State and trends of hillslope erosion across New South Wales, Australia

Yang, X

State and trends of hillslope erosion across New South Wales, Australia

Yang, X

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Publisher:: ELSEVIER
Publication Type:: Journal Article
Citation:: Catena, 2020, 186
Issue Date:: 2020-03-01

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Field	Value	Language
dc.contributor.author	Yang, X https://orcid.org/0000-0002-5990-2186
dc.date.accessioned	2020-10-28T04:06:08Z
dc.date.available	2020-10-28T04:06:08Z
dc.date.issued	2020-03-01
dc.identifier.citation	Catena, 2020, 186
dc.identifier.issn	0341-8162
dc.identifier.issn	1872-6887
dc.identifier.uri	http://hdl.handle.net/10453/143550
dc.description.abstract	© 2019 Elsevier B.V. Hillslope erosion is a widespread natural hazard which often causes land and water quality degradation. Consistent and continuous erosion monitoring will help identify the impact of land management practices and improve soil condition. This paper presents an improved modeling approach for monitoring and predicting hillslope erosion on monthly basis over New South Wales (NSW), Australia by using the most recent time-series fractional vegetation cover data, regional climate projections and the Revised Universal Soil Loss Equation. The time-series estimation was used to analyze the state and trends of hillslope erosion, identifying the places and times of greatest erosion hazard. The average hillslope erosion rate for the current period (2000–2017) was estimated at 0.85 Mg ha−1 yr−1 over NSW. The areas with high erosion risk was the North Coast, Hunter and Greater Sydney regions with erosion rates of 4.04, 3.74 and 3.06 Mg ha−1 yr−1 respectively. The Western region had the lowest hillslope erosion risk (0.11 Mg ha−1 yr−1) due to its flat terrain. Hillslope erosion in NSW was generally decreasing over the past 18 years, with a reduction of 16% in the recent three years (2015–2017) compared to the previous 15-year (2000–14). However, the future hillslope erosion is predicted to increase about 7–21% in the next 60 years due to the likely increase in extreme rainfall events and decrease in groundcover. The methodology and datasets used in this study are general, thus they have the potential to be applied elsewhere.
dc.language	English
dc.publisher	ELSEVIER
dc.relation.ispartof	Catena
dc.relation.isbasedon	10.1016/j.catena.2019.104361
dc.rights	info:eu-repo/semantics/restrictedAccess
dc.subject	0403 Geology, 0406 Physical Geography and Environmental Geoscience, 0503 Soil Sciences
dc.subject.classification	Geochemistry & Geophysics
dc.title	State and trends of hillslope erosion across New South Wales, Australia
dc.type	Journal Article
utslib.citation.volume	186
utslib.for	0403 Geology
utslib.for	0406 Physical Geography and Environmental Geoscience
utslib.for	0503 Soil Sciences
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Life Sciences
pubs.organisational-group	/University of Technology Sydney
utslib.copyright.status	closed_access	*
pubs.consider-herdc	false
dc.date.updated	2020-10-28T04:06:00Z
pubs.publication-status	Published
pubs.volume	186

Abstract:

© 2019 Elsevier B.V. Hillslope erosion is a widespread natural hazard which often causes land and water quality degradation. Consistent and continuous erosion monitoring will help identify the impact of land management practices and improve soil condition. This paper presents an improved modeling approach for monitoring and predicting hillslope erosion on monthly basis over New South Wales (NSW), Australia by using the most recent time-series fractional vegetation cover data, regional climate projections and the Revised Universal Soil Loss Equation. The time-series estimation was used to analyze the state and trends of hillslope erosion, identifying the places and times of greatest erosion hazard. The average hillslope erosion rate for the current period (2000–2017) was estimated at 0.85 Mg ha−1 yr−1 over NSW. The areas with high erosion risk was the North Coast, Hunter and Greater Sydney regions with erosion rates of 4.04, 3.74 and 3.06 Mg ha−1 yr−1 respectively. The Western region had the lowest hillslope erosion risk (0.11 Mg ha−1 yr−1) due to its flat terrain. Hillslope erosion in NSW was generally decreasing over the past 18 years, with a reduction of 16% in the recent three years (2015–2017) compared to the previous 15-year (2000–14). However, the future hillslope erosion is predicted to increase about 7–21% in the next 60 years due to the likely increase in extreme rainfall events and decrease in groundcover. The methodology and datasets used in this study are general, thus they have the potential to be applied elsewhere.

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http://hdl.handle.net/10453/143550