中国农业气象 ›› 2009, Vol. 30 ›› Issue (S2): 281-284.

• 论文 • 上一篇    下一篇

基于卫星遥感的洞庭湖水体面积变化及影响因子分析

刘可群;梁益同;黄靖;刘志雄;邱爱武;   

  1. 武汉区域气候中心;湖北省气象咨讯服务中心;
  • 出版日期:2009-12-20 发布日期:2009-12-20
  • 基金资助:

    中国气象局气象卫星遥感开发与应用项目“卫星资料在暴雨监测和预报中的应用”(FiDAF-2-01);; 武汉区域气象中心科技发展基金重点项目“基于卫星遥感的区域主要湖泊面积变化评估模型研究”(QY-Z-200705)

Analysis of the Variations and Influencing Factors of Area in Dongting Lake Based on Remote Sensing Satellite

LIU Ke-qun1,LIANG Yi-tong1,HUANG Jing1,LIU Zhi-xiong1,QIU Ai-wu2(1.Wuhan Regional Climate Centre,Wuhan 430074,China;2.Hubei Meterology Information Service Centers,Wuhan 430074)   

  • Online:2009-12-20 Published:2009-12-20

摘要: 利用2001-2007年EOS-MODIS数据,计算洞庭湖不同时期的水体面积,并将面积变化与城陵矶水位、流域面雨量进行相关分析。结果表明:洞庭湖水体面积与城陵矶水位有极显著的相关性,特别是下半年;洞庭湖水体面积与前期流域面雨量有较大的相关性,水体面积变化对前期某段时期的流域面雨量比较敏感,同时与百日以上时间尺度的雨量关系良好;洞庭湖水体面积季节变化明显,夏季水体面积1200~2600km2,冬季面积500~800km2,夏季是冬季面积的2~5倍;洞庭湖水体面积有逐年减少趋势,特别是冬半年较为明显,在水位相同的情况下,洞庭湖水体面积平均每年减少16.0km2。

关键词: 洞庭湖, 遥感, 水体面积变化

Abstract: The water area in Dongting Lake is an important basis for studying on wetland ecosystem and flood regulation.To explore the trends and influencing factors of water area in Dongting Lake,the water area in Dongting Lake in different periods had been identified using EOS-MODIS data from 2001 to 2007,and the correlation between the change of water area in Dongting Lake,the water level in Chenglingji and the area-rainfall were analysed.The results showed that there was a significant correlation between the water area in Dongting Lake and the water level in Chenglingji,especially in the second half year;the water area in Dongting Lake is correlated to the antecedent area-rainfall of the Dongting Lake,and the change of water area is sensitive to area-rainfall in some past period and has well correlation with the rainfall of more than 100 days time scale;the water area in Dongting Lake has seasonal variation,which is 1200~2600 km2 in summer and 500~800 km2 in winter,and the area in summer is 2~5 times than that in winter;the water area decreased year by year,especially in winter,and the water area in Dongting Lake decreased 16.0 km2 each year on the same water level.

Key words: Dongting Lake, Remote sensing, Water area variations