青海湖面积遥感动态监测方法研究  

Dynamic monitoring of the water area of Qinghai Lake

作　　者：李婷[1] 李娜[2] 王苑[1] 

机构地区：[1]青海省基础地理信息中心,青海西宁810001 [2]青海省测绘产品质量监督检验站,青海西宁810001

出　　处：《青海大学学报（自然科学版）》2016年第4期49-54,共6页Journal of Qinghai University(Natural Science)

基　　金：基金项目:青海省第一次全国地理国情普查(2014)

摘　　要：为了科学合理地制定青海湖面积监测指标和持续监测技术流程,本文利用1974年以来的遥感影像,根据历年水位变化规律,从影像源的选择、监测时间、监测范围、投影选择、解译方法等方面,对青海湖面积遥感动态监测方法进行了分析。结果表明:(1)影像应优先选用Landsat 8;(2)遥感监测中应将每年4月初定为枯水期,7月上旬为平水期,9月为丰水期进行监测;(3)为减少投影变化,应单独设置独立投影,并投影面改正至3 200 m。通过对20世纪70年代至今青海湖面积变化的连续监测,2004年以来,青海湖面积持续增加。In order to develop scientific and rational monitoring indicators and continuous monitoring technical process of Qinghai Lake area, the monitoring methods of Qinghai Lake area were analyzed based on remote sensing images since 1974. According to the water level over the years, the source image selection, monitoring time, monitoring scope, projection and interpretation were integrated for the analysis. Results show： （ 1 ） the landsat8 image should be preferred ; （ 2 ） remote sensing monitoring defines the early April as the dry season and early July as plain water period, and September as wet period;（3 ）to reduce the variation, the projection should be separately set and projection plane should be corrected to 3 200 meters. The continuous monitoring started 70＇s indicate the water area of has been increasing since 2004.

关 键 词：青海湖面积 遥感监测 枯水期 丰水期 

分 类 号：TP79[自动化与计算机技术—检测技术与自动化装置]