陕北沙漠-黄土过渡带现代地貌过程及对气候与人类活动的响应机制

项目名称： 陕北沙漠-黄土过渡带现代地貌过程及对气候与人类活动的响应机制

项目编号： No.41301007

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 天文学、地球科学

项目作者： 郭伟

作者单位： 西安交通大学

项目金额： 28万元

中文摘要： 陕北沙漠-黄土过渡带地处多重界面区域，生态环境极其脆弱，土地沙漠化是影响该地区可持续发展的重大环境问题。本课题以陕北沙漠-黄土过渡带作为研究区，融合野外观测、实验分析和定量遥感反演多种监测手段，获取研究区现代地貌景观格局以及地貌过程物质、能量微观要素的时间序列图谱；通过时间序列及地统计学等相关技术分析，揭示沙漠-黄土过渡带地貌形态、物质和能量的时空演变特征；进一步将气象观测数据、社会经济统计数据和地貌要素时间序列图谱集成于统一的地理信息平台，运用GIS空间分析和数理统计方法，探讨地貌过程中驱动要素-宏观要素-微观要素三者之间的时空耦合关系，阐明气候变化和人类活动加剧背景下的陕北沙漠-黄土过渡带现代地貌过程与响应机制，为区域生态环境建设和可持续发展提供科学依据。

中文关键词： 现代地貌过程；遥感；地理信息系统；沙漠黄土过渡带；

英文摘要： The desert-loess transitional zone in the north of Shaanxi Province is located at the multi-interfaces area, where the ecological environment is very vulnerable. Land desertification has significantly influenced the regional sustainable development. This research selects the desert-loess transitional zone of north Shaanxi Province as study area. The time series atlas of landscape patterns and geomorphic factors about material and energy are set up by the integration of field observations, experimental analysis and quantitative remote sensing inversion models.The spatial and temporal evolutional laws and trends of landform configuration and geomorphic material and energy are studied by using time series analysis and geostatistic method. In addition, by using the multi-source spatial data integration platform,the meteorological observation data, socio-economic statistics data and the atlas of geomorphic elements can be stored and analysed in the unify geographic reference and data standard. Therefore, mathematical statistics and GIS simulation techniques are used to explore the coupling relationships among the driving factors, macro factors and micro factors of the geomorphic process. Deep understanding of modern geomorphic process and its response mechanism to climate change and human activities will provide sci

英文关键词： modern geomorphic process；remote sensing；geographic information system；desert-loess transitional zone；