Journal article
Hydrological response in a highly urbanized watershed in China
Journal of water and climate change, Vol.13(5), pp.2171-2187
04/11/2022
DOI: 10.2166/wcc.2022.041
Abstract
Urbanization has a strong signal on the hydrologic cycle, leading to reduced infiltration and faster and larger runoff. However, the detailed analysis of the contribution of urbanization to different quantiles of discharge is still lacking; particularly, less is known in watersheds that have been experiencing such large and rapid urbanization as those in China. Here, we focus on the Wenyu watershed, a fast urbanizing basin located in the Beijing metropolitan area. Using a statistical attribution framework, we examine the hydrological response to the increasing urbanization across a wide range of discharge quantiles, from low to high flows; moreover, we perform analyses at the seasonal scale to capture differences in the physical processes at play during the year. Results indicate that the selected GAMLSS (generalized additive models for location, scale, and shape) models can capture well the variability in streamflow in this highly urbanized basin, with the average Spearman correlation coefficients between observations and the median of the fitted models of 0.84, 0.79, and 0.81 in spring, summer, and winter, respectively. Overall, urbanization played a different role for the different seasons and discharge quantiles. More specifically, we find its strongest impact to be in winter and spring, and for low and median quantiles. The role of precipitation is the strongest in summer, and it increases as we move toward the upper tail of the discharge distribution, especially above the 55th percentile, for which precipitation is selected as the only important predictor. Recycled water, on the other hand, tends to play a more dominant role in winter and spring.
Details
- Title: Subtitle
- Hydrological response in a highly urbanized watershed in China
- Creators
- Meifang Ren - China Acad Urban Planning & Design, Beijing 100044, Peoples R ChinaGabriele Villarini - Univ Iowa, IIHR Hydrosci & Engn, Iowa City, IA 52242 USABo Pang - Beijing Normal UniversityZongxue Xu - Beijing Normal UniversityLonggang Du - Beijing Hydrol Ctr, Beijing 100038, Peoples R ChinaYichen Wang - Beijing Hydrol Ctr, Beijing 100038, Peoples R China
- Resource Type
- Journal article
- Publication Details
- Journal of water and climate change, Vol.13(5), pp.2171-2187
- DOI
- 10.2166/wcc.2022.041
- ISSN
- 2040-2244
- eISSN
- 2408-9354
- Publisher
- Iwa Publishing
- Number of pages
- 17
- Grant note
- 51879008 / National Natural Science Foundation of China; National Natural Science Foundation of China (NSFC) 2017YFC1502701 / National Key R&D Program of China
- Language
- English
- Date published
- 04/11/2022
- Academic Unit
- Civil and Environmental Engineering; IIHR--Hydroscience and Engineering
- Record Identifier
- 9984244859302771
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