DOI: 10.1016/j.jag.2015.05.002
Scopus记录号: 2-s2.0-84942520429
论文题名: Use of WorldView-2 time series to establish a wetland monitoring program for potential offsite impacts of mine site rehabilitation
作者: Whiteside T ; G ; , Bartolo R ; E
刊名: International Journal of Applied Earth Observation and Geoinformation
ISSN: 15698432
出版年: 2015
卷: 42 起始页码: 24
结束页码: 37
语种: 英语
英文关键词: Monitoring
; Time-series analysis
; Vegetation change
; Wetlands
; WorldView-2
Scopus关键词: environmental monitoring
; floodplain
; time series analysis
; vegetation dynamics
; wetland
; WorldView
; Australia
; Kakadu National Park
; Magela Creek
; Northern Territory
; Poaceae
英文摘要: The Ramsar-listed wetlands of the Magela Creek floodplain, situated in the World Heritage Kakadu National Park, in northern Australia are recognised for their biodiversity and cultural values. The floodplain is also a downstream receiving environment for Ranger uranium mine, which is entering closure and rehabilitation phases. Vegetation on the floodplain is spatially and temporally variable which is related to the hydrology of the region, primarily the extent and level of inundation and available soil moisture. Time-series mapping of the floodplain vegetation will provide a contemporary baseline of annual vegetation dynamics to assist with determining whether change is natural or a result of the potential impacts of mine closure activities such as increased suspended sediment moving downstream. The research described here used geographic object-based image analysis (GEOBIA) to classify the upper Magela Creek floodplain vegetation from WorldView-2 imagery captured over four years (2010-2013) and ancillary data including a canopy height model. A step-wise rule set was used to implement a decision tree classification. The resulting maps showed the 12 major vegetation communities that exist on the Magela Creek floodplain and their distribution for May 2010, May 2011, June 2012 and June 2013 with overall accuracies of over 80% for each map. Most of the error appears to be associated with confusion between vegetation classes that are spectrally similar such as the classes dominated by grasses. Object-based change detection was then applied to the maps to analyse change between dates. Results indicate that change between dates was detected for large areas of the floodplain. Most of the change is associated with the amount of surface water present, indicating that although imagery was captured at the same time of year, the imagery represents different stages of the seasonal cycle of the floodplain. © 2015 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/79549
Appears in Collections: 气候变化事实与影响
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作者单位: Environmental Research Institute of the Supervising Scientist, Darwin, NT, Australia
Recommended Citation:
Whiteside T,G,, Bartolo R,et al. Use of WorldView-2 time series to establish a wetland monitoring program for potential offsite impacts of mine site rehabilitation[J]. International Journal of Applied Earth Observation and Geoinformation,2015-01-01,42