期刊
JOURNAL OF SPATIAL SCIENCE
卷 55, 期 1, 页码 101-115出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/14498596.2010.487853
关键词
aerial photography; object-based image analysis; very high resolution; rangelands; vegetation classification
资金
- USDA Natural Resources Conservation Service
- USDA Agricultural Research Service
- National Science Foundation
Ultra-high-resolution digital aerial imagery has great potential to complement or replace ground measurements of vegetation cover for rangeland monitoring and assessment This research investigated object-based image analysis (OBIA) techniques for classifying vegetation in southwestern USA arid rangelands with 4 cm resolution digital aerial imagery We obtained high r-square values for the regressions relating ground- to image-based measures of percent covet (r-square values 0 82-0 92) OBIA enabled us to automate the classification process and demonstrated potential for quantifying fine-scale land covet attributes with ultra-high-resolution imagery This approach exhibits promise for nationwide application for monitoring grazing lands
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