项目名称: 亚洲中部干旱区湿地遥感制图与时空变化过程研究
项目编号: No.41201460
项目类型: 青年科学基金项目
立项/批准年度: 2013
项目学科: 地理学
项目作者: 朱长明
作者单位: 江苏师范大学
项目金额: 25万元
中文摘要: 亚洲中部干旱区是全球变化的一个敏感区,湿地是全球变化的指示器,干旱区湿地的扩张或萎缩对于区域生态环境变化具有指示和放大的作用。本项目拟利用Landsat、CBERS、SPOT等资源卫星数据以及Topex、Jason、OSTM、ICESat等卫星测高数据,研究多时相遥感湿地信息自动提取技术,实现近50年以来研究区湿地面积变化制图,并获取近几十年来亚洲中部干旱区典型湖泊湿地水位与面积的变化信息。在此基础上,以封闭流域为单元,从区域尺度上对比研究干旱区不同流域湿地的时空格局变化,研究长时间序列不同类型湖泊湿地的时空变化过程,分析流域范围内湿地变化与冰川、降水、气温、蒸散以及人类活动的关系。拟通过遥感技术重建近50年亚洲中部干旱区湿地变化的时空过程,探索干旱区湿地变化的特征及机理,准确评估气候变化和人类活动对干旱区湿地的影响,为干旱区湿地资源开发与保护提供信息支持与科学支撑。
中文关键词: 干旱区湿地;遥感监测;自动制图;时空变化;全球变化
英文摘要: Arid area in center Asia is a senstive and vulnerable area of global change. And wetland ecosystem is an indicator of global change. So, the expansion or contraction of wetlands in those arid areas palys a indicative and amplification role in the regional ecological environment changes. This project will use multisource satellite imagery and satellite altimertry data to achieve nearly 50 years arid wetland mornitoring and mapping base on multisource remote sensing information extraction technology, retrieve the wetland water level of the different types of lakes and the area change information in arid central Asia in recent decades. On this basis, each closed basin as a unit, comparative study the wetland spatial and temporal pattern change between the arid areas wetlands in different watersheds on regional scale, research the spatial and temporal changes in the long time series on different types of lake wetlands, analysis the relationships of wetland changes with glaciers, precipitation, temperature, evapotranspiration and human activities in a colsed basin. Through the research, we will reconstruct the wetland change process in central Asia district through remote sensing technology, strive to fully recognize the characteristics and mechanism of arid areas wetlands change, evaluate the impact of cliamte chang
英文关键词: Arid wetland;Remote sensing survey;wetland mapping;Spatio-temporal change;Global climate change