| 摘要: |
| 利用多星遥感影像动态监测了2015年春季太湖北部湖湾沉水植被分布的变化过程，并对水生植被遥感监测中的几个关键问题展开了探讨。决策树方法获取的水生植被分布结果表明，2015年4月28日太湖北部湖湾发现明显沉水植被分布面积约11.2km2，与2014年同期相比，新出现的较大面积沉水植被分布区域主要集中在田鸡山西和锡东水厂附近。提出应及时清理打捞，避免水生植被死亡腐烂，威胁水质安全。 |
| 关键词: 遥感 沉水植被 动态监测 太湖 |
| DOI： |
| 分类号:X87 |
| 基金项目:江苏省环境监测基金资助项目（1416）；高分辨率对地观测系统重大专项基金资助项目（05-Y30B02-9001-13/15-WX2）；国家水体污染控制与治理科技重大专项基金资助项目（2012ZX07506003）；江苏省普通高校研究生科研创新计划基金资助项目（KYLX15_0745） |
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| Dynamic Monitoring of Distribution of Submerged Vegetation in the North of Taihu Lake in Spring Based on Multi source Remote Sensing Images |
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SHI Hao，ZHANG Ting，LI Xuwen，NIU Zhichun，WANG Tiantian，LI Yang1,2,3
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1. Jiangsu Environmental Monitoring Center，Nanjing，Jiangsu 210036，China;2. College of Forestry，Nanjing Forestry University，Nanjing，Jiangsu 210037，China;3. Ministry of Education Key Laboratory of Virtual Geographic Environment，Nanjing Normal University，Nanjing，Jiangsu 210023，China
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| Abstract: |
| The distribution and variation of submerged vegetation in the north of Taihu Lake in the spring of 2015 were monitored using multi source remote sensing images. This paper discussed the key problems in monitoring aquatic vegetation by using the technique. The monitoring results acquired on 28th of April based on the decision tree method showed that the area of submerged vegetation in the north of Taihu Lake was about 11.2 km2. Compared with the results obtained from the same period in 2014，the newly emerged large areas of submerged vegetation were mainly concentrated near the west of Tianji Mountain and around of Xidong Waterworks. It was suggested that submerged vegetation should be cleared away and salvaged timely to avoid the death and decay of aquatic vegetation，which posed threats to water quality. |
| Key words: Remote sensing Submerged vegetation Dynamic monitoring |
