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Influence of bank vegetation on channel morphology in rural and urban…
Influence of bank vegetation on channel morphology in rural and urban watersheds
Location :black_flag:
Piedmont region
southeast PA
north MD
DE
each pair had
forest riparian
grass riparian
contiguous/varied urbanization
to investigate
riparian and urbanization influence
on morphology
selected based on :lock:
no tributaries
no major disturbances
no abutting
to avoid
forest debris
affecting
non-forested areas
Urbanization :beer_mugs:
causes
supply of
water
sediment
change channels
increase in :star:
peak discharges
runoff volumes
due to
paved surfaces :explode:
storm discharges
leads to
channel erosion
results in
increased channel size
results in
larger
channel width
cross sectional area
consideration of
drainage areas
to detect
differences in urbanization
combined influence of :silhouettes:
riparian vegetation and urbanization
forested :smiley:
have larger widths
compared to
non-forested sites
riparian influence
same regardless of
extent of urbanization
urbanization influences width
despite
extent of riparian vegetation
limitations :no_entry:
with
previous studies
morphological variables
inconsideration of
varied vegetation
current restoration designs :pencil2:
rely on regression curves
don't consider
local conditions
fluvial processes
nature of distubances
need
more localized regional curves
that account for
riparian condition
watershed land use
natural visibility
consideration of
site differences
vegetation type/density
soil conditions
flow regime
slopes
geologic setting
disturbance history
watershed characteristics
stream size
this study
not subjected to
EPA peer review
environmental issues
environmental
addresses reforestation
by providing
guide for restoration practices
restoration :<3:
important to
watershed initiatives
because of
urbanization