CN212544757U

CN212544757U - Experimental device for influence of external light on growth of submerged plants in water body

Info

Publication number: CN212544757U
Application number: CN202020705561.2U
Authority: CN
Inventors: 胡洋; 鲁艳; 卢汉雄; 邵克强; 汤祥明; 孙小州; 高光
Original assignee: Nanjing Institute of Geography and Limnology of CAS
Current assignee: Nanjing Institute of Geography and Limnology of CAS
Priority date: 2020-04-30
Filing date: 2020-04-30
Publication date: 2021-02-19
Anticipated expiration: 2030-04-30

Abstract

The utility model discloses an experimental device for the influence of external light on the growth of submerged plants in a water body in the field of ecological restoration, which comprises a cement pond and a light supplementing device, bottom mud is laid at the bottom of an inner cavity of the cement pond, the submerged plant is planted on the bottom mud, the light supplementing device comprises a lampshade, a lampshade fixing rod is fixed at the top of the lampshade, one end of a traction rope is connected onto the lampshade fixing rod, the other end of the traction rope is connected with an electric pulley module, a plurality of LED lamp beads are uniformly distributed on the inner wall of the lampshade, a light intensity sensing module and a light quality sensing module are arranged at the bottom of an inner cavity of the lampshade, a lampshade wire pipe is vertically fixed inside the lampshade, an automatic cleaning device is arranged outside the lampshade, and the light supplementing device is expected to be in a water body with high suspended matter concentration and low transparency, the probability of colonization of the aquatic plants is increased, the growth process of the aquatic plants is promoted, and technical support is provided for lake ecological restoration.

Description

Experimental device for influence of external light on growth of submerged plants in water body

Technical Field

The utility model relates to an ecological remediation technical field specifically is exogenous light is to the experimental apparatus of submerged plant growth influence in the water.

Background

The lake ecosystem is a combination of the non-biological environment and aquatic organisms in a certain time and space. The lake ecosystem has various functions, such as regulation and storage, improvement of water quality, provision of habitat for animals, adjustment of local climate, provision of drinking water and food for human beings, and the like. Due to the rapid development of society and economy, the interference or stress borne by the lake ecosystem as the final sewage containing unit of the basin is increased year by year, so that the composition and the structure of the lake ecosystem are remarkably changed. Along with the discharge of a large amount of industrial and agricultural sewage into lakes, the eutrophication processes of different degrees appear in lake ecosystems in different areas of China. In particular, in recent years, the aquatic plant community has been reduced on a large scale, and the coverage has been sharply reduced. More serious, some lakes suddenly change from a clear water state to a turbid water state, and the aquatic plants completely disappear. The evidence at home and abroad shows that: the existence and diversity of aquatic plants have important significance on the functional integrity and landscape value of the lake ecosystem and even the safety of the people in the watershed. Therefore, how to recover the aquatic plants in the lake ecosystem is the primary task for controlling the lake.

The cyanobacterial bloom caused by lake eutrophication greatly increases the attenuation rate of natural light in water, so that aquatic plants, especially submerged plants, can not carry out effective photosynthesis. This is also the main reason why the aquatic plants in the lake ecosystem disappear at present. Therefore, illumination is a key limiting factor for the recovery of submerged vegetation in eutrophic water.

Based on this, the utility model designs an experimental apparatus and experimental method of external light to submerged plant growth influence in eutrophic water, expect in the water that suspended solid concentration is high, the transparency is low, increase aquatic plant's colonization probability, promote aquatic plant's growth process, provide technical support for lake ecological remediation. The penetration ability of light with different wavelengths in a water body is different, different influences may be generated on different submerged plants and different growth stages of the submerged plants, but how large the influence is, whether an underwater light environment can be improved by using a special light source light supplementing mode, whether the influence range, the influence cost and the like are feasible or not are not clear at present.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an experimental apparatus of external light to submerged plant growth influence in water to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: an experimental device and an experimental method for the influence of external light on the growth of submerged plants in a water body are provided, the experimental device comprises a cement pond and a light supplementing device, bottom mud is laid at the bottom of an inner cavity of the cement pond, submerged plants are planted on the bottom mud, the light supplementing device comprises a lampshade, a lampshade fixing rod is fixed at the top of the lampshade, the lampshade fixing rod is connected with one end of a traction rope, the other end of the traction rope is connected with the electric pulley module, a plurality of LED lamp beads are uniformly distributed on the inner wall of the lampshade, a light intensity sensing module and a light quality sensing module are arranged at the bottom of the inner cavity of the lampshade, a lampshade wire tube is vertically fixed in the lampshade, an automatic cleaning device is arranged outside the lampshade, the light intensity sensing module and the light quality sensing module are connected with an external comprehensive control module through a data transmission cable, the LED lamp beads, the electric pulley module and the automatic cleaning device are connected with an external power supply through the comprehensive control module.

Preferably, the data transmission cable penetrates through the inside of the lampshade conduit tube.

Preferably, self-cleaning device includes lead screw, optical axis, motor and wash rack, the vertical symmetry of lead screw and optical axis sets up the both sides at the lamp shade, the motor is installed at the top of lamp shade, the output of motor is connected with the top of lead screw through the bearing, the outside at the lamp shade is established to the wash rack cover, threaded hole and through-hole are opened to the surperficial both sides of wash rack, lead screw and optical axis run through respectively in the inside of threaded hole and through-hole.

Preferably, the wash rack is the annular shape, the inside wall of wash rack is equipped with the brush hair of laminating mutually with the lamp shade outer wall.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses anticipating in the water that suspended solid concentration is high, the transparency is low, increasing aquatic plant's colonization probability, promoting aquatic plant's growth process, provide technical support for lake ecological remediation.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of the experimental apparatus of the present invention;

FIG. 2 is a drawing of the lampshade cleaning mechanism of the present invention;

fig. 3 is a data diagram of the experiment of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a lamp shade; 2. a lampshade fixing rod; 3. an electric pulley module; 4. LED lamp beads; 5. a lampshade spool; 6. a cleaning frame; 61. a threaded hole; 62. a through hole; 7. a light-quality sensing module; 8. a light intensity sensing module; 9. a data transmission cable; 10. a comprehensive control module; 11. a screw rod; 12. an optical axis; 13. an electric motor.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Example 1

Referring to fig. 1 and fig. 2, the present invention provides a technical solution: the experimental device for the influence of the external light on the growth of the submerged plants in the water body comprises a cement pond and a light supplementing device, bottom mud is laid at the bottom of an inner cavity of the cement pond, and the submerged plants are planted on the bottom mud.

The light supplementing device comprises a lampshade 1, a lampshade fixing rod 2 is fixed at the top of the lampshade 1, one end of a traction rope is connected onto the lampshade fixing rod 2, the other end of the traction rope is connected with an electric pulley module 3, the electric pulley module 3 serves as power to adjust the depth of the lampshade 1 in a water body, the colonization and growth of aquatic plants in a water environment with low transparency can be met, and after the length of the aquatic plants reaches the depth of a true light layer, LED lamps can be withdrawn and recovered, so that the lake ecological restoration cost is reduced.

A plurality of LED lamp beads 4 are uniformly distributed on the inner wall of the lampshade 1, and a light quality sensing module 7 and a light intensity sensing module 8 are arranged at the bottom of an inner cavity of the lampshade 1. According to the earlier stage experiment result, when the illumination intensity of the LED lamp is 5000lux, the growth and the reproduction speed of the aquatic plant are fastest. Therefore, the illumination intensity of the LED lamp is manually adjusted to reach 5000lux through the light intensity sensing device; the LED lamp beads 4 emit light rays with different wavelengths, and the wavelength data are transmitted to the comprehensive control module 10 through the data transmission cable 9 through the light quality sensing module 7. The wavelength data is then manually set or altered to ensure that the aquatic plant receives radiation of the optimum wavelength at different stages of growth.

The vertical lamp shade spool 5 that is fixed with in inside of lamp shade 1, the outside of lamp shade 1 is equipped with self-cleaning device, and through the self-cleaning device that the surface set up, the outer wall attachment to lamp shade 1 of unscheduled cleans, prevents that the attached living beings from growing in a large number and breeding on lamp shade 1 surface to can improve the radiant efficiency of LED lamp, increase the life of LED lamp.

The light quality sensing module 7 and the light intensity sensing module 8 are connected with an external comprehensive control module 10 through a data transmission cable 9, and the LED lamp beads 4, the electric pulley module 3 and the automatic cleaning device are connected with an external power supply through the comprehensive control module 10.

The data transmission cable 9 is inserted into the lampshade conduit 5.

The model of the Light intensity sensing module adopts TSL2540 Ambient Light Sensor, the model of the Light quality sensing module adopts TCS3400 Color Sensor, and the model of the data transmission cable adopts COLANSENSOR 500.

Wherein, self-cleaning device includes lead screw 11, optical axis 12, motor 13 and wash rack 6, the vertical symmetry of lead screw 11 and optical axis 12 sets up the both sides at lamp shade 1, motor 13 is installed at the top of lamp shade 1, the output of motor 13 is connected with the top of lead screw 11 through the bearing, the outside at lamp shade 1 is established to 6 covers of wash rack, threaded hole 61 and through-hole 62 are opened to the surperficial both sides of wash rack 6, lead screw 11 and optical axis 12 run through respectively in the inside of threaded hole 61 and through-hole 62, wash rack 6 is the annular shape, the inside wall of wash rack 6 is equipped with the brush hair of laminating mutually with 1 outer walls of lamp. The motor 13 can be controlled by the integrated control module 10 to work, and the motor 13 can move up and down on the outer part of the lampshade 1 with the point cleaning frame 6 through the screw rod 11 and the optical axis 12, so that the outer part of the lampshade 1 can be cleaned.

Example 2

The experimental method for the influence of the exogenous light on the growth of the submerged plants in the water body is carried out in a cement pond of a Taihu lake station and comprises the following steps:

s1: arranging 6 cement ponds for experiments, and paving bottom mud at the bottom of an inner cavity of each cement pond;

s2: setting 2 comparison groups, planting submerged plants in a cement pond, and adopting natural light and dark conditions as the comparison groups to discriminate the influence of different light supplementing light sources;

s3: the other 4 are used as treatment groups, and the upper parts of the cement pools of the treatment groups are shielded to create a lightless environment;

s4: the same submerged plants are planted in the cement pond of the treatment group, and then light supplement experiments are carried out through 4 different light supplement devices. And (3) determining the growth state and community change of the submerged plants, such as: chlorophyll fluorescence, plant morphology and physiological and biochemical indexes (such as plant length, root length, biomass and the like), coverage and the like;

among them, submerged plants include but are not limited to: herba Sonchi Oleracei, herba potamogeti, curly pondweed, and waterweed.

The LED lamp beads 4 in the light supplement device are set to have the wavelength of 390-780nm at the initial stage of aquatic plant colonization, and set to have the wavelength of 450-465nm and the wavelength of 615-650nm at the stage of aquatic plant growth.

The illumination intensity of the LED lamp beads 4 in the light supplement device is kept at 5000 lux.

Through the utility model relates to a, aquatic plant still can normal growth under the not enough condition of natural light, and blade area, girth and length all have showing the increase, and especially length increases to 60 centimetres from 15 centimetres. In addition, the number of plants in the hydrophyte population increased from 16 to 52, as shown in the data chart of the experiment shown in fig. 2.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. Experimental device of external light to submerged plant growth influence in water, its characterized in that: the experimental device comprises a cement pond and a light supplementing device, bottom mud is laid at the bottom of an inner cavity of the cement pond, submerged plants are planted on the bottom mud, the light supplementing device comprises a lampshade, a lampshade fixing rod is fixed at the top of the lampshade, the lampshade fixing rod is connected with one end of a traction rope, the other end of the traction rope is connected with the electric pulley module, a plurality of LED lamp beads are uniformly distributed on the inner wall of the lampshade, a light intensity sensing module and a light quality sensing module are arranged at the bottom of the inner cavity of the lampshade, a lampshade wire tube is vertically fixed in the lampshade, an automatic cleaning device is arranged outside the lampshade, the light intensity sensing module and the light quality sensing module are connected with an external comprehensive control module through a data transmission cable, the LED lamp beads, the electric pulley module and the automatic cleaning device are connected with an external power supply through the comprehensive control module.

2. The experimental facility for testing the influence of the exogenous light on the growth of the submerged plants in the water body according to claim 1, wherein: the data transmission cable penetrates through the inner part of the lampshade wire tube.

3. The experimental facility for testing the influence of the exogenous light on the growth of the submerged plants in the water body according to claim 1, wherein: the automatic cleaning device comprises a screw rod, an optical axis, a motor and a cleaning frame, the screw rod and the optical axis are symmetrically arranged on two sides of the lampshade vertically, the motor is installed at the top of the lampshade, the output end of the motor is connected with the top end of the screw rod through a bearing, the cleaning frame is sleeved outside the lampshade, threaded holes and through holes are formed in two sides of the surface of the cleaning frame, and the screw rod and the optical axis penetrate through the inner portions of the threaded holes and the through holes respectively.

4. The experimental facility for testing the influence of the exogenous light on the growth of the submerged plants in the water body according to claim 3, wherein: the wash rack is the annular shape, the inside wall of wash rack is equipped with the brush hair of laminating mutually with the lamp shade outer wall.