基于遥感光谱特征的喀斯特石漠化信息提取

不同的地物特征具有不同的光谱值,不同的石漠化强度级别由于影响因子不同而具有不同的光谱特性,利用遥感光谱分析方法,对各种石漠化强度样区进行光谱采样,分析其在各波段的谱值关系,建立石漠化的提取模型,提取出石漠化的空间格局和强度信息图,作为研究区石漠化生态治理与重建的基础数据支持。结果表明,基于光谱特征的石漠化信息提取作为一种研究方法,在研究喀斯特地区石漠化问题时具有较强的可行性和实用性。

Spectral feature-based model for extracting karst rock-desertification from remote sensing image

Different ground features have different spectral values on the remote sensing image. Each type of the rock desertification has its own spectral characteristics . Based on the analysis method of image spectral knowledge, the karst rock - desertification extracting model was built under the direction of the relationship of the spectral value of each type rock desertification and their different bands. The spatial distribution of rock desertification was mapped as important base data support for ecological rehabilitation and management in study area. As a method, the conclusion shows that the spectral feature - based model for extracting rock - desertification information is an effective way on studying the problem of karst rock - desertification because of its feasibile and applicabile.