., 2017).…”

Section: Current Approaches To Constrain the Base And Thickness Of Th...mentioning

confidence: 99%

“…Despite leaning on this relation, the physical and chemical processes that might lead to a relation between soil thickness and production rate have never been fully explained. This issue has led some to question whether such a relation exists or if it arises due to invalidated assumptions (Harrison et al., 2021). Regardless of the answer, without a mechanistic, quantitative relation for how variables such as climate and rock type impact soil production over decades to millennia, an important piece of the landscape evolution puzzle is missing, and thus limits our ability to understand how the base and thickness of the CZ has evolved over hundreds of years and longer.…”

Section: Current Approaches To Constrain the Base And Thickness Of Th...mentioning

confidence: 99%

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Expanding the Spatial Reach and Human Impacts of Critical Zone Science

Singha,

Sullivan,

Billings

et al. 2024

Earth's Future

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Two major barriers hinder the holistic understanding of subsurface critical zone (CZ) evolution and its impacts: (a) an inability to measure, define, and share information and (b) a societal structure that inhibits inclusivity and creativity. In contrast to the aboveground portion of the CZ, which is visible and measurable, the bottom boundary is difficult to access and quantify. In the context of these barriers, we aim to expand the spatial reach of the CZ by highlighting existing and effective tools for research as well as the “human reach” of CZ science by expanding who performs such science and who it benefits. We do so by exploring the diversity of vocabularies and techniques used in relevant disciplines, defining terminology, and prioritizing research questions that can be addressed. Specifically, we explore geochemical, geomorphological, geophysical, and ecological measurements and modeling tools to estimate CZ base and thickness. We also outline the importance of and approaches to developing a diverse CZ workforce that looks like and harnesses the creativity of the society it serves, addressing historical legacies of exclusion. Looking forward, we suggest that to grow CZ science, we must broaden the physical spaces studied and their relationships with inhabitants, measure the “deep” CZ and make data accessible, and address the bottlenecks of scaling and data‐model integration. What is needed—and what we have tried to outline—are common and fundamental structures that can be applied anywhere and used by the diversity of researchers involved in investigating and recording CZ processes from a myriad of perspectives.

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