Nanjing Hydraulic Research Institute

Tiesheng Guan

Qiuwen Chen

Yuqing Lin

Jianyun Zhang

Liuming Hu

Wei Jiang

Li Wang

Cheng Chen

Yong Gao

Lei Tang

Ranran Feng

Yuxin Zhang

Ruxia Qiao

Disclosed is a method for determining an ecological flow process and a water temperature process of habitat requirements throughout a life history of fish, the method performs a two-factor crossover experiment with different water temperatures and flow velocities for fish in different life history stages, makes fitting according to experimental data to obtain curved surfaces of two-factor interaction relationship between fish in the different life history stages, water temperature, flow velocity, and obtains suitable water temperatures and flow velocities for fish in the different life history stages according to the curved surfaces of two-factor interaction relationship, and then determines ecological flow process and water temperature process of habitat requirements throughout a life history of the fish.

Method for determining ecological flow process and water temperature process of habitat requirements of full life history of fish

A experimental device is specifically an annular water tank formed by a first arc-shaped water tank, a first special-shaped water tank, a second arc-shaped water tank and a second special-shaped water tank which are sequentially connected head to tail, and the outer perimeter is 70 m to 110 m, wherein the inner walls of both the first special-shaped water tank and the second special-shaped water tank are flat, both of the widths between the outer walls and the inner walls are gradually increased from the two ends to the middle, and water flow pushing equipment which are capable of enabling the maximum water flow velocity in the experimental device to reach a preset value are respectively placed in the first special-shaped water tank and the second special-shaped water tank.

Experimental device and experimental method for studying quantitative relationship between spawning of parent fish and stimulation of flow velocity

A method for controlling the gate based on the habitat requirement for fish overwintering in rivers. According to the characteristics of biological habitat of the river and the habitat demand of fishes during overwintering, the method specifically comprises the steps of: firstly, determining candidate fishes for ecological flow calculation though fish resources investigating and historical data, and then screening out the target fish by adopting hierarchical analysis method; Secondly, establishing a quantitative response relationship curve between target fish physiological adaptions and water temperature, obtaining ecological water level which ensures the target fish overwintering safely according to the vertical temperature distribution, and establishing the relation between water depth and discharge using hydrodynamic model; finally, setting up a gate control system including a radar water level meter in the overwintering areas and an ecological water level management system in a gate control room.

Method for controlling the gate based on the habitat requirement for fish overwintering in rives

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Nanjing, China

Tiesheng Guan