近30年来浑善达克沙地-湿地的气候变化发展趋势及适应对策

应用遥感和地理信息等技术手段,结合野外实地考察验证,获取浑善达克沙地内部和周边湿地的时空分布和动态变化数据,主要对沙地和湿地的利用现状、动态变化及其研究区未来气候变化演变趋势进行分析。结果表明:近30年来浑善达克沙地及其周边湿地面积经历了先缩小后扩大再缩小的发展趋势,湖泊面积先增加后减小;流动沙地面积增加,半固定沙地面积减小;年平均气温呈逐年递增的趋势,年降水量从70年代开始递增,90年代最大,2001~2005年平均降水量又有所下降,而年蒸发量呈稳定下降趋势。同时,分析了沙地与湿地动态变化之间的内在联系,以及影响沙地与湿地变化的主要气候因子,提出该区域适应气候变化的对策。

Study on development trend of climate change and the countermeasures in Hunshandake sand and wetland in recent 30 years

Using remote sensing and geography information,and field investigation,space and time distribution and the dynamic change datum of sand and wetland were gained,present situation,the dynamic change and evolution tendency of the climate change in future about the sand and the wetland in the research area were analyzed.The results indicated that the wetland area reduced firstly and expanded and reduced again in the Hunshandake sand from 1975 to 2005,the area of lake increased firstly and then reduced;the area ...