Study on Ecological Water Demand Evaluation of Typical Mountainous Rivers in Zhejiang Province—Taking Kaihua River as an Example

2018 3rd International Conference on Environmental Engineering and Sustainable Development

生态环境科学

Xu, Kaiping^1 ; You, Aiju^1 ; Hua, Lei^1 ; Yonghong, Lu^2 ; Jin, Qiannan^1

Zhejiang Institute of Hydraulics and Estuary, Hangzhou, China^1

Kaihua County Water Conservancy Bureau, Kaihua, China^2

关键词: Current situation evaluations;    Ecological water demand;    Existing problems;    Instream flows;    Lake wetlands;    Level of satisfaction;    Water demand;    Zhejiang Province;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/264/1/012017/pdf
DOI  :  10.1088/1755-1315/264/1/012017

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

In view of the ecological environental problems and protection needs of mountainous rivers in Zhejiang province, a suitable ecological water demand evaluation system was established based on investigation and monitoring. Taking the Kaihua river as an example, the research on ecological water demand and the current situation evaluation were carried out. The main types of ecological water demand in Majin River are ecological basic flow and lake wetland outside the river, and instream flow and water demands for water quality in Zhongcun river. In the wet season each ecological water demand is 18.05m3/s and 2.56m3/s, and in the dry season is 3.00m3/s and 0.61m3/s. Three indexes of flow, duration and occurrence time are used to evaluate the ecological water demand. The degree of ecological water demand in the past three years is low level of satisfaction. Meanwhile the existing problems are analyzed, put forward reasonable measure and suggestions.