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The frontier beneath our feet
Grant, Gordon E. ; Dietrich, William E.
Water resources research, 2017-04, Vol.53 (4), p.2605-2609
[Periódico revisado por pares]
Washington: John Wiley & Sons, Inc
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Título:
The frontier beneath our feet
Autor:
Grant, Gordon E.
;
Dietrich, William E.
Assuntos:
Aquatic ecosystems
;
Bedrock
;
Canopies
;
Canopy
;
Carbon cycle
;
Climatology
;
critical zone
;
Drought
;
Earth
;
Earth sciences
;
Ecology
;
Ecosystems
;
environmental problems
;
field studies
;
Floods
;
Food
;
Forest management
;
Forests
;
Geophysics
;
Groundwater
;
Hurricanes
;
Instruments
;
Landscape
;
landscape development
;
Measurement
;
Measurement techniques
;
Observatories
;
Organic matter
;
Organic soils
;
Resilience
;
Rocks
;
Science
;
Skin
;
Social problems
;
Soil
;
Soil organic matter
;
Soils
;
Stream flow
;
Vegetation
;
Water
;
Wildfires
É parte de:
Water resources research, 2017-04, Vol.53 (4), p.2605-2609
Descrição:
Following the simple question as to where water goes when it rains leads to one of the most exciting frontiers in earth science: the critical zone—Earth's dynamic skin. The critical zone extends from the top of the vegetation canopy through the soil and down to fresh bedrock and the bottom of the groundwater. Only recently recognized as a distinct zone, it is challenging to study because it is hard to observe directly, and varies widely across biogeoclimatic regions. Yet new ideas, instruments, and observations are revealing surprising and sometimes paradoxical insights, underscoring the value of field campaigns and long‐term observatories. These insights bear directly on some of the most pressing societal problems today: maintaining healthy forests, sustaining streamflow during droughts, and restoring productive terrestrial and aquatic ecosystems. The critical zone is critical because it supports all terrestrial life; it is the nexus where water and carbon is cycled, vegetation (hence food) grows, soil develops, landscapes evolve, and we live. No other frontier is so close to home. Plain Language Summary One of the newest and most exciting frontiers in earth sciences is the critical zone: the thin, dynamic skin of the terrestrial Earth that extends from the top of the vegetation canopy through the soil and down to fresh bedrock and the bottom of groundwater. The critical zone is where water moves, vegetation grows, roots spread, organic matter decomposes, soil develops, and rock weathers. It's also where we, and most life, lives, and is therefore “critical” to our survival. Studying the critical zone has rapidly become an international and interdisciplinary science effort utilizing field studies, long term observatories, and new geophysical measurement techniques. These studies are revealing insights into a broad range of previously unexplored topics: where do trees get their water, how does rock weather, and where does water go when it rains. Understanding the critical zone is vital to addressing key environmental and social problems: maintaining soil productivity in intensively managed landscapes, ensuring that forests don't die during droughts, and improving landscape resilience to wildfires, floods, and hurricanes. Today, the term “critical zone” provides an essential organizing principle for the earth and biological sciences just as “ecosystem” did for ecology half a century ago. Key Points The critical zone is a new and exciting frontier in earth and biological sciences Critical zone science is transforming our understanding of linkages among vegetation, soils, bedrock, and the movement of water Critical zone science contributes to understanding key social problems: forest health, soil productivity, and effects of natural disasters
Editor:
Washington: John Wiley & Sons, Inc
Idioma:
Inglês
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