DOI: 10.5194/hess-21-2321-2017
Scopus记录号: 2-s2.0-85019072263
论文题名: Flood risk reduction and flow buffering as ecosystem services - Part 1: Theory on flow persistence, flashiness and base flow
作者: Van Noordwijk M ; , Tanika L ; , Lusiana B
刊名: Hydrology and Earth System Sciences
ISSN: 10275606
出版年: 2017
卷: 21, 期: 5 起始页码: 2321
结束页码: 2340
语种: 英语
Scopus关键词: Aerodynamics
; Buffer amplifiers
; Climate change
; Ecology
; Ecosystems
; Flow of water
; Rain
; Stream flow
; Watersheds
; Adaptation to climate changes
; Anthropogenic changes
; Base flow components
; Ecosystem functions
; Engineering solutions
; Flood risk reduction
; Interannual variation
; Limited observations
; Floods
; baseflow
; catchment
; data assimilation
; ecosystem function
; ecosystem service
; flooding
; health monitoring
; persistence
; precipitation intensity
; risk assessment
; river flow
; time series analysis
; traditional knowledge
; water budget
英文摘要: Flood damage reflects insufficient adaptation of human presence and activity to location and variability of river flow in a given climate. Flood risk increases when landscapes degrade, counteracted or aggravated by engineering solutions. Efforts to maintain and restore buffering as an ecosystem function may help adaptation to climate change, but this require quantification of effectiveness in their specific social-ecological context. However, the specific role of forests, trees, soil and drainage pathways in flow buffering, given geology, land form and climate, remains controversial. When complementing the scarce heavily instrumented catchments with reliable long-term data, especially in the tropics, there is a need for metrics for data-sparse conditions. We present and discuss a flow persistence metric that relates transmission to river flow of peak rainfall events to the base-flow component of the water balance. The dimensionless flow persistence parameter Fp is defined in a recursive flow model and can be estimated from limited time series of observed daily flow, without requiring knowledge of spatially distributed rainfall upstream. The Fp metric (or its change over time from what appears to be the local norm) matches local knowledge concepts. Inter-annual variation in the Fp metric in sample watersheds correlates with variation in the "flashiness index" used in existing watershed health monitoring programmes, but the relationship between these metrics varies with context. Inter-annual variation in Fp also correlates with common base-flow indicators, but again in a way that varies between watersheds. Further exploration of the responsiveness of Fp in watersheds with different characteristics to the interaction of land cover and the specific realisation of space-time patterns of rainfall in a limited observation period is needed to evaluate interpretation of Fp as an indicator of anthropogenic changes in watershed conditions. © Author(s) 2017. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/79182
Appears in Collections: 气候变化事实与影响
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作者单位: World Agroforestry Centre, Bogor, Indonesia; Plant Production System, Wageningen University, Wageningen, Netherlands
Recommended Citation:
Van Noordwijk M,, Tanika L,, Lusiana B. Flood risk reduction and flow buffering as ecosystem services - Part 1: Theory on flow persistence, flashiness and base flow[J]. Hydrology and Earth System Sciences,2017-01-01,21(5)