An indoor artificial stream device and method for simulating a stream ecosystem

An ecosystem and flow system technology, applied in the fields of ecology and environmental science, can solve problems such as poor operability, insufficient research systems, and many components, and achieve the effects of simple operation, expanded use range, and wide application

Active Publication Date: 2021-06-29
CHINESE RES ACAD OF ENVIRONMENTAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Artificial streams are an effective tool for ecological research, which overcomes the shortcomings of traditional field experiments such as many uncertain factors and poor repeatability, and can carry out related research without destroying the ecological environment of streams
[0004] In addition, various emerging pollutants (such as drugs and personal care products, microplastics, nanomaterials, gene toxins, etc.) are frequently detected in the water environment, seriously affecting the structure and function of aquatic ecosystems
Most of the traditional studies are exposure experiments on model animals of a certain trophic level, which cannot simulate the real environment well and accurately evaluate the impact of pollutants on the entire ecosystem
Patent application number 201910163367.8 discloses an artificial stream device for simulating environmental changes under field conditions, mainly to solve the problem of insufficient research systems for existing devices to simulate various environmental factors (temperature, flow rate, nutrients, etc.), but its composition Many parts, poor operability

Method used

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  • An indoor artificial stream device and method for simulating a stream ecosystem
  • An indoor artificial stream device and method for simulating a stream ecosystem
  • An indoor artificial stream device and method for simulating a stream ecosystem

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] The simulated artificial stream belongs to the mesocosmic scale ecosystem, and the purpose is to explore the effect of the psychoactive drug ketamine (also known as K powder) on the stream ecosystem. The outer dimension of the designed water tank is 170cm × 40cm × 16cm, and the size of the paddle blade is 13cm long × 14cm wide. Set a drug concentration (0.2 μg / L) close to the environmental exposure level in the actual environment and a blank control group, set 4 repetitions for each concentration, a total of 8 sinks, 8 sinks are randomly placed on the table, 4 It is a group, that is, one motor drives 4 paddles to rotate. Put 60L of dechlorinated tap water in each tank, the flow rate is controlled at 0.30m / s, and the fluorescent lamp is turned on and off by simulating the natural light and dark cycle. Before the start of the formal experiment, 6 landscape stones of known volume were placed in each tank, and the materials on the stones of the studied Jingmi Diversion Can...

Embodiment 2

[0076] This example is to explore the impact of the dam on the stream ecosystem. The size of the device is the same as above. The 8 water tanks are divided into two groups. One group of water tanks is inserted with a 5cm-high baffle to simulate the upstream and downstream of the dam barrier, and the other group is blank. For comparison, except for the presence or absence of baffles, other initial conditions are the same. The random placement of the water tanks, the operation of the artificial stream, and the data monitoring are the same as in Example 1. Observe the changes in the upstream and downstream biological communities of the stream and whether the dam has a respiration effect on the entire stream ecosystem. , photosynthesis, etc.

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Abstract

An indoor artificial stream device simulating a stream ecosystem: a back-shaped water tank with an open top, a solid part in the middle of the back-shaped water tank, and a depression in the middle of the solid part, which is used to place a nutrient adding device; The same number of stones collected from the stream to be studied are evenly placed in the water tank; a retractable steel structure support is installed directly above the return-shaped water tank, and fluorescent lamps, light control devices, and temperature and humidity monitors are installed on the steel structure support; The inner walls on both sides of the water tank are provided with several notch-shaped sockets; the motor is connected to the motor speed controller, and the paddle is fixed on the connecting shaft of the motor to form a circulating water flow in the return-shaped water tank; the return-shaped water tank is provided with water inlet and The water outlet, the water inlet and the water outlet are respectively connected to a water pump and a hose, and a screen is arranged at the connection between the hose and the water pump; a photometer is arranged on the indoor artificial stream device. The invention also discloses a method for conducting experiments with the device.

Description

technical field [0001] The invention belongs to the field of ecology and environmental science, and more specifically relates to an indoor artificial stream device for simulating stream ecosystems. [0002] The invention also relates to a method for carrying out experiments using the device described above. Background technique [0003] Artificial streams are an effective tool for ecological research, which overcomes the shortcomings of traditional field experiments such as many uncertain factors and poor repeatability, and can carry out related research without destroying the ecological environment of streams. [0004] In addition, various emerging pollutants (such as drugs and personal care products, microplastics, nanomaterials, gene toxins, etc.) are frequently detected in the water environment, seriously affecting the structure and function of aquatic ecosystems. Most of the traditional studies are exposure experiments on model animals of a certain trophic level, which...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02B1/02
CPCE02B1/02
Inventor 徐建郭昌胜金小伟张文萍陈力可张艳
Owner CHINESE RES ACAD OF ENVIRONMENTAL SCI
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