2017
Domination of hillslope denudation by tree uprooting in an old-growth forest
PHILLIPS, Jonathan D., Pavel ŠAMONIL, Łukasz PAWLIK, Jan TROCHTA, Pavel DANĚK et. al.Základní údaje
Originální název
Domination of hillslope denudation by tree uprooting in an old-growth forest
Autoři
PHILLIPS, Jonathan D. (840 Spojené státy), Pavel ŠAMONIL (203 Česká republika), Łukasz PAWLIK (616 Polsko), Jan TROCHTA (203 Česká republika) a Pavel DANĚK (203 Česká republika, garant, domácí)
Vydání
Geomorphology, AMSTERDAM, ELSEVIER SCIENCE BV, 2017, 0169-555X
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10511 Environmental sciences
Stát vydavatele
Nizozemské království
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 3.308
Kód RIV
RIV/00216224:14310/17:00096015
Organizační jednotka
Přírodovědecká fakulta
UT WoS
000388777800004
Klíčová slova anglicky
Biogeomorphology; Hillslopes; Old-growth forest; Tree uprooting; Disturbance
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 20. 1. 2020 17:27, Mgr. Marie Šípková, DiS.
Anotace
V originále
Razula forest preserve in the Carpathian Mountains of the Czech Republic is an unmanaged forest that has not been logged or otherwise anthropically disturbed for at least 83 years, preceded by only infrequent selective logging. We examined this 25 ha area to determine the dominant geomorphological processes on the hillslope. Tree uprooting displaces about 2.9 m(3) of soil and regolith per year, representing about 1.5 uprooted trees ha(-1) yr(-1), based on forest inventory records dating back to 1972, and contemporary measurements of displaced soil and pit-mound topography resulting from uprooting. Pits and mounds occupy >14% of the ground surface. Despite typical slope gradients of 0.05 mm(-1), and up to 0.41, little evidence of mass wasting (e.g., slump or flow scars or deposits, colluvial deposits) was noted in the field, except in association with pit-mound pairs. Small avalanche and ravel features are common on the upslope side of uproot pits. Surface runoff features were rare and poorly connected, but do include stemwash erosion associated with stemflow. No rills or channels were found above the valley bottom area, and only small, localized areas of erosion and forest litter debris indicating overland flow. Where these features occurred, they either disappeared a short distance downslope (indicating infiltration), or indicate flow into tree throw pits. Surface erosion is also inhibited by surface armoring of coarse rock fragments associated with uprooting, as well as by the nearly complete vegetation and litter cover. These results show that the combination of direct and indirect impacts of tree uprooting can dominate slope processes in old-growth, unmanaged forests. The greater observed expression of different hillslope processes in adjacent managed forests (where tree uprooting dynamics are blocked by management activities) suggests that human interventions can change the slope process regime in forest ecosystems.
Návaznosti
MUNI/A/1301/2016, interní kód MU |
|