Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018WR023031 |
Snow to Precipitation Ratio Controls Catchment Storage and Summer Flows in Boreal Headwater Catchments | |
Merio, Leo-Juhani1; Ala-aho, Pertti1; Linjama, Jarmo2; Hjort, Jan3; Klove, Bjorn1; Marttila, Hannu1 | |
2019-05-01 | |
发表期刊 | WATER RESOURCES RESEARCH |
ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2019 |
卷号 | 55期号:5页码:4096-4109 |
文章类型 | Article |
语种 | 英语 |
国家 | Finland |
英文摘要 | Catchment storage sustains ecologically important low flows in headwater systems. Understanding the factors controlling storage is essential in analysis of catchment vulnerability to global change. We calculated catchment storage and storage sensitivity of streamflow for 61 boreal headwater catchments in Finland. We also explored the connection between computed storage indices and low flow conditions. The relationships between selected climate, snow, and catchment characteristics and calculated storage properties and low flows were investigated, in order to assess the importance of different factors that render catchments vulnerable to climate and environmental change. We found that the most sensitive areas to climate change were located in the southern boreal coastal zone, with fine-grained soils and agricultural areas. In contrast, catchments in the middle and northern boreal zone, with till and peatland soils and higher snow water equivalent values, were less sensitive under current conditions. In addition, we found a threshold at a snow to precipitation ratio of 0.35. Above that threshold, summer low flows were generally sensitive to changes in snow conditions, whereas below that threshold catchment characteristics gained importance and the sensitivity was more directly related to changes in temperature and timing of rainfall. These findings suggest that a warming climate will have pronounced impacts on hydrology and catchment sensitivity related to snow quantity and snow cover duration in certain snow to precipitation ratio zones. Moreover, land use activities had an impact on storage properties in agricultural and drained peatland areas, resulting in a negative effect on low flows. |
英文关键词 | runoff snow base flow land use catchment storage headwater catchment |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000474848500027 |
WOS关键词 | LANDSCAPE CONTROLS ; CHANGING CLIMATE ; FOREST ; TOPOGRAPHY ; HYDROLOGY ; RUNOFF ; SHIFTS ; VEGETATION ; DISCHARGE ; DRAINAGE |
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/183135 |
专题 | 资源环境科学 |
作者单位 | 1.Univ Oulu, Water Energy & Environm Engn Res Unit, Oulu, Finland; 2.Finnish Environm Inst, Helsinki, Finland; 3.Univ Oulu, Geog Res Unit, Oulu, Finland |
推荐引用方式 GB/T 7714 | Merio, Leo-Juhani,Ala-aho, Pertti,Linjama, Jarmo,et al. Snow to Precipitation Ratio Controls Catchment Storage and Summer Flows in Boreal Headwater Catchments[J]. WATER RESOURCES RESEARCH,2019,55(5):4096-4109. |
APA | Merio, Leo-Juhani,Ala-aho, Pertti,Linjama, Jarmo,Hjort, Jan,Klove, Bjorn,&Marttila, Hannu.(2019).Snow to Precipitation Ratio Controls Catchment Storage and Summer Flows in Boreal Headwater Catchments.WATER RESOURCES RESEARCH,55(5),4096-4109. |
MLA | Merio, Leo-Juhani,et al."Snow to Precipitation Ratio Controls Catchment Storage and Summer Flows in Boreal Headwater Catchments".WATER RESOURCES RESEARCH 55.5(2019):4096-4109. |
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