气候变化领域集成服务门户(CCPortal): Quantifying intra- and inter-annual dynamics of river-floodplain connectivity and wetland inundation with remote sensing and wavelet analysis

CCPortal

DOI	10.1002/hyp.15137
	Quantifying intra- and inter-annual dynamics of river-floodplain connectivity and wetland inundation with remote sensing and wavelet analysis
	Zheng, Hanwu; Tetzlaff, Doerthe; Freymueller, Jonas; Chmieleski, Jana; Okujeni, Akpona; Soulsby, Chris
发表日期	2024
ISSN	0885-6087
EISSN	1099-1085
起始页码	38
结束页码	4
卷号	38 期号:4
英文摘要	We used imagery from remote sensing (FORCE Time Series Analysis submodule (combining Landsat and Sentinel-2 imagery) to derive spatially distributed times series (8 years) of NDWI data to infer patterns of floodplain inundation and river-floodplain connectivity in two contrasting polders in the Lower Oder Valley National Park. The upstream Polder A (14.4 km2) was extensively flooded for prolonged periods most winters. Wavelet analysis showed that this strong seasonality was primarily driven by winter water levels in the river Oder that could enter and leave the polder through two opened floodgates. Subsequent drainage was slow and aided by a pumping station. Inundation of the downstream Polder 10 (17.7km2) was lower and had less marked seasonality. This reflected the impact of flood attenuation by storage in Polder A upstream, but also the greater connectivity (via 10 floodgates) to the Oder and a functional network of channels, which facilitated rapid drainage after flood peaks. In Polder A, secondary periods of transient inundation could also occur in response to local intense summer rainfall. Wavelet analysis also showed that groundwater recharge in and around Polder A is primarily induced by floodwater, whilst Polder 10 also reflects the influence of local rainfall-driven recharge. The flood regimes of the two polders showed marked inter-annual variation, largely dependent on flows from the upper Oder catchment. Understanding these patterns and processes of inundation is important for both managing flows and sustaining valuable wetland habitats within the National Park. Given projected climate change in eastern Europe and possible management alterations to the flow regime of the Oder, the potential implications for these habitats needs urgent attention. Remote sensing products could be reliably used to derive spatially distributed time series of NDWI to map intra and interannual patterns of inundation of the floodplain of the River Oder. Wavelet analysis showed that inundation was strongly seasonal and primarily driven by the winter flood regime of the River Oder, though modulated by the contrasting management strategies of individual polders. Understanding controls on floodplain inundation provides an evidence base for management strategies for wetland conservation in the Lower Oder Valley National Park in the face of threats from climate change and river regulation. image
英文关键词	floodplain; Oder river; remote sensing; river-floodplain connectivity; wavelet analysis; wetlands
语种	英语
WOS研究方向	Water Resources
WOS类目	Water Resources
WOS记录号	WOS:001190838100001
来源期刊	HYDROLOGICAL PROCESSES
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/288547
作者单位	Leibniz Institut fur Gewasserokologie und Binnenfischerei (IGB); Humboldt University of Berlin; University of Aberdeen; Humboldt University of Berlin; Leibniz Institut fur Gewasserokologie und Binnenfischerei (IGB)
推荐引用方式 GB/T 7714	Zheng, Hanwu,Tetzlaff, Doerthe,Freymueller, Jonas,et al. Quantifying intra- and inter-annual dynamics of river-floodplain connectivity and wetland inundation with remote sensing and wavelet analysis[J],2024,38(4).
APA	Zheng, Hanwu,Tetzlaff, Doerthe,Freymueller, Jonas,Chmieleski, Jana,Okujeni, Akpona,&Soulsby, Chris.(2024).Quantifying intra- and inter-annual dynamics of river-floodplain connectivity and wetland inundation with remote sensing and wavelet analysis.HYDROLOGICAL PROCESSES,38(4).
MLA	Zheng, Hanwu,et al."Quantifying intra- and inter-annual dynamics of river-floodplain connectivity and wetland inundation with remote sensing and wavelet analysis".HYDROLOGICAL PROCESSES 38.4(2024).