Arid
DOI10.5194/isprsarchives-XLI-B8-403-2016
SPATIOTEMPORAL DYNAMICS OF SURFACE WATER EXTENT FROM THREE DECADES OF SEASONALLY CONTINUOUS LANDSAT TIME SERIES AT SUBCONTINENTAL
Tulbure, M. G.1; Broich, M.1; Stehman, Stephen V.2
通讯作者Tulbure, M. G.
会议名称23rd Congress of the International-Society-for-Photogrammetry-and-Remote-Sensing (ISPRS)
会议日期JUL 12-19, 2016
会议地点Prague, CZECH REPUBLIC
英文摘要

Surface water is a critical resource in semi-arid areas. The Murray-Darling Basin (MDB) of Australia, one of the largest semi-arid basins in the world is aiming to set a worldwide example of how to balance multiple interests (i.e. environment, agriculture and urban use), but has suffered significant water shrinkages during the Millennium Drought (1999-2009), followed by extensive flooding. Baseline information and systematic quantification of surface water (SW) extent and flooding dynamics in space and time are needed for managing SW resources across the basin but are currently lacking.


To synoptically quantify changes in SW extent and flooding dynamics over MDB, we used seasonally continuous Landsat TM and ETM+ data (1986 - 2011) and generic machine learning algorithms. We further mapped flooded forest at a riparian forest site that experienced severe tree dieback due to changes in flooding regime. We used a stratified sampling design to assess the accuracy of the SW product across time.


Accuracy assessment yielded an overall classification accuracy of 99.94%, with producer's and user's accuracy of SW of 85.4% and 97.3%, respectively. Overall accuracy was the same for Landsat 5 and 7 data but user's and producer's accuracy of water were higher for Landsat 7 than 5 data and stable over time


Our validated results document a rapid loss in SW bodies. The number, size, and total area of SW showed high seasonal variability with highest numbers in winter and lowest numbers in summer. SW extent per season per year showed high interannual and seasonal variability, with low seasonal variability during the Millennium Drought.


Examples of current uses of the new dataset will be presented and include (1) assessing ecosystem response to flooding with implications for environmental water releases, one of the largest investment in environment in Australia; (2) quantifying drivers of SW dynamics (e.g. climate, human activity); (3) quantifying changes in SW dynamics and connectivity for water dependent organisms; (4) assessing the impact of flooding on riparian vegetation health. The approach developed here is globally applicable, relevant to areas with competing water demands (e.g. Okavango River delta, Mekong River Basin). Future work should incorporate Landsat 8 and Sentinel-2 data for continued quantification of SW dynamics.


英文关键词Landsat time-series seasonally continuous surface water dynamics flooding dynamics Murray-Darling Basin Australia competing water demands drought random forest long term trends water river basin water management
来源出版物XXIII ISPRS CONGRESS, COMMISSION VIII
ISSN2194-9034
出版年2016
卷号41
期号B8
页码403-+
EISBN*****************
出版者COPERNICUS GESELLSCHAFT MBH
类型Proceedings Paper
语种英语
国家Australia;USA
收录类别CPCI-S
WOS记录号WOS:000393156000068
WOS类目Geography, Physical ; Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences ; Remote Sensing
WOS研究方向Physical Geography ; Geology ; Meteorology & Atmospheric Sciences ; Remote Sensing
资源类型会议论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/304971
作者单位1.Univ New South Wales, Sch Biol Earth & Environm Sci, Sydney, NSW, Australia;
2.SUNY Syracuse, Dept Forest & Nat Resources Management, Syracuse, NY USA
推荐引用方式
GB/T 7714
Tulbure, M. G.,Broich, M.,Stehman, Stephen V.. SPATIOTEMPORAL DYNAMICS OF SURFACE WATER EXTENT FROM THREE DECADES OF SEASONALLY CONTINUOUS LANDSAT TIME SERIES AT SUBCONTINENTAL[C]:COPERNICUS GESELLSCHAFT MBH,2016:403-+.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Tulbure, M. G.]的文章
[Broich, M.]的文章
[Stehman, Stephen V.]的文章
百度学术
百度学术中相似的文章
[Tulbure, M. G.]的文章
[Broich, M.]的文章
[Stehman, Stephen V.]的文章
必应学术
必应学术中相似的文章
[Tulbure, M. G.]的文章
[Broich, M.]的文章
[Stehman, Stephen V.]的文章
相关权益政策
暂无数据
收藏/分享

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。