摘要
利用2005-2009年250 m×250 m的EOS/MODIS卫星资料,通过预处理、几何校正,在C++环境下,进行水体判识与面积计算,对艾比湖湖区水域面积进行了计算,得到了逐旬的遥感动态监测数据,结果表明:1.艾比湖有着显著的季节性变化,由春到秋,艾比湖湖区水体面积总体呈现逐渐减少的趋势;2.从年际变化来看,自2005-2009年,艾比湖湖区水域面积也呈现逐年减少的趋势,年平均值由2005年的807.97 Km2逐渐缩减为2009年的498.84 Km2,湖区水域面积缩小明显;3.湖区水域面积年内最大值多出现在春季,年内最小值多出现在秋季,但秋末湖区水域面积相对秋初又有所增加;4.从2005-2009年五年内监测到的艾比湖湖区水域面积旬平均最高峰出现在四月中旬,且五月下旬湖区面积会出现次高峰,旬平均最小值出现在十月上旬。旬平均最高峰主要是山区融雪和降水的共同作用所致,次高峰主要是由降水所致。
Lake as an important resource in our country,play a key role in the national economic development,so enhance the variety of lake area in real and dynamic time,obtain the change status of lake area,which has so many advantages in keep balance of eco-system and protect the environment so on and so forth.So we choose a consecutive of 5 years Modis data by using 250 meter resolution image since 2 005 to 2 009,Based on the Eos/Modis data incept and dispose system,by using per-processing,geometry emendation,after that,judge and calculate the water area of Ebinur lake by using C＋＋ program,and we got the dynamic variety of Ebinur lake by every ten days.The results show that： 1.The area of Ebinur lake was decreased from Spring to autumn;2.The area of Ebinur lake was also decreased year by year from 2 005 to 2 009,and the average lake area was changed from 807.97 Km2 of the year 2 005 to 498.84 Km2 of the year 2 009,the lake area shrink distinctly;3.The maximal lake area appeared in spring and the minimal lake area appeared in Autumn,but the lake area of the last ten-day was always bigger than the first ten-day of the October;4.There were two peak value of the Ebinur lake area in Spring,first one occurred in the middle ten-day of April,which was bigger than the second peak value that occurred in the last ten-day of May,and the first peak value was caused by the melted snow and the rainfall,and the second peak value was caused only by the rainfall.
出处
《新疆师范大学学报（自然科学版）》
2010年第4期20-24,共5页
Journal of Xinjiang Normal University(Natural Sciences Edition)
基金
新疆大学绿洲生态实验室开放课题(XJDX0206-2009-05)
