武汉市南湖2000—2021年水域面积时空变化分析  

Analysis of Spatiotemporal Changes in Water Area of South Lake from 2000 to 2021 in Wuhan City

作　　者：殷宗敏 杨玉龙 孙晨 柳思羽 刘学浩[1] 何文熹[1] YIN Zong-min;YANG Yu-long;SUN Chen(Wuhan Geological Survey Center of China Geological Survey,Wuhan,Hubei 430205)

机构地区：[1]中国地质调查局武汉地质调查中心,湖北武汉430205

出　　处：《安徽农业科学》2024年第17期72-75,共4页Journal of Anhui Agricultural Sciences

基　　金：国家自然科学基金项目(42107485)。

摘　　要：基于Landsat卫星数据,采用波段比值法获取2000—2021年武汉市南湖水域面积,分析南湖水域面积时空变化。结果表明:南湖2003年水域面积最大,水域面积在2000—2007年呈现缩小,2008—2012年呈现增大,2013—2021年又呈现缩小,南湖治理时间与水域面积增大时间点重合,说明湖泊治理取得了成效。南湖2000—2021年水域面积整体呈现缩小,面积缩小总量为1.02 km~2,且北面、东面的面积缩小变化最为明显,南湖水域面积在2004—2005年呈现突变性快速缩小。南湖水域面积与蒸发量存在正相关,南湖水域面积与气温存在负相关。指数平滑模型和神经网络模型(LSTM)都能预测南湖水域面积,且水域面积在2022—2024年呈现增大,但指数平滑模型预测结果更准确。Based on Landsat satellite data,the band ratio method was used to obtain the water area of South Lake in Wuhan City from 2000 to 2021,and the spatiotemporal changes of the water area of South Lake were analyzed.The results showed that in 2003,South Lake had its largest water area,with a decrease in water area during 2000-2007,an increase during 2008-2012,and another decrease during 2013-2021.The timing of South Lake’s management coincides with the period of increased water area,indicating the effectiveness of lake management.Overall,the water area of South Lake decreased from 2000 to 2021,with a total reduction of 1.02 km 2.The most significant reductions occurred on the northern and eastern sides,and there was a rapid and abrupt decrease in South Lake’s area during 2004-2005.South Lake’s water area changes exhibit a positive correlation with evaporation,and a negative correlation with temperature.Both the exponential smoothing model and the long short-term memory(LSTM)neural network model could predict South Lake’s surface area.The water area was projected to increase from 2022 to 2024.However,the predictions from the exponential smoothing model were more accurate.

关 键 词：Landsat卫星数据 水域面积 时空变化 相关性 武汉市南湖 

分 类 号：K928.43[历史地理—人文地理学]