石漠化土地分级指征及其遥感影像特征分析——以粤北岩溶山区为例

 建立准确的石漠化土地分级指征及其卫星遥感影像特征是提高石漠化土地监测与评价的基础和关键。以生态基准面概念为理论依据，在综合性、主导性、可操作性原则指导下，选取基岩、植被、土壤、土地利用等指标，建立了粤北山区石漠化土地分级指征，并提出了各级石漠化土地的解译标志。结果表明：选取的分级指征及解译标志能够有效地揭示粤北石漠化土地的现状。

Classifying Indices and Remote Sensing Image Characters of Rocky Desertification Lands: A Case of Karst Region in Northern Guangdong Province

The base and key of improving the evaluating and monitoring level on rocky desertification lands is to establish the exactly classifying indices and the remote sensing image characters of the landforms.According to the conception of ecological datum plane,and based on the principle of integration,leading and maneuverability,the indices including rock,vegetation,soil and land use type are chose to establish the classifying standards of rocky desertification lands.The remote sensing image interpretation keys about the four types of rocky desertification lands in northern Guangdong province have been set up.It is proved that the indices and keys can effectively disclose the status of the rocky desertification lands in study region.