00000cab a22000003a 4500 UP-99796217611290059 Buklod 20231008001408.0 a grb 001 u| ta 140602s xx d | ||r ||||| || DENG eng Yang, Tao Estimation of environmental flow requirements for the river ecosystem in the Haihe River Basin, China. pp. 699-707 The temporal and spatial environmental flow requirements (EFRs) for the river ecosystem of the Haihe River Basin were analyzed based mainly on the eco-functional regionalization of available water resources. The annual EFRs for the river ecosystem of the Haihe River Basin were 47.71 × 108 m3, which accounted for 18% of the average annual flow (263.9 × 108 m3). The EFRs for river reaches, wetlands, and estuaries were 22.67, 15.32 and 9.72 × 108 m3, respectively. Moreover, the EFRs for the river ecosystem during the wet (June to October), normal (April, May, November), and dry (December to March) periods were 29.99, 9.51 and 8.21 × 108 m3, respectively. Thus, toward a more integrated water resource allocation in the Haihe River Basin, the primary effort should focus on meeting the EFRs for river systems located in protected areas during the dry period. Environmental flow requirements. Haihe River Basin. River ecosystem. Water Science and Technology 67, 4 (2013). FO UPD DENG-II Article