Quantitative assessment on basin-scale hydrological services of wetlands

作     者：Yanfeng WU Guangxin ZHANG Alain NROUSSEAU 

作者机构：Northeast Institute of Geography and AgroecologyChinese Academy of SciencesChangchun 130102China University of Chinese Academy of SciencesBeijing 100049China INRS-ETE/Institut National de la Recherche Scientifique-Eau Terre EnvironnementQuebec G1K 9A9Canada 

出 版 物：《Science China Earth Sciences》 (中国科学（地球科学英文版）)

年 卷 期：2020年第63卷第2期

页      面：279-291页

核心收录：

学科分类：08[工学] 081501[工学-水文学及水资源] 0815[工学-水利工程] 

基　　金：supported by the National Key R&D Program of China(Grant No.2017YFC0406003) the National Natural Science Foundation of China(Grant No.41877160) the Featured Institute Project4,the Northeast Institute of Geography and Agroecology,Chinese Academy of Sciences(Grant No.IGA-135-05) 

主　　题：Wetlands modules Hydrological processes simulation Baseflow support Quickflow mitigation Hydrological function 

摘      要：Despite recognizing the importance of hydrological function of wetlands, basin-scale wetlands services have rarely been investigated. The PHYSITEL/HYDROTEL modelling platform was used to quantitatively assess the impact of wetlands on quickflow and baseflow with paired simulation scenarios in Duobukuli River Basin, namely with wetlands and without *** results showed that wetlands exert significant impact on basin hydrological processes by decreasing streamflow and altering streamflow regime(magnitude, frequency, duration and time of flow events). The intensity(significant or not) of wetlands influences on quickflow had daily, monthly and annual variation. Wetlands significantly attenuated quickflow during flood season while slightly support daily, monthly and annual baseflow. The average quickflow attenuation and baseflow support of wetlands were 5.89% and 0.83%, respectively. Although the intensity and effect(mitigation or augment) of wetlands on streamflow temporally varied at daily, monthly, seasonal and annual scales, wetland overall mitigated quickflow and augment baseflow in Duobukuli River Basin. Our results could provide insights for future decision-making for rehabilitation and conservation of wetlands as well as integrated basin water resources management.