干旱区生态环境知识资源中心(Arid): A LANDSAT study of ephemeral and perennial rangeland vegetation and soils

Arid

报告编号	E77-10150, NASA-CR-152650, YA-300-1700-1012
来源ID	NTRS_Document_ID: 19770015635
	A LANDSAT study of ephemeral and perennial rangeland vegetation and soils
	Salmon-Drexler, B. C.; Bonner, W. J.; Vincent, R. K.
英文摘要	The author has identified the following significant results. Several methods of computer processing were applied to LANDSAT data for mapping vegetation characteristics of perennial rangeland in Montana and ephemeral rangeland in Arizona. The choice of optimal processing technique was dependent on prescribed mapping and site condition. Single channel level slicing and ratioing of channels were used for simple enhancement. Predictive models for mapping percent vegetation cover based on data from field spectra and LANDSAT data were generated by multiple linear regression of six unique LANDSAT spectral ratios. Ratio gating logic and maximum likelihood classification were applied successfully to recognize plant communities in Montana. Maximum likelihood classification did little to improve recognition of terrain features when compared to a single channel density slice in sparsely vegetated Arizona. LANDSAT was found to be more sensitive to differences between plant communities based on percentages of vigorous vegetation than to actual physical or spectral differences among plant species.
英文关键词	ARIZONA MONTANA RANGELANDS SOILS VEGETATION EARTH RESOURCES PROGRAM MAPPING MAXIMUM LIKELIHOOD ESTIMATES MULTISPECTRAL BAND SCANNERS
出版年	1976
报告类型	Technical Report
语种	英语
国家	美国
URL	http://hdl.handle.net/2060/19770015635
资源类型	科技报告
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/258683
推荐引用方式 GB/T 7714	Salmon-Drexler, B. C.,Bonner, W. J.,Vincent, R. K.. A LANDSAT study of ephemeral and perennial rangeland vegetation and soils,1976.