沙化土地信息提取研究

doi:10.11707/j.1001-7488.20050314

Scientia Silvae Sinicae ›› 2005, Vol. 41 ›› Issue (3): 82-87.doi: 10.11707/j.1001-7488.20050314

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Information Extraction of Sandy Land

Wang Xiaohui,Li Zengyuan,Gao Zhihai,Bai Lina,Che Xuejian,Wang Fengyu

Institute of Forest Resource Information Techniques, CAF Beijing100091

Received:2005-01-31 Revised:1900-01-01 Online:2005-05-25 Published:2005-05-25

Abstract

Abstract:

Multi-layer remote sensing information extraction of sandy land using multi-temporal Landsat ETM+ images was developed based on spectral characteristic analysis. Vegetation coverage was used to determine the degree of sandy land according to the land classification standard of the national desertification survey. By regression model of NDVI and vegetation coverage, the relationship was established. The degree of sandy land was divided by the threshold of NDVI, and the degree map of sandy land was derived.

Key words: multi-temporal images, multi-layer extraction, sandy land degree, vegetation coverage, NDVI

Wang Xiaohui;Li Zengyuan;Gao Zhihai;Bai Lina;Che Xuejian;Wang Fengyu. Information Extraction of Sandy Land[J]. Scientia Silvae Sinicae, 2005, 41(3): 82-87.

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Information Extraction of Sandy Land

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