【摘要】 塔里木河流域面临植被退化、土地荒漠化等生态问题，为解决这一问题，需要开展荒漠化敏感性评估。采用遥感、全球定位系统和地理信息系统，构建土壤、植被、气候和管理质量等指标定量评估，利用地中海荒漠化与土地利用(Mediterranean Desertification and Land Use，MEDALUS)模型计算敏感性指数获取荒漠化敏感区，在此基础上分析荒漠化敏感性的驱动因素。结果表明，塔里木河流域属于极高敏感区。荒漠化敏感性的空间格局是中部高、北部低，主要由与人类活动有关的管理质量指数决定。从绿洲内至绿洲外，荒漠化敏感性逐渐升高，大致呈层状分布，表明人类活动对荒漠化影响显著，建议加强和巩固绿洲外围的防护体系建设。更多还原

【Abstract】 The Tarim River basin is facing ecological problems such as vegetation degradation and land desertification.To address these issues,it is necessary to conduct desertification sensitivity assessments.The remote sensing,global positioning system,and geographic information system are used to construct quantitative assessment of soil,vegetation,climate and management quality,and the Mediterranean Desertification and Land Use (MEDALUS) model is used to calculate sensitivity index to obtain desertification sensitive areas.On this basis,driving factors of desertification sensitivity are analyzed.The results show that the Tarim River basin belongs to the extremely sensitive area.The spatial pattern of desertification sensitivity is high in the central region and low in the northern region,which is mainly determined by the management quality index related to human activities.The sensitivity of desertification increased gradually from inside oasis to outside oasis,and the distribution was roughly stratified,indicating that human activities have a significant impact on desertification.It is suggested to strengthen and consolidate the protection system construction of the oasis periphery.更多还原