Arid
DOI10.3390/rs11141638
Optimized Stratification for Mapping Riparian Vegetation in Arid and Semiarid Environments
McGwire, Kenneth C.
通讯作者McGwire, Kenneth C.
来源期刊REMOTE SENSING
ISSN2072-4292
出版年2019
卷号11期号:14
英文摘要This paper describes a method of mapping riparian vegetation in semi-arid to arid environments using the Landsat normalized difference vegetation index (NDVI). The method successfully identified a range of riparian community types across the entire state of Nevada, USA, which spans 7 degrees of latitude and almost 4000 m of elevation. The landscape was stratified into units of similar elevation and solar exposure, and riparian areas were identified as having anomalously high NDVI within a local neighborhood. Thousands of calibration points were used in a simplex optimization to select the spatial neighborhood, the elevation and insolation strata, the minimum NDVI to be considered as potentially riparian, the number of standard deviations from the mean for an anomaly to be classified as riparian, and a limit on upslope position. Mapping of subpixel riparian corridors was improved by applying a directional high-pass filter to the NDVI data. Irrigated areas in agricultural and urban areas were removed based on land ownership maps and manual editing. The final map was tested with 400 independent test points: producer's accuracy was 84.6% and user's accuracy was 93.5%. This method should be broadly useful for mapping riparian features across large and complex regions with arid to semi-arid environments.
英文关键词Landsat NDVI rangelands wetlands streams riparian
类型Article
语种英语
国家USA
开放获取类型gold
收录类别SCI-E
WOS记录号WOS:000480527800008
WOS关键词ZONES ; WATER ; DELINEATION ; ECOSYSTEMS ; INDICATORS ; DIVERSITY ; CLIMATE ; AREAS ; NDVI
WOS类目Environmental Sciences ; Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology
WOS研究方向Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology
来源机构Desert Research Institute
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/218394
作者单位Desert Res Inst, Reno, NV 89512 USA
推荐引用方式
GB/T 7714
McGwire, Kenneth C.. Optimized Stratification for Mapping Riparian Vegetation in Arid and Semiarid Environments[J]. Desert Research Institute,2019,11(14).
APA McGwire, Kenneth C..(2019).Optimized Stratification for Mapping Riparian Vegetation in Arid and Semiarid Environments.REMOTE SENSING,11(14).
MLA McGwire, Kenneth C.."Optimized Stratification for Mapping Riparian Vegetation in Arid and Semiarid Environments".REMOTE SENSING 11.14(2019).
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