CN102252750A - Method and instrument for measuring spatial distribution regularity of photosynthetically active radiation under tree crown - Google Patents
Method and instrument for measuring spatial distribution regularity of photosynthetically active radiation under tree crown Download PDFInfo
- Publication number
- CN102252750A CN102252750A CN2011101066002A CN201110106600A CN102252750A CN 102252750 A CN102252750 A CN 102252750A CN 2011101066002 A CN2011101066002 A CN 2011101066002A CN 201110106600 A CN201110106600 A CN 201110106600A CN 102252750 A CN102252750 A CN 102252750A
- Authority
- CN
- China
- Prior art keywords
- sensor
- active radiation
- photosynthetically active
- instrument
- standard
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000005855 radiation Effects 0.000 title claims abstract description 53
- 238000000034 method Methods 0.000 title claims abstract description 9
- 239000000523 sample Substances 0.000 claims abstract description 29
- 238000005259 measurement Methods 0.000 claims abstract description 6
- 238000000691 measurement method Methods 0.000 claims abstract 2
- 238000005070 sampling Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 3
- 238000003556 assay Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 239000004744 fabric Substances 0.000 description 3
- 230000008602 contraction Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
Images
Landscapes
- Measurement Of Radiation (AREA)
Abstract
本发明公开了一种树冠下光合有效辐射空间分布规律测定方法及仪器，该仪器的传感器基座可沿标准横梁移动，并通过螺栓安装在标准横梁上；传感器探头固定在传感器基座上；传感器基座上还固定有标示水平状态的水平气泡。其测定方法是在树干的任何方向设置安装光合有效辐射的标准横梁，在标准横梁上，以树干为中心、用同心圆的方式在各个方向的标准横梁上安装多个传感器探头，将各个探头用信号线连接在同一数据采集器上；通过标准横梁上的刻度精确调节各个传感器探头与树干的距离。本发明能实现对冠层下不同空间位置处的光合有效辐射强度的同时测定，测定方便快捷，对农林复合的空间配置及其防护林体系的立体配置等方面具有重要的实践应用价值。
The invention discloses a method and an instrument for measuring the spatial distribution of photosynthetically active radiation under a canopy. The sensor base of the instrument can move along a standard beam and is installed on the standard beam through bolts; the sensor probe is fixed on the sensor base; The base is also fixed with a horizontal bubble indicating a horizontal state. The measurement method is to install a standard beam of photosynthetically active radiation in any direction of the trunk, on the standard beam, with the trunk as the center, install multiple sensor probes on the standard beam in all directions in a concentric circle manner, and use each probe with The signal lines are connected to the same data collector; the distance between each sensor probe and the tree trunk can be precisely adjusted through the scale on the standard beam. The invention can realize the simultaneous measurement of the photosynthetically active radiation intensity at different spatial positions under the canopy, the measurement is convenient and fast, and has important practical application value for the spatial configuration of agroforestry and the three-dimensional configuration of the shelter forest system.
Description
Technical field
The present invention's industry meteorological observation concerning farmers Instrument technology field, photosynthetically active radiation space distribution rule assay method and instrument thereof under particularly a kind of tree crown.
Background technology
The study on spatial distribution laws that often needs to measure photosynthetically active radiation under the photosynthetically active radiation, particularly tree crown in the environment in the agricultural weather research work is in hysteretic state always.At present, the method for known mensuration photosynthetically active radiation and instrument thereof have two kinds, and a kind of is by single photosynthetically active radiation sensor, face the photosynthetically active radiation intensity of whole radiation field with a generation and measure; Another kind is the bar-shaped instrument that has a plurality of sensor probes, can measure the mean value of whole radiation field photosynthetically active radiation intensity but can not write down the photosynthetically active radiation intensity of each single-point, promptly for point whole radiation field photosynthetically active radiation intensity be measured and described with face.Above-mentioned two kinds of methods and instrument all can not be measured the space distribution rule of photosynthetically active radiation under the tree crown, and reason is: the photosynthetically active radiation under the tree crown exists very big Spatial Variability, and the strength detection of single-sensor is not enough to describe whole radiation field; And can only write down the mean value of radiation intensity with bar-shaped sensor, though represented the whole photosynthetically active radiation level under the tree crown, can not measure the spatial distribution state and the rule thereof of each point exactly with multiple spot radiation value average.In the research of ecosystem meteorology and semidefinite position, location observation process, particularly agroforestry research, require to measure the concrete Changing Pattern of the photosynthetically active radiation different spatial under tree crown under the tree crown through regular meeting.
Summary of the invention
The objective of the invention is deficiency at existing single photosynthetically active radiation sensor and bar-shaped many probe photosynthetically active radiation sensor determinations, photosynthetically active radiation space distribution rule assay method and instrument thereof under a kind of tree crown are provided, the space distribution rule that can not only reflect photosynthetically active radiation in the environment accurately, and swift and convenient to operate, time saving and energy saving.
Technical scheme of the present invention is:
The instrument that the photosynthetically active radiation space distribution rule is measured under a kind of tree crown, comprise that A-frame is characterized in that: described instrument also comprises sensor probe, sensor base, bolt and has the standard crossbeam of scale; Described sensor base can move along the standard crossbeam, and is installed on the standard crossbeam by bolt; Sensor probe is by being bolted on the sensor base; Described bolt has the effect of leveling sensor probe simultaneously; Also be fixed with the horizontal bubble that indicates horizontality on the sensor base.
Described bolt is by the reference level bubble, and leveling sensor makes it be in horizontality.
Described glide base bottom is the fluted body structure, and groove is fixed on the standard crossbeam.
The scale that described standard crossbeam is marked with to sensor on the standard crossbeam slip and carry out accurately mark apart from the trunk position.
Described standard crossbeam increases or reduces its quantity with the tree crown size, with the scope of expansion or contraction mensuration; Pass through the web member clamping between the described standard crossbeam.
Described bolt top is six prisms, and the middle part is smooth right cylinder, and cylinder diameter is identical with the circumcircle diameter of top six prisms, and the bottom is that diameter is greater than the cylindrical conveyor screw in middle part; Top six prisms play auxiliary leveling effect, and the middle part right cylinder is used to place sensor base, and the conveyor screw of lower cylindrical body is used for fixing sensor probe and sensor base.
The assay method of photosynthetically active radiation space distribution rule determining instrument under a kind of above-mentioned tree crown may further comprise the steps:
(1) two ends with the standard crossbeam are separately fixed on the A-frame, place it in institute observation area under the tree crown according to accuracy of observation requirement and tree crown size;
(2) require and be preced with the quantity that width of cloth size is selected sensor and standard crossbeam according to accuracy of observation;
(3) each sensor probe is placed on the sensor base respectively, and sensor base is installed on the standard crossbeam;
(4) according to tree crown size and the requirement of observation sampling precision, regulate sensor apart from the distance of trunk with change the quantity of sensor by sensor base, with realize under the tree crown apart from the accurate mensuration of trunk different spatial radiation intensity space distribution rule;
(5) by checking horizontal bubble, regulate the leveling bolt on each sensor base, make all the sensors all be in horizontality;
(6) by signal wire each sensor probe is connected with data acquisition unit, regularly obtains the photosynthetically active radiation data of a plurality of sensors.
Trunk 4 directions of East, West, South, North or according to the direction of testing requirements the installation code crossbeam is set, be the center with the trunk on the standard crossbeam, a plurality of sensor probes be installed on the standard crossbeam of concentrically ringed mode in all directions.
Beneficial effect of the present invention:
Instrument in the present patent application and assay method can be measured under the tree crown photosynthetically active radiation intensity apart from trunk different spatial and different directions place simultaneously, again can be according to the number of tree crown size adjustment sensor and standard crossbeam, to satisfy the requirement of different tree crowns and different accuracies of observation.Therefore, this method and instrument can accurately be measured photosynthetically active radiation intensity under the tree crown, and then the spatial variability rule of diverse location under the analysis tree crown, the aspects such as stereoscopic configurations of compound spatial configuration of agricultural and shelterbelt network thereof are had important application in practice be worth.
Description of drawings
Fig. 1 is for measuring the method figure of photosynthetically active radiation space distribution rule under the tree crown
Fig. 2 is for measuring the apparatus structure figure of photosynthetically active radiation space distribution rule under the tree crown
Fig. 3 is leveling hold concurrently fixed-use bolt and nut structure figure
Fig. 4 is sensor probe and sensor base structural drawing
Among the figure: 1-sensor probe, 2-sensor base, 3-standard crossbeam, 4-bolt, 5-A-frame
Embodiment
The present invention is described in more detail below in conjunction with accompanying drawing.
Shown in Fig. 2-4, the instrument that the photosynthetically active radiation space distribution rule is measured under a kind of tree crown comprises A-frame, and it is characterized in that: described instrument also comprises sensor probe, sensor base and has the standard crossbeam of scale; Described sensor base can move along the standard crossbeam, and is installed on the standard crossbeam by bolt; Sensor probe is by being bolted on the sensor base; Described bolt has the effect of leveling sensor probe simultaneously; Also be fixed with the horizontal bubble that indicates horizontality on the sensor base.
Described bolt is by the reference level bubble, and leveling sensor makes it be in horizontality.
Described glide base bottom is the fluted body structure, and groove is fixed on the standard crossbeam.
The scale that described standard crossbeam is marked with to sensor on the standard crossbeam slip and carry out accurately mark apart from the trunk position.
Described standard crossbeam increases or reduces its quantity with the tree crown size, with the scope of expansion or contraction mensuration; Pass through the web member clamping between the described standard crossbeam.
Described bolt top is six prisms, and the middle part is smooth right cylinder, and cylinder diameter is identical with the circumcircle diameter of top six prisms, and the bottom is that diameter is greater than the cylindrical conveyor screw in middle part; Top six prisms play auxiliary leveling effect, and the middle part right cylinder is used to place sensor base, and the conveyor screw of lower cylindrical body is used for fixing sensor probe and sensor base.
The assay method of photosynthetically active radiation space distribution rule determining instrument under this tree crown, its method illustrates that as shown in fig. 1 mensuration may further comprise the steps:
(1) two ends with the standard crossbeam are separately fixed on the A-frame, place it in institute observation area under the tree crown according to accuracy of observation requirement and tree crown size;
(2) require and be preced with the quantity that width of cloth size is selected sensor and standard crossbeam according to accuracy of observation; When the sampling trees hat width of cloth was big, the length of a standard crossbeam was generally 100cm, during its curtailment, can be by the quantity of increase standard crossbeam, with expand photosynthetically active radiation measurement range.If increase the quantity that crossbeam then need correspondingly increase A-frame;
(3) each sensor probe is placed on the sensor base respectively, and sensor base is installed on the standard crossbeam;
(4) according to tree crown size and the requirement of observation sampling precision, regulate sensor apart from the distance of trunk with change the quantity of sensor by sensor base, with realize under the tree crown apart from the accurate mensuration of trunk different spatial radiation intensity space distribution rule;
(5) by checking horizontal bubble, regulate the leveling bolt on each sensor base, make all the sensors all be in horizontality;
(6) by signal wire each sensor probe is connected with data acquisition unit, regularly obtains the photosynthetically active radiation data of a plurality of sensors simultaneously.
Trunk 4 directions of East, West, South, North or according to any one direction of testing requirements the installation code crossbeam is set, be the center with the trunk on the standard crossbeam, a plurality of sensor probes be installed on the standard crossbeam of concentrically ringed mode in all directions, to obtain under the tree crown under the same time conditions, be under the same extraneous solar radiation condition, comprise different directions and apart from the photosynthetically active radiation intensity level of trunk different distance locus.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110106600 CN102252750B (en) | 2011-04-27 | 2011-04-27 | Method and instrument for measuring spatial distribution regularity of photosynthetically active radiation under tree crown |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110106600 CN102252750B (en) | 2011-04-27 | 2011-04-27 | Method and instrument for measuring spatial distribution regularity of photosynthetically active radiation under tree crown |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102252750A true CN102252750A (en) | 2011-11-23 |
| CN102252750B CN102252750B (en) | 2013-05-08 |
Family
ID=44980153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110106600 Expired - Fee Related CN102252750B (en) | 2011-04-27 | 2011-04-27 | Method and instrument for measuring spatial distribution regularity of photosynthetically active radiation under tree crown |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102252750B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103398959A (en) * | 2013-08-19 | 2013-11-20 | 南京农业大学 | Device for measuring effective irradiation area of active light source in crop canopy reflection spectrum measurement |
| CN104568145A (en) * | 2015-01-08 | 2015-04-29 | 中国科学院遥感与数字地球研究所 | System and method for observing plant canopy photosynthetically active radiation absorptivity |
| CN106197658A (en) * | 2016-10-08 | 2016-12-07 | 贵州省烟草科学研究院 | The determinator in photosynthetically active radiation space and method between a kind of flue-cured tobacco ridge |
| CN110857884A (en) * | 2018-08-23 | 2020-03-03 | 湖北省农业科学院经济作物研究所 | Method and system for determining distribution rule of photosynthetic effective radiation of mulberry canopy |
| CN112269416A (en) * | 2020-10-14 | 2021-01-26 | 深圳市众云网有限公司 | Monitoring and maintaining robot system and method applied to data center |
| CN112683538A (en) * | 2020-11-30 | 2021-04-20 | 中国航空工业集团公司北京长城航空测控技术研究所 | Solid engine test component force leveling mechanism |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2591563Y (en) * | 2002-09-16 | 2003-12-10 | 林喜生 | Frame type optical precision adsorbing level-meter |
| US20070013897A1 (en) * | 2005-05-25 | 2007-01-18 | Victor Webbeking | Instrument and method to measure available light energy for photosynthesis |
| CN201737637U (en) * | 2010-08-09 | 2011-02-09 | 西安石油大学 | Portable hoisting apparatus |
-
2011
- 2011-04-27 CN CN 201110106600 patent/CN102252750B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2591563Y (en) * | 2002-09-16 | 2003-12-10 | 林喜生 | Frame type optical precision adsorbing level-meter |
| US20070013897A1 (en) * | 2005-05-25 | 2007-01-18 | Victor Webbeking | Instrument and method to measure available light energy for photosynthesis |
| CN201737637U (en) * | 2010-08-09 | 2011-02-09 | 西安石油大学 | Portable hoisting apparatus |
Non-Patent Citations (3)
| Title |
|---|
| 《植物生态学报》 20011231 张小全等 人工同龄纯林冠层辐射场模拟模型I 理论计算 第25卷, 第05期 * |
| 张小全等: "人工同龄纯林冠层辐射场模拟模型I 理论计算", 《植物生态学报》 * |
| 郑元等: "刺槐树冠光合作用的空间异质性", 《生态学报》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103398959A (en) * | 2013-08-19 | 2013-11-20 | 南京农业大学 | Device for measuring effective irradiation area of active light source in crop canopy reflection spectrum measurement |
| CN103398959B (en) * | 2013-08-19 | 2016-03-30 | 南京农业大学 | Active light source effective irradiation area test device and method in a kind of crop canopies reflective spectral measure |
| CN104568145A (en) * | 2015-01-08 | 2015-04-29 | 中国科学院遥感与数字地球研究所 | System and method for observing plant canopy photosynthetically active radiation absorptivity |
| CN106197658A (en) * | 2016-10-08 | 2016-12-07 | 贵州省烟草科学研究院 | The determinator in photosynthetically active radiation space and method between a kind of flue-cured tobacco ridge |
| CN106197658B (en) * | 2016-10-08 | 2017-10-17 | 贵州省烟草科学研究院 | The measure device and method in photosynthetically active radiation space between a kind of flue-cured tobacco ridge |
| CN110857884A (en) * | 2018-08-23 | 2020-03-03 | 湖北省农业科学院经济作物研究所 | Method and system for determining distribution rule of photosynthetic effective radiation of mulberry canopy |
| CN112269416A (en) * | 2020-10-14 | 2021-01-26 | 深圳市众云网有限公司 | Monitoring and maintaining robot system and method applied to data center |
| CN112683538A (en) * | 2020-11-30 | 2021-04-20 | 中国航空工业集团公司北京长城航空测控技术研究所 | Solid engine test component force leveling mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102252750B (en) | 2013-05-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102252750B (en) | Method and instrument for measuring spatial distribution regularity of photosynthetically active radiation under tree crown | |
| CN105136115B (en) | A kind of method and apparatus of automatic measurement tunnel cross-section deformation | |
| AU2020101979A4 (en) | Plumb line–based multi-point three-dimensional deformation test system and test data processing method thereof | |
| CN103308006B (en) | A kind of guide rail calibration, detection method | |
| CN102589488B (en) | Optical vernier and method for detecting planeness and gradient using same | |
| CN201653546U (en) | Navaid light intensity automation measuring device | |
| CN202002633U (en) | Inner hole taper measuring equipment | |
| CN108151766A (en) | Localization method, magnetic nail positioning navigation error correcting method and the positioning device of magnetic nail | |
| CN106092137B (en) | The outdoor calibrator (-ter) unit and method of a kind of vehicle-mounted three-dimensional laser pavement detection system | |
| CN212674300U (en) | A comprehensive test device for ground solar reflectance | |
| CN208366268U (en) | A kind of middle-small span beam deflection dynamic measurement device | |
| CN113127957A (en) | Arch bridge deflection monitoring method based on temperature influence correction | |
| CN204188158U (en) | A kind of flatness checking device of variable detection position | |
| CN100590382C (en) | Photoelectric Measuring Method of Large Platform Deformation | |
| CN210533641U (en) | Bridge deflection measuring device | |
| CN208367029U (en) | A kind of mobile wind measuring device for Along Railway | |
| CN208579904U (en) | A device for measuring reference wind pressure in wind tunnel experiments | |
| CN102620891B (en) | Flexible measuring device for center of mass of cabinet and implementation method | |
| CN208704763U (en) | A kind of magnetic field induction positioning device | |
| CN110595378B (en) | Real-time ground surface or slope deformation monitoring device and method based on laser ranging principle | |
| CN106949863A (en) | White body is main to spell fixture switching system repetitive positioning accuracy detection method | |
| CN211525925U (en) | Measuring device for continuously observing convergence in tunnel engineering stability monitoring | |
| RU140220U1 (en) | HEX POSITION METER | |
| CN103644846B (en) | The online precision measurement system of the super-huge workpiece of high precision | |
| CN203534583U (en) | Sopwith staff type crown slope measurement instrument |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130508 Termination date: 20150427 |
|
| EXPY | Termination of patent right or utility model |