【作者】 温小乐； 徐涵秋；

【Author】 WEN Xiaole,XU Hanqiu~* (Key Laboratory of Spatial Data Mining and Information Sharing,China’s Ministry of Education,College of Environment and Resources,Fuzhou University,Fuzhou 350108,China)

【机构】 福州大学环境与资源学院空间数据挖掘与信息共享教育部重点实验室；

【摘要】 利用基于同步的影像光谱数据和实测水质数据建立的悬浮物定量遥感模型,揭示了2001-2006年间闽江福州段水域的悬浮物浓度分布及其动态变化趋势。研究结果表明,闽江福州段悬浮物浓度在空间上呈现"东高西低"的分布特征;在此五年间,悬浮物浓度增加的水域面积仅占到总面积的9.44%,而浓度不变和浓度下降的水域面积分别占到38.78%和51.78%,整体水质日趋改善;主城区沿线水域水质未受到城市发展的不利影响,但在快安-马尾段水域,悬浮物浓度增加显著,局部水质有恶化趋势,这主要源于周边大量新开发用地带来的强烈水土流失。更多还原

【Abstract】 The models have been established to reveal the distribution of suspended sediments concentration(SSC) and its dynamic change of the Lower Min River.The results show that the areas of enhancing SSC accounted for 9.44%of the study water area from 2001 to 2006,on the other hand,the areas of constant SSC and descending SSC have respectively accounted for 38.78%and 51.78%during the study years.All these indicate the water quality of the study river portion was generally improved.Specifically,the water quality along the main urban zone of Fuzhou was not adversely affected by the urban expansion,otherwise, there were some water areas such as Kuai-an and Ma-wei districts showing significant increase in SSC during the study period.This was due largely to intense soil erosion caused by plenty of newly developed land in surrounding areas.更多还原