Analysis of the natural environmental change in the upper and lower drainage basin of River Tenryu

天龙江上下流域自然环境变化分析

• 批准号: 15500681
• 负责人: YANAGIMACHI Harumi
• 金额: $ 2.18万
• 依托单位: SHINSHU UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2003
• 资助国家: 日本
• 起止时间: 2003 至 2006
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-15500681/
• 关键词: Lake Suwa; water quality distribution; remote sensing; transparency; image database; Lake Hamanako; Lake Inohanako; 水温; クロロフィルa; 懸濁物質; 溶存酸素

Spatial water quality distribution in summer of Lake Suwa, Lake Hamanako and Lake Inohanako were estimated using remote sensing data and observed water quality parameters. The results are as follows.Principal distribution pattern of water quality was extracted in Lake Suwa. Where the densities of suspended solids and chlorophyll-a are high, and also the transparency is low, water temperature is high, and vice versa. This distribution pattern appears on 7days of the 12 observation dates. Besides, the correlation coefficients among suspend solids, chlorophyll-a and transparency are significant almost on the observation dates of 2002 to 2006. From these facts, it can be concluded that the suspend solids are derived principally from phytoplankton.Two scenes' standard deviations of Landsat TM/ETM+ Band 4 are relatively larger than the other six scenes. From principal component analysis of these two scenes, it is clear that the first and second components correspond adequately with Band1 to … More 4, and Band6, respectively. The former explains the distribution of chlorophyll-a, suspend solids and transparency, while the distribution of water temperature is explained by the latter. The first component is inferred to be correlated to the infection area of Microcystis blooms. Correlation of Band 6 to the other Band is not constant.We collected and compiled the water quality parameters of Lake Hamanako and Lake Inohanako. Annual and year to tear change of the water quality of Lake Hamanako and the tendency of transparency distribution in Lake Inohana were reveled.We developed the Lake Suwa image database for the sake of supporting the environmental preservation research and monitoring of Lake Suwa. This database is a collection of the three kinds of photographs. These are the live camera images of Lake Suwa surface, the photographs of flood around Lake Suwa which occurred in July 2006 and the aerial photographs of Lake Suwa which had been taken from the sky with the helicopter. This database is accessible through the Internet. Less

使用遥感数据和观察到的水质参数估算了Suwa湖，Hamanako湖和Inohanako湖的夏季的空间水质分布。结果如下。如果悬浮固体和叶绿素A的密度很高，并且透明度也很低，水温很高，反之亦然。这种分布模式出现在12个观测日期的7天。此外，悬浮固体之间的相关系数几乎在2002年至2006年的观察日期上都显着。从这些事实来看，可以得出结论，悬浮固体主要来自浮游植物。从对这两个场景的主要成分分析中，很明显，第一组和第二个组件与band1适当地对应到…更多4和band6。前者解释了叶绿素-A的分布，悬浮固体和透明度，而水温的分布由后期解释。推断第一个成分与微囊血液的感染区域相关。频段6与另一个频段的相关性并不恒定。我们收集并编译了哈马纳科湖和伊诺哈那科湖的水质参数。为了支持Suwa湖的环境保护研究和监测，我们开发了苏瓦湖图像数据库的年度和年度变化的水质变化以及Inohana湖的透明度分布的趋势。该数据库是三种照片的集合。这些是Suwa湖地面的现场摄像头图像，Suwa湖周围发生的洪水照片发生在2006年7月，以及Suwa湖的航拍照片，该照片已与直升机一起从天上拍摄。该数据库可通过Internet访问。较少的

项目成果

2006年夏季における諏訪湖の水平・垂直水質分布

2006年夏季诹访湖水质水平和垂直分布

• 发表时间: 2007
• 期刊: 信州大学 環境科学年報 29
• 作者: 柳町晴美;花里孝幸;宮原裕一;山本雅道
• 通讯作者: 山本雅道

Creating the database of Lake Suwa photographs and the application of this database

诹访湖照片数据库的建立及其应用

• 发表时间: 2006
• 期刊: Proceedings of Shinshu University International Symposium 2006, Mountainous Environment - Past, Present and Future -
• 作者: HIRAI;Yukihiro;Harumi Yanagimachi
• 通讯作者: Harumi Yanagimachi

2005年夏季における諏訪湖の水平・垂直水質分布

2005年夏季诹访湖水质水平和垂直分布

• 发表时间: 2006
• 期刊: 信州大学環境科学年報 第28巻(印刷中)
• 作者: 柳町晴美;花里孝幸;宮原裕一
• 通讯作者: 宮原裕一

2004年夏季における諏訪湖の水質分布

2004年夏季诹访湖水质分布

• 发表时间: 2005
• 期刊: 信州大学 環境科学年報 第27巻
• 作者: 柳町晴美;花里孝幸;宮原裕一
• 通讯作者: 宮原裕一

Image database of Lake Suwa

诹访湖图像数据库

• 发表时间: 2007
• 期刊: Research Report of the Research and Education Center for Inlandwater Environment, Shinshu University 5(in print)
• 作者: 柳町晴美;花里孝幸;宮原裕一;山本雅道;Toshimitsu Tabe;柳町晴美;Harumi Yanagimachi;田部俊充;Harumi Yanagimachi
• 通讯作者: Harumi Yanagimachi