1973—2017年东平湖湿地长时序遥感监测与突变分析  

Analysis of the wetland change and its Driving Force of Dongping Lake during 1973 to 2017

作　　者：赵南 朱长明 张新 沈谦 杨程子 ZHAO Nan;ZHU Changming;ZHANG Xin;SHEN Qian;YANG Chengzi(College of Geography and Geomatics,Jiangsu Normal University;State Key Laboratory of Remote Sensing Science,Institute of Remote Sensing and Digital Earth,Chinese Academy of Sciences,Beijing 100101,China)

机构地区：[1]江苏师范大学地理测绘与城乡规划学院,江苏徐州221116 [2]中国科学院遥感与数字地球研究所,北京100101

出　　处：《海洋湖沼通报》2020年第1期93-101,共9页Transactions of Oceanology and Limnology

基　　金：国家重点研发计划(2017YFB0504204);国家自然科学基金项目(41201460,61473286);国家科技支撑计划(2015BAJ02B01);江苏省研究生创新工程项目(KYCX17-1692)资助。

摘　　要：湖泊湿地是流域气候变化的敏感因子和指示器,湖沼湿地时空演化及对全球变化的响应研究一直是当前湖泊科学研究的热点。文章综合利用遥感和流域站点观测数据,重建了1973-2017东平湖湖沼湿地变化时序信息,并结合M-K突变检测,定量分析了在气候变化和人类活动的影响下过45a东平湖湖沼湿地的时序演化特征以及突变拐点。研究结果表明:(1)1973-2017东平湖水域面积整体上呈现增加的趋势;沼泽面积呈现缓慢减小的趋势。(2)东平湖冬季水域面积最大,夏季最小;沼泽面积则呈相反的特征。(3)在演化过程上,湖水面积在1986年出现了突然减小,这一趋势一直延续了近10a,1995年之后再次呈现增加趋势;沼泽面积在1989年之后呈现逐年减小的趋势。在变化原因上,通过站点数据分析对比,认为防洪蓄洪工程和污染物排放等人类活动是东平湖湖沼湿地演化的主要原因,而气候变化并非这一变化特征的决定因素。Lake wetland is a sensitive factor and indicator to global climate changes.Spatio-temporal evolution characteristics of lake marsh wetland and its response to global change research is a hot topic in lake scientific domain.Remote sensing and watershed site observation data are comprehensively used to obtain temporal and spatial information of the Dongping lake wetlands changes during the period from1973 to 2017.The temporal series evolutionary characteristics and mutation inflection points of Dongping lake wetlands were conducted by M-K detection under the influence of climate change and human activities in the past 45 years.The results show that:(1)The water area of Dongping lake in 1973-2017 showed an increase trend overall.However,the marsh area presented a slow decrease trend.(2)Dongping lake has the largest water area in winter and the smallest in summer,and the marsh area shows the opposite characteristics.(3)In the processing of evolution,the lake area has been began to decline in 1986 and this trend has continued nearly 10 years.It has shown an increasing trend since1995.The marsh area has been decreasing year by year after 1989.The change of Dongping lake is the result of natural conditions and human activities.However,through site data analysis and comparison,we consider that human activities such as flood prevention and flood storage projects and pollutant discharge are the main deriving force of Dongping lake wetlands change,and climate change is not a determinant factor in short time.

关 键 词：东平湖湿地 遥感制图 时空演化 时序分析 驱动机制 

分 类 号：TP79[自动化与计算机技术—检测技术与自动化装置] P962[自动化与计算机技术—控制科学与工程]