| 近20年闽江福州段水域悬浮物时空变化的遥感分析 |
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| 引用本文： | 温小乐,徐涵秋.近20年闽江福州段水域悬浮物时空变化的遥感分析[J].环境科学学报,2009,29(3):648-654. |
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| 作者姓名： | 温小乐 徐涵秋 |
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| 作者单位： | 福州大学环境与资源学院,空间数据挖掘与信忠共享教育部重点实验室,福州 350002 |
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| 基金项目： | 福建省教育厅重点项目 |
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| 摘 要： | 利用同步的遥感影像光谱信息和实测水质数据建立了闽江福州段的悬浮物遥感模型,结合多时相卫星遥感影像,分析了闽江福州段水域在1986～2006年间悬浮物的时空变化规律及其变化原因.研究结果表明.利用悬浮物定量遥感模型可以快速有效地揭示研究水域长期的水质变化规律.总体而言,闽江福州段的悬浮物浓度在这20年间稳中有降,悬浮物浓度不变和浓度下降的水域面积比例分别占到35.59%和45.79%.而高悬浮物浓度的水域面积所占比例则从8.52%下降至0.13%,整体水质趋于好转;但仍有局部水域的悬浮物浓度在此期间呈现上升的趋势,水质有所恶化,这主要是受到周边地区土地利用变化及污水直接排放的影响.
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| 关 键 词： | 遥感模型 悬浮物变化 闽江 |
| 收稿时间： | 6/3/2008 12:00:00 AM |
| 修稿时间： | 2008/10/17 0:00:00 |
Remote sensing analysis of the spatial-temporal variations of suspended sediment in the lower Min River(Fuzhou portion) during the last two decades |
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| WEN Xiaole and XU Hanqiu.Remote sensing analysis of the spatial-temporal variations of suspended sediment in the lower Min River(Fuzhou portion) during the last two decades[J].Acta Scientiae Circumstantiae,2009,29(3):648-654. |
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| Authors: | WEN Xiaole and XU Hanqiu |
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| Institution: | WEN Xiaole,XU Hanqiu Key Laboratory of Spatial Data Mining , Information Sharing,China's Ministry of Education,College of Environment , Resources,Fuzhou University,Fuzhou 350002 |
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| Abstract: | Models for predicting Suspended Sediment Concentrations(SSC) of the Lower Min River(Fuzhou portion) were established using remote sensing data and synchronal sampled in situ water data.The models were then applied to compute the SSC of the Lower Min River in 1986,1996 and 2006,using three Landsat TM images.Examination of multitemporal images revealed the spatial and temporal variations of SSC in the studied river portion from 1986 to 2006.The results show that the SSC in the river portion generally decrease... |
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| Keywords: | remote sensing model SSC variations Min River |
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