Geomorphology and vegetation on hillslopes: Interactions, dependencies, and feedback loops

Marston, Richard A.

doi:10.1016/j.geomorph.2009.09.028

Cited by 173 publications

(129 citation statements)

References 92 publications

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“…In addition, vegetation plays an important role because it influences surface roughness and local capacity to store sediment and water. Importantly, the above-ground biomass of vegetation changes the surface material (sediment) hydrology extensively through evaporation and transpiration processes [39][40][41], and vegetation affects the mechanical and hydrological properties of sediment through the effects of developing root systems. Thus, vegetation contributes to the sediment and flow connectivity of upstream and downstream areas.…”

Section: Sediment and Flow Connectivity Index Scfimentioning

confidence: 99%

Monitoring Earthquake-Damaged Vegetation after the 2008 Wenchuan Earthquake in the Mountainous River Basins, Dujiangyan County

et al. 2015

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Abstract:The 2008 Wenchuan earthquake destroyed large areas of vegetation in the Baisha River and Longxi River basins, in Dujiangyan County, China. There were several debris flow events in these mountainous river basins after 2008. Currently, these damaged vegetation areas are in various stages of recovery. This recovery vegetation improves the resistance of slopes to both surficial erosion and mass wasting. We introduce a probabilistic approach to determining the relationships between damaged vegetation and slope materials' stability, and model the sediment and flow (hydrological) connectivity index to detect the hydrological changes in a given river basin, using the multi-temporal remote-sensing images to monitor the vegetation recovery processes. Our results demonstrated that the earthquake-damaged vegetation areas have coupling relationships with topographic environment and slope material properties, and can be used to assess the slope material stability. Further, our analysis results showed that the areas with horizontal distance to river OPEN ACCESSRemote Sens. 2015, 7 6809 streams <500 m are areas that actively contribute sediment to the stream channel network, and are main material sources for debris flow processes in one given mountainous basin.

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Section: Sediment and Flow Connectivity Index Scfimentioning

confidence: 99%

Monitoring Earthquake-Damaged Vegetation after the 2008 Wenchuan Earthquake in the Mountainous River Basins, Dujiangyan County

et al. 2015

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“…The relationship between hillslope erosion potential and vegetation, in particular, is complex and likely involves cross-scale interactions (i.e., when processes at one spatial or temporal scale interact with processes at finer or broader scales [27]) because of their inherent interdependency [28]. However, in general, when vegetation cover increases, hillslope erosion potential decreases, and vice versa [15,28]. Aspect affects vegetation vigor and recovery time, as south-facing slopes receive less sunshine than north-facing slopes in the southern hemisphere (opposite for the northern hemisphere).…”

Section: Introductionmentioning

confidence: 99%

Nonlinear Changes in Land Cover and Sediment Runoff in a New Zealand Catchment Dominated by Plantation Forestry and Livestock Grazing

Kamarinas

Julian

Hughes

et al. 2016

Water

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Land cover can change frequently on intensively managed landscapes, affecting water quality across different spatiotemporal scales. Multi-resolution datasets are necessary in order to assess the extent and trends of these changes, as well as potential cross-scale interactions. In this study, both spatial and temporal analyses of land disturbance (i.e., soil exposure from vegetation removal) and water quality were performed on datasets ranging from daily to yearly time scales. Time-series analyses of land disturbance were compared against the water quality variables of total suspended solids (TSS), turbidity, and visual clarity for the Hoteo River catchment on the North Island of New Zealand for the 2000-2013 period. During forest harvest and recovery phases, exotic forests were the dominant disturbance, up to five times the area of grassland disturbance; while after recovery, grasslands assumed the dominant role, for up to 16 times the area of forest disturbance. Time-series of TSS from field sampling (2000)(2001)(2002)(2003)(2004)(2005)(2006)(2007)(2008)(2009)(2010)(2011)(2012)(2013) and TSS-event analyses (2012-2014) displayed distinct nonlinear patterns, suggesting that after major events, sediment that is stored in the landscape is exhausted and a period of sediment build-up follows until the next major event. Time-series analyses also showed a connection between trends in connected land disturbance and visual water clarity, with connected disturbance having the potential to be a water quality indicator. Future research should be conducted at even finer spatiotemporal scales over longer periods in order to identify effects of localized land disturbances on downstream water quality.

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“…Terrestrial vegetation alters sediment availability by reducing soil erosion via rainfall interception (Quinton et al, 1997), increased soil infiltration, decreased bulk density, and increased soil shear strength and cohesion (Gyssels et al, 2005). These changes in turn, stabilise slopes (outlined by Marston, 2010) and river banks (Thorne, 1990), thereby influencing catchment-scale sediment yield, particularly in small catchments (Marston, 2010).…”

Section: Introductionmentioning

confidence: 99%

“…This examination of the coevolution of landforms and biological communities will assist in the continued development and refinement of landscape evolution models, which hitherto have lacked the incorporation of bio-physical processes and linkages (Marston, 2010;Reinhardt et al, 2010), and help to increase our understanding of the role of vegetation development in defining the processes and timescales of paraglacial development.…”

Section: Introductionmentioning

confidence: 99%

Vegetation succession in deglaciated landscapes: implications for sediment and landscape stability

Klaar

Kidd

Malone

et al. 2014

Earth Surf Processes Landf

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Landscapes exposed by glacial retreat provide an ideal natural laboratory to study the processes involved in transforming a highly disturbed, glacially influenced landscape to a stable, diverse ecosystem which supports numerous species and communities. Large-scale vegetation development and changes in sediment availability, used as a proxy for paraglacial adjustment following rapid deglaciation, were assessed using information from remote sensing. Delineation of broad successional vegetation cover types was undertaken using Landsat satellite imagery (covering a 22 year period) to document the rate and trajectory of terrestrial vegetation development. Use of a space-for-time substitution in Glacier Bay National Park, Alaska, allowed 'back-calculation' of the age and stage of development of six catchments over 206 years. The high accuracy (89.2%) of the remotely sensed information used in monitoring successional change allowed detection of a high rate of change in vegetation classes in early successional stages (bare sediment and alder). In contrast, later successional stages (spruce and spruce-hemlock dominated forest) had high vegetation class retention, and low turnover. Modelled rates of vegetation change generally confirmed the estimated rates of successional turnover previously reported. These data, when combined with the known influence of terrestrial succession on soil development and sediment availability, suggest how physical and biological processes interact over time to influence paraglacial adjustment following deglaciation. This study highlights the application of remote sensing of successional chronosequence landscapes to assess the temporal dynamics of paraglacial adjustment following rapid deglaciation and shows the importance of incorporating bio-physical interactions within landscape evolution models.

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Geomorphology and vegetation on hillslopes: Interactions, dependencies, and feedback loops

Cited by 173 publications

References 92 publications

Monitoring Earthquake-Damaged Vegetation after the 2008 Wenchuan Earthquake in the Mountainous River Basins, Dujiangyan County

Monitoring Earthquake-Damaged Vegetation after the 2008 Wenchuan Earthquake in the Mountainous River Basins, Dujiangyan County

Nonlinear Changes in Land Cover and Sediment Runoff in a New Zealand Catchment Dominated by Plantation Forestry and Livestock Grazing

Vegetation succession in deglaciated landscapes: implications for sediment and landscape stability

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