贵州省六盘水市石漠化遥感-GIS评价

以六盘水市为研究区，以ETM遥感数据和1：25万的国家标准基础地理数据为主要数据源，辅助以地面样地调查数据，建立石漠化与诸因子相关关系模型，将诸因子转化为遥感定量指标，研究遥感专题信启，快速提取，形成RS、GIS集成的石漠化信息提取技术。通过以上技术处理，实现了六盘水市喀斯特地区的石漠化现状遥感—GIS快速调查评价，得到六盘水市石漠化信息地理数据库等数据，为政府部门实现宏观决策提供理论依据和科学数据。

A STUDY ON ROCKY DESERTIFICATION EVALUATION USING REMOTE SENSING AND GEOGRAPHICAL INFORMATION SYSTEM IN LIUPANSHUI CITY OF GUIZHOU PROVINCE

Rocky desertification information extraction techniques based on RS-GIS integration was studied-A case of Liupanshui city.Namely,the relevant models between rocky desertification and the relevant factors(vegetation cover rates?rock exposed rates?vegetation types?soil?elevation etc.) were established in ARC/INFO by using ETM data and the fundamental geographical data of 1:250000,supplementary ground sampling data,then these factors were changed into the quantitative index on RS for studying the thematic information extraction.Through the above techniques processing,the quickly investigation and evaluation of rocky desertification situation of Liupanshui city were achieved,and getting the geographical information data base of rocky desertification of Liupanshui city,which provides theoretical basis and scientific data for government decision.