CN108267173A - A kind of meter formula moisture equilibrium field device certainly - Google Patents
A kind of meter formula moisture equilibrium field device certainly Download PDFInfo
- Publication number
- CN108267173A CN108267173A CN201810079494.5A CN201810079494A CN108267173A CN 108267173 A CN108267173 A CN 108267173A CN 201810079494 A CN201810079494 A CN 201810079494A CN 108267173 A CN108267173 A CN 108267173A
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- soil
- moisture equilibrium
- moisture
- equilibrium field
- seepage flow
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
Abstract
A kind of field device of meter formula moisture equilibrium certainly is mainly by moisture equilibrium field system, and water balance element monitoring system, data acquisition, transmission, processing system three parts form.The moisture equilibrium field of natural environment can be represented by establishing, and assemble the monitoring technology and method of the balanced each element of existing moisture, data collector(17)Acquisition and temporary tipping bucket flow sensor(10)And soil humidity sensor(23)Monitoring data, JPRS radio transmission apparatus(18)By wireless network by data collector(17)The data transmission of acquisition is to terminal computer, and terminal receives and data processing software(19)Function be reception, storage, editor and analysis data.Comprehensive, continuous, automatic positioning monitoring is carried out to each element, realize it is unattended automation.
Description
Technical field:
Patent of the present invention is related to a kind of unattended ecological location observational study station long term monitoring ecosystem water input and branch
Go out equilibrium relation, be mainly used for accurately determining evapotranspiration, and energy continuous observation, the section of self registering Eco-environment Factors monitoring
Grind facility.
Background technology:
Each factor of water balance of the ecosystem is the important content of ECOLOGICAL ENVIRONMENTAL MONITORING, its concentrated expression energy of ecological environment
Amount balance and Water Cycle process even more calculate the important evidence of Forestland evapotranspiration amount and transpiration amount.Water in use at present
Balanced field is divided mostly periodically or non-periodically to be monitored to partial moisture balance factor using portable instrument and equipment, it is impossible to meet
The demand of unattended ecological location observational study station long term monitoring.With many ecological monitoring instruments of progress of science and technology
Realize automation, in addition the continuous expansion of wireless communication networks covering surface, for complex art integrated innovation build from meter formula,
Data wireless transmission moisture equilibrium field provides possibility.
Invention content:
The present invention is in order to reach more than target, and it is concise, easy to operate to devise a kind of structure, automatic to record, METHOD FOR CONTINUOUS DETERMINATION, data
Wireless transmission, the meter formula moisture equilibrium field certainly of each element of long-term tillage monitoring objective ecological environment water balance.
In order to achieve the above objectives, the technical scheme is that being realized by following measures:
A kind of field device of meter formula moisture equilibrium certainly is mainly by moisture equilibrium field system, and water balance element monitors system, and data are adopted
Collection, transmission, processing system three parts composition.
Moisture equilibrium field device system with lower component by being formed:Moisture equilibrium field(1);Underground test cabinet(2 );Pipe alley
(3);To test chamber cap(4);For skylight(5);For pipeline operculum colpi(6);For ladder(7);For divider wall(8);It is defeated for upstream runoff
Enter section(9);For undisturbed soil(15);For horizon d(16).
It is a kind of to monitor system by being formed with lower component from meter formula moisture equilibrium field device water balance element:Tipping bucket flow passes
Sensor(10);Soil infiltration collector(11);Seepage flow efferent duct(12);Linear reservoir pipe(13);Soil water measurement hole(14);
Soil humidity sensor (23).
A kind of data from meter formula moisture equilibrium field device are acquired, are transmitted, processing system with lower component by being formed:Data are adopted
Storage(17);JPRS radio transmission apparatus(18);Terminal receives and data processing software(19);Data collector
(17)Acquisition and temporary tipping bucket flow sensor(10)And soil humidity sensor(23)Monitoring data, JPRS wireless transmission
Equipment(18)By wireless network by data collector(17)To terminal computer, terminal receives the data transmission of acquisition
And data processing software(19)Function be reception, storage, editor and analysis data.
A kind of divider wall from meter formula moisture equilibrium field device(8)For moisture equilibrium field(1), underground test cabinet(2 )And pipe
Road ditch(3)Boundary wall, wall is water-tight structure, prevents the mutual string of rainwash and soil infiltration inside and outside moisture equilibrium field
It is logical;Divider wall(8)Setting depth reach fluid-tight horizon d(16), and it is in sealing contact with horizon d, soil infiltration is avoided to hang down
Straight movement, makes the soil water oozed under deep layer escape out moisture equilibrium field system;Divider wall upper edge needs to be higher by earth's surface 10-20cm.
Underground test cabinet 2 is arranged on moisture equilibrium and swims space for the equipment that installs instruments, pipe alley off field(3)It is arranged on moisture equilibrium field
Side is the channel for installing seepage flow efferent duct, and the two forms " L " type space.
A kind of underground test cabinet from meter formula moisture equilibrium field device(2 )Add test chamber cap(4), test chamber cap(4)Kaitian
Window(5), skylight(5)Lower installation ladder(7), so that Observation personnel comes in and goes out;Pipe alley(3)Add pipeline operculum colpi(6), test chamber cap
(4)With pipeline operculum colpi(6)Upper backfill earth is high together to original ground, and replys original vegetation;Upstream runoff inputs section(9)It is
In moisture equilibrium field(1)Upstream divider wall on reserve perforation and incise, it is equal with sloping floor to incise bottom, guarantee upstream earth's surface
Runoff enters moisture equilibrium field by reset condition.
A kind of water balance element from meter formula moisture equilibrium field device monitors system by tipping bucket flow sensor(10), soil
Earth seepage flow collector(11), seepage flow efferent duct(12), linear reservoir pipe(13), soil water measurement hole(14)It is passed with soil moisture
Sensor(23)Composition, the system for monitoring instrument and monitoring affiliated facility, soil infiltration collector(11)Function be by one
The sample of vertical seepage flow in area acquisition soil horizon is determined, by seepage flow collecting tank(20), oblique centrum(21)It is formed with discharge outlet, seepage flow
Collecting tank(20)Act to collect seepage flow, structure is the channel-shaped body of Cross-Section Rectangular, and the oral area of slot is for blade-like to ensure seepage flow
Receiving area it is accurate;Seepage flow collecting tank(20)Apex weld oblique centrum(21), oblique centrum, which rises, enters original state soil layer reduction resistance
The effect of power;Seepage flow collecting tank(20)End bottom among set an internal thread discharge outlet(22), it is hollow that discharge outlet connects external screw thread
Screw rod, cored screw connect seepage flow efferent duct(12);Seepage flow efferent duct(12)Play a part of to guide soil infiltration, what is finally generated oozes
Stream guides to tipping bucket flow sensor(10).
This moisture equilibrium field device devises 5 seepage flow collectors, wherein 2 are mounted on moisture equilibrium field downstream base portion
Original state soil layer(15)With horizon d(16)Interface on, collect the soil water under milliosmolarity, 3 are horizontally arranged at moisture equilibrium field(1)
The original state soil layer of side different depth(15)It is interior, for measuring depth is oozed under soil infiltration speed and precipitation;Linear reservoir pipe
(13)Mounted on moisture equilibrium field(1)Downstream divider wall(8)Middle part, nozzle the widest part 1 ground of field balanced with moisture is concordant, diameter
Flow efferent duct(13)Collar extension and tipping bucket flow sensor(10)Connection, for collecting and measuring moisture equilibrium field(1)It generates
Run-off.
Soil water measurement hole (14) is to monitor moisture equilibrium field(1)Interior original state soil layer(15)The space-time of moisture
Change and set, hole count 2, positioned at moisture equilibrium field(1)On the trisection point of longitudinal axis, depth reaches horizon d(16), it is interior
Portion's soil humidity sensor(23), the soil moisture contents of arbitrary levels, soil humidity sensor can be measured(23)Data transmission
To data collector (17).
Tipping bucket flow sensor(10)For measuring seepage flow efferent duct and linear reservoir pipe discharge moisture, while measure discharge
Time.
It is generally built in the slope surface of the ecosystem to be measured from meter formula moisture equilibrium field, due to the research pair of moisture equilibrium field
Not disturbed soil and natural vegetation system are liked, moisture equilibrium field is not generally possible to set fluid-tight bottom, so for standard
Really control moisture movement direction and quantity, addressing is built in moisture equilibrium field will be on impermeable rock stratum.According to the countries concerned and row
Industry standard, the width of moisture equilibrium field is 5 meters (being parallel to contour), and floor projection length is 20 meters(Perpendicular to contour).
The water input factor of moisture equilibrium field includes annual precipitation in its natural state(Live part is through-fall in woods), upstream
Rainwash increment and effective atmosphere condensing capacity(Refer to soil condensate);The water output factor of moisture equilibrium field is mainly
Rainwash output quantity, soil infiltration output quantity, soil moisture storage capacity and evapotranspiration(Evaporation adds transpiration amount).
Patent design of the present invention can be achieved from meter formula moisture equilibrium field, and most of moisture balance element is continuously surveyed(Except being difficult to measure
Evapotranspiration outside), evapotranspiration can be calculated by system moisture balance between revenue and expenditure principle and be obtained, and can be studied moisture equilibrium and respectively
The spatiotemporal motion rule of element.
Description of the drawings:
Fig. 1 is " meter formula moisture equilibrium field certainly " structure principle chart designed by the present invention.
Fig. 2 is " soil infiltration collector " structure chart designed by the present invention.
Fig. 3 is " to transmit " schematic diagram designed by the present invention from meter formula moisture equilibrium field data acquisition
In figure:1st, 2,3,4,5,6,7,8,9,15,16 be moisture equilibrium field system, wherein 1- moisture equilibrium field;2-underground is tested
Room;3- pipe alleies;4- is test chamber cap;5- is skylight;6- is pipeline operculum colpi;7- is ladder;8- is divider wall;9- is upper trails
Stream input section;15- is undisturbed soil;16- is horizon d.10th, 11,12,13,14,23 system is monitored for water balance element,
Middle 10- tipping buckets flow sensor;11- soil infiltration collectors;12- seepage flow efferent ducts;13- linear reservoir pipes;14- soil moisture
Measure hole;23- soil humidity sensors.17th, 18,19 be data acquisition, transmission, wherein processing system, 17- data collectors;
18- JPRS radio transmission apparatus;19- terminals receive and data processing software.
Specific embodiment:
Below in conjunction with the accompanying drawings and specific embodiment, the present invention is described in further detail.
The key measures for realizing the present invention are to establish the semi open model water that can represent ecosystem natural environment to be measured
Point balanced field, novelty assemble the monitoring technology and method of the balanced each element of existing moisture, each element is carried out it is comprehensive, continuous,
Automatic positioning monitoring, realize it is unattended automation.
Moisture equilibrium field device system with lower component by being formed:Moisture equilibrium field(1);Underground test cabinet(2 );Pipe alley
(3);To test chamber cap(4);For skylight(5);For pipeline operculum colpi(6);For ladder(7);For divider wall(8);It is defeated for upstream runoff
Enter section(9);For undisturbed soil(15);For horizon d(16).
Moisture equilibrium field 1 defines observational study space, and the research object included in this space is the primary plant of ground
Quilt and original state soil layer(15)And it is coated with the air of aboveground vegetation, wherein original state soil layer(15)For when building moisture equilibrium field not
Disturbed original soil layer, at the same also ensure on it raw vegetation keep primordial condition.Divider wall(8)For moisture equilibrium field
(1), underground test cabinet(2 )And pipe alley(3)Boundary wall, wall is water-tight structure, prevents earth's surface inside and outside moisture equilibrium field
Runoff and soil infiltration are mutually ganged up.Divider wall(8)Setting depth reach fluid-tight horizon d(16), and it is close with horizon d
Sealing-in is touched, and soil infiltration is avoided to move vertically, and the soil water oozed under deep layer is made to escape out moisture equilibrium field system;Divider wall upper edge
It needs to be higher by earth's surface 10-20cm.Underground test cabinet(2 )It is arranged on moisture equilibrium and swims space for the equipment that installs instruments off field, pipe
Road ditch(3)It is the channel for installing seepage flow efferent duct to be arranged on moisture equilibrium field side, and the two forms " L " type space;Underground is tested
Room(2 )Add test chamber cap(4), test chamber cap(4)It puts in a skylight(5), skylight(5)Lower installation ladder(7), so that Observation personnel goes out
Enter;Pipe alley(3)Add pipeline operculum colpi(6), test chamber cap(4)With pipeline operculum colpi(6)Upper backfill earth is high together to original ground, and
Reply original vegetation.Upstream runoff inputs section(9)It is in moisture equilibrium field(1)Upstream divider wall on reserve perforation incise,
It is equal with sloping floor to incise bottom, ensures that upstream rainwash enters moisture equilibrium field by reset condition(1).Water balance will
Plain monitoring system is by tipping bucket flow sensor(10), soil infiltration collector(11), seepage flow efferent duct(12), linear reservoir pipe
(13), soil water measurement hole(14)And soil humidity sensor(23)Composition.The system is monitoring instrument and monitors attached
Facility.Soil infiltration collector(11)Function be by the sample of vertical seepage flow in certain area acquisition soil horizon, received by seepage flow
Collect slot(20), oblique centrum(21)It is formed with discharge outlet.Seepage flow collecting tank(20)Play a part of to collect seepage flow, structure is Cross-Section Rectangular
Channel-shaped body, the oral area of slot is for blade-like to ensure that the receiving area of seepage flow is accurate;Seepage flow collecting tank(20)Apex welding it is oblique
Centrum(21), oblique centrum play a part of enter original state soil layer reduce resistance;Seepage flow collecting tank(20)End bottom among set one
Internal thread discharge outlet(22), discharge outlet connects external screw thread cored screw, and cored screw connects seepage flow efferent duct(12);Seepage flow efferent duct
(12)Play a part of to guide soil infiltration, the seepage flow finally generated guides to tipping bucket flow sensor(10).This moisture equilibrium field is set
5 seepage flow collectors are counted, wherein 2 original state soil layers for being mounted on moisture equilibrium field downstream base portion(15)With horizon d(16)'s
On interface, milliosmolarity under the soil water is collected, 3 are horizontally arranged at moisture equilibrium field(1)The original state soil layer of side different depth(15)
It is interior, for measuring depth is oozed under soil infiltration speed and precipitation.Linear reservoir pipe(13)Mounted on moisture equilibrium field(1)Downstream every
From wall(8)Middle part, nozzle the widest part field balanced with moisture(1)Ground is concordant, linear reservoir pipe(13)Collar extension and tipping bucket stream
Quantity sensor(10)Connection, for collecting and measuring moisture equilibrium field(1)The run-off of generation.Soil water measurement hole (14) is
In order to monitor moisture equilibrium field (1) interior original state soil layer(15)The change in time and space of moisture and set, hole count 2, positioned at water
Divide on the trisection point of balanced field (1) longitudinal axis, depth reaches horizon d(16), internal soil humidity sensor(23), can measure
The soil moisture content of arbitrary levels, soil humidity sensor(23)Data transmission to data collector (17).Tipping bucket flow passes
Sensor(10)For measuring seepage flow efferent duct and linear reservoir pipe discharge moisture, while measure the time of discharge.Data acquisition passes
Defeated, processing system is by data collector(17), JPRS radio transmission apparatus(18), terminal receive and data processing software
(19)Composition.Data collector(17)Acquisition and temporary tipping bucket flow sensor(10)And soil humidity sensor(23)Prison
Measured data, JPRS radio transmission apparatus(18)The data transmission that data collector 17 acquires to terminal is calculated by wireless network
Machine, terminal receives and data processing software(19)Function be reception, storage, editor and analysis data.
The water input factor determination of moisture equilibrium field device:1. annual precipitation is surveyed using nigh meteorological field is built
It is fixed;2. upstream rainwash increment is using the slope runoff field recognition built in moisture equilibrium field upstream;3. effective atmosphere coagulates
The amount of bearing water is determined using the humidity variation round the clock of no rainy day upper soll layer(Using soil humidity sensor data).
The water output factor determination of moisture equilibrium field device:1. rainwash output quantity uses the tipping bucket of linear reservoir pipe
Flow sensor data determine;2. soil infiltration output quantity is determined using the tipping bucket flow sensor data of seepage flow efferent duct;3.
Soil moisture storage capacity is determined using each level soil water content that soil humidity sensor measures;4. evapotranspiration uses moisture
Balanced field water household equilibrium principle calculates.
Claims (7)
1. by moisture equilibrium field system, system, number mainly are monitored by water balance element for a kind of field device of meter formula moisture equilibrium certainly
According to acquisition, transmission, processing system three parts composition, it is characterized in that:Moisture equilibrium field device system is by moisture equilibrium field(1)、
Underground test cabinet(2 ), pipe alley(3), for test chamber cap(4), be skylight(5), be pipeline operculum colpi(6), be ladder(7), be every
From wall(8), for upstream runoff input section(9), be undisturbed soil(15), be horizon d(16)Component forms;Water balance element
Monitoring system is by tipping bucket flow sensor(10), soil infiltration collector(11), seepage flow efferent duct(12), linear reservoir pipe
(13), soil water measurement hole(14), soil humidity sensor (23) component composition;Data acquisition, transmission, processing system are by counting
According to collector(17), JPRS radio transmission apparatus(18), terminal receive and data processing software(19)Component forms;Number
According to collector(17)Acquisition and temporary tipping bucket flow sensor(10)And soil humidity sensor(23)Monitoring data, JPRS
Radio transmission apparatus(18)By wireless network by data collector(17)The data transmission of acquisition is to terminal computer, computer
Terminal receives and data processing software(19)Function be reception, storage, editor and analysis data.
2. it is according to claim 1 a kind of from meter formula moisture equilibrium field device, it is characterized in that:Divider wall(8)It is equal for moisture
Heng Chang(1), underground test cabinet(2 )And pipe alley(3)Boundary wall, wall is water-tight structure, is prevented inside and outside moisture equilibrium field
Rainwash and soil infiltration are mutually ganged up;Divider wall(8)Setting depth reach fluid-tight horizon d(16), and and basement rock
Layer is in sealing contact, and soil infiltration is avoided to move vertically, the soil water oozed under deep layer is made to escape out moisture equilibrium field system;Divider wall
Upper edge needs to be higher by earth's surface 10-20cm;Underground test cabinet(2 )It is arranged on moisture equilibrium field(1)Downstream is the equipment that installs instruments
Space, pipe alley(3)It is arranged on moisture equilibrium field(1)Side is the channel for installing seepage flow efferent duct, and it is empty that the two forms " L " type
Between.
3. it is according to claim 1 a kind of from meter formula moisture equilibrium field device, it is characterized in that:The underground test cabinet(2 )
Add test chamber cap(4), test chamber cap(4)It puts in a skylight(5), skylight(5)Lower installation ladder(7), pipe alley(3)Add pipeline operculum colpi
(6), test chamber cap(4)With pipeline operculum colpi(6)Upper backfill earth is high together to original ground, and replys original vegetation;Upstream runoff
Input section(9)It is in moisture equilibrium field(1)Upstream divider wall on reserve perforation incise, incise bottom and sloping floor phase
It is flat, ensure that upstream rainwash enters moisture equilibrium field by reset condition(1).
4. it is according to claim 1 a kind of from meter formula moisture equilibrium field device, it is characterized in that:It is this balanced from meter formula moisture
The water balance element of field device monitors system by tipping bucket flow sensor(10), soil infiltration collector(11), seepage flow output
Pipe(12), linear reservoir pipe(13), soil water measurement hole(14)And soil humidity sensor(23)Composition, the system are monitoring
Instrument and the affiliated facility of monitoring, soil infiltration collector(11)Function be by certain area acquisition soil horizon in vertical seepage flow
Sample, by seepage flow collecting tank(20), oblique centrum(21)It is formed with discharge outlet, seepage flow collecting tank(20)Act the work for collecting seepage flow
With the channel-shaped body that, structure is Cross-Section Rectangular, the oral area of slot is for blade-like to ensure that the receiving area of seepage flow is accurate;Seepage flow collecting tank
(20)Apex weld oblique centrum(21), oblique centrum play a part of enter original state soil layer reduce resistance;Seepage flow collecting tank(20)'s
An internal thread discharge outlet is set among the bottom of end(22), discharge outlet connects external screw thread cored screw, and cored screw connects seepage flow efferent duct
(12);Seepage flow efferent duct(12)Play a part of to guide soil infiltration, the seepage flow finally generated guides to tipping bucket flow sensor(10).
5. it is according to claim 1 a kind of from meter formula moisture equilibrium field device, it is characterized in that:This moisture equilibrium field device is set
5 seepage flow collectors are counted, wherein 2 original state soil layers for being mounted on moisture equilibrium field downstream base portion(15)With horizon d(16)'s
On interface, milliosmolarity under the soil water, 3 original state soil layers for being horizontally arranged at 1 side different depth of moisture equilibrium field are collected(15)It is interior,
For measuring depth is oozed under soil infiltration speed and precipitation;Linear reservoir pipe(13)Mounted on moisture equilibrium field(1)Downstream is isolated
Wall(8)Middle part, nozzle the widest part field balanced with moisture(1)Ground is concordant, linear reservoir pipe(13)Collar extension and tipping bucket flow
Sensor(10)Connection, for collecting and measuring the run-off of moisture equilibrium field generation.
6. it is according to claim 1 a kind of from meter formula moisture equilibrium field device, it is characterized in that:Soil water measurement hole(14)
It is to monitor original state soil layer in moisture equilibrium field one(15)The change in time and space of moisture and set, hole count be two, position
In moisture equilibrium field(1)On the trisection point of longitudinal axis, depth reaches horizon d(16), internal soil humidity sensor(23), can
Measure the soil moisture content of arbitrary levels, soil humidity sensor(23)Data transmission to data collector (17).
7. it is according to claim 1 a kind of from meter formula moisture equilibrium field device, it is characterized in that:The tipping bucket flow sensing
Device(10)For measuring seepage flow efferent duct and linear reservoir pipe discharge moisture, while measure the time of discharge.
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CN201810079494.5A CN108267173A (en) | 2018-01-26 | 2018-01-26 | A kind of meter formula moisture equilibrium field device certainly |
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CN201810079494.5A CN108267173A (en) | 2018-01-26 | 2018-01-26 | A kind of meter formula moisture equilibrium field device certainly |
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FR2965057B1 (en) * | 2010-09-22 | 2013-04-05 | Inst Rech Developpement Ird | WATER TRANSFER STUDY SYSTEM IN A SOIL |
CN103308666A (en) * | 2013-07-04 | 2013-09-18 | 江西省水土保持科学研究院 | Water amount balance test device for slope land |
CN205483072U (en) * | 2016-03-25 | 2016-08-17 | 黄彬 | Soil erosion and water loss sediment charge automatic monitoring appearance |
CN205656323U (en) * | 2016-03-22 | 2016-10-19 | 湖南省林业科学院 | Automatic survey system of forest hydrology water yield |
CN106706475A (en) * | 2017-02-28 | 2017-05-24 | 水利部交通运输部国家能源局南京水利科学研究院 | In-situ rainfall infiltration and runoff distribution measuring system and method |
CN206223783U (en) * | 2016-07-11 | 2017-06-06 | 赵鹏武 | A kind of new sloping surface runoff field |
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2018
- 2018-01-26 CN CN201810079494.5A patent/CN108267173A/en active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2965057B1 (en) * | 2010-09-22 | 2013-04-05 | Inst Rech Developpement Ird | WATER TRANSFER STUDY SYSTEM IN A SOIL |
CN103308666A (en) * | 2013-07-04 | 2013-09-18 | 江西省水土保持科学研究院 | Water amount balance test device for slope land |
CN205656323U (en) * | 2016-03-22 | 2016-10-19 | 湖南省林业科学院 | Automatic survey system of forest hydrology water yield |
CN205483072U (en) * | 2016-03-25 | 2016-08-17 | 黄彬 | Soil erosion and water loss sediment charge automatic monitoring appearance |
CN206223783U (en) * | 2016-07-11 | 2017-06-06 | 赵鹏武 | A kind of new sloping surface runoff field |
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