RELATIONSHIP BETWEEN RIVER BASIN CONDITIONS AND HYDRAULIC PARAMETERS AND WATER QUALITY COMPONENTS IN A RIVER IN A COLD, SNOWY REGION
-
- TAKADA Ken'ichi
- Kushiro Development and Construction Department, Hokkaido Regional Development Bureau, MLIT of Japan
-
- NAKATSUGAWA Makoto
- Toyohashi Office of River, Chubu Regional Development Bureau, MLIT of Japan
-
- MURAKAMI Yasuhiro
- Civil Engineering Research Institute for Cold Region, PWRI
-
- YAMASHITA Shoji
- Civil Engineering Research Institute for Cold Region, PWRI
Search this article
Abstract
Almost half of Japan is classified as cold and snowy in winter, and snowfall is thought to greatly affect the dynamics of water runoff and water quality. Although many researchers have clarified the relationships between such dynamics and physical conditions of a specific river basin, few studies have clarified the dynamics of water runoff and water quality and the physical conditions that basins in cold, snowy regions share with each other. This study uses quantification theory I and a multiple regression analysis to analyze the relationship between basin conditions (e.g., vegetation, geology, winter precipitation, as a share of annual precipitation) and water runoff, and that between basin conditions and water quality. The focus of this study is Hokkaido, typifies which one of the cold, snowy regions of Japan, where snowfall accounts for nearly 20 to 40% of annual precipitation. The results show that the relationship between basin conditions and water runoff is consistent with past studies, and that snow accumulation contributes to flow regime stability to some extent. The relationship between basin conditions and water quality also shows that basin geology influences most of the water quality categories examined.
Journal
-
- Journal of hydroscience and hydraulic engineering
-
Journal of hydroscience and hydraulic engineering 24 (1), 93-113, 2006-05-01
土木学会
- Tweet
Details 詳細情報について
-
- CRID
- 1571135650570735104
-
- NII Article ID
- 10021137634
-
- NII Book ID
- AA1045915X
-
- ISSN
- 09122508
-
- Web Site
- http://hdl.handle.net/10258/00009790
-
- Text Lang
- en
-
- Data Source
-
- CiNii Articles