Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018WR024302 |
Contrasting Patterns in the Decrease of Spatial Variability With Increasing Catchment Area Between Stream Discharge and Water Chemistry | |
Egusa, Tomohiro1; 39;omi2 | |
2019-08-01 | |
发表期刊 | WATER RESOURCES RESEARCH |
ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2019 |
卷号 | 55期号:8页码:7419-7435 |
文章类型 | Article |
语种 | 英语 |
国家 | Japan |
英文摘要 | Understanding how spatial variability in stream discharge and water chemistry decrease with increasing catchment area is required to improve our ability to predict hydrological and biogeochemical processes in ungauged basins. We investigated differences in this decrease of variability with increasing catchment area among catchments and among specific discharge (Q(s)) and water chemistry parameters. We defined the slope of the decrease in the variability with increasing catchment area as the rate of decrease in the standard deviation and coefficient of variation (delta(SD) and delta(CV), respectively), both of which are -0.5 for the simple mixing of random variables (random mixing). All delta(SD) and delta(CV) values of Q(s) were less than -0.5, while those of most water chemistry values were greater than -0.5, indicating that with increased catchment area the spatial variability of Q(s) decreased more steeply than for random mixing, while for water chemistry they decreased less steeply. delta(SD) and delta(CV) had linear relationships with both the spatial dissimilarity index and relative changes in parameters' mean values with increasing catchment area. It suggested that differences in delta(S)(D) or delta(CV) for Q(s) and water chemistry can be explained by the different spatial structures, where dissimilar values of Q(s) and similar values of water chemistry, respectively, are located close together in space. Differences in delta(SD) and delta(CV) according to Q(s) and water chemistry should significantly affect the determination of representative elementary area and therefore need to be considered when predicting representative elementary area from spatial variability of low-order streams. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000490973700059 |
WOS关键词 | HOT MOMENTS ; SCALE ; HEADWATER ; NETWORK ; FLOW ; PREDICTION ; FOREST ; HETEROGENEITY ; LANDSCAPE ; RESPONSES |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/185899 |
专题 | 资源环境科学 |
作者单位 | 1.Univ Tokyo, Grad Sch Agr & Life Sci, Tokyo, Japan; 2.Nagoya Univ, Inst Space Earth Environm Res, Nagoya, Aichi, Japan; 3.Tokyo Univ Agr & Technol, Dept Int Environm & Agr Sci, Tokyo, Japan; 4.Kyoto Univ, Grad Sch Informat, Dept Social Informat, Kyoto, Japan |
推荐引用方式 GB/T 7714 | Egusa, Tomohiro,39;omi. Contrasting Patterns in the Decrease of Spatial Variability With Increasing Catchment Area Between Stream Discharge and Water Chemistry[J]. WATER RESOURCES RESEARCH,2019,55(8):7419-7435. |
APA | Egusa, Tomohiro,&39;omi.(2019).Contrasting Patterns in the Decrease of Spatial Variability With Increasing Catchment Area Between Stream Discharge and Water Chemistry.WATER RESOURCES RESEARCH,55(8),7419-7435. |
MLA | Egusa, Tomohiro,et al."Contrasting Patterns in the Decrease of Spatial Variability With Increasing Catchment Area Between Stream Discharge and Water Chemistry".WATER RESOURCES RESEARCH 55.8(2019):7419-7435. |
条目包含的文件 | 条目无相关文件。 |
个性服务 |
推荐该条目 |
保存到收藏夹 |
查看访问统计 |
导出为Endnote文件 |
谷歌学术 |
谷歌学术中相似的文章 |
[Egusa, Tomohiro]的文章 |
[39;omi]的文章 |
百度学术 |
百度学术中相似的文章 |
[Egusa, Tomohiro]的文章 |
[39;omi]的文章 |
必应学术 |
必应学术中相似的文章 |
[Egusa, Tomohiro]的文章 |
[39;omi]的文章 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论