CN102252750B - 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
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- CN102252750B CN102252750B CN 201110106600 CN201110106600A CN102252750B CN 102252750 B CN102252750 B CN 102252750B CN 201110106600 CN201110106600 CN 201110106600 CN 201110106600 A CN201110106600 A CN 201110106600A CN 102252750 B CN102252750 B CN 102252750B
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Abstract
The invention discloses a method and instrument for measuring spatial distribution regularity of photosynthetically active radiation under a tree crown. A sensor base of the instrument can move along a standard beam, and is arranged on the standard beam through a bolt; sensor probes are fixed on the sensor base; and a leveling bubble for indicating the level state is also fixed on the sensor base. The measuring method comprises the steps of arranging the standard beam for the photosynthetically active radiation in any direction of a trunk, arranging multiple sensor probes in any direction on the standard beam by taking the trunk as the center and by using a concentric circle way, and connecting the probes to the same data acquisition unit through signal lines; and precisely adjusting the distance between each sensor probe and the trunk through the scales on the standard beam. According to the measuring method and instrument disclosed by the invention, the photosynthetically active radiation intensities can be measured at different spatial positions under the tree crown simultaneously, the measurement is convenient and quick, and the measuring method and instrument disclosed by the invention have important practice application values on the agroforestry spatial distribution, the three-dimensional configuration of a protection forest system of the agroforestry and the like.
Description
Technical field
The present invention's industry meteorological observation concerning farmers instrument technical field, particularly photosynthetically active radiation space distribution rule assay method and instrument thereof under 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 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, and Points replacing surfaces is measured the photosynthetically active radiation intensity of whole radiation field; Another kind is the bar-shaped instrument with a plurality of sensor probes, can measure the mean value of whole radiation field photosynthetically active radiation intensity but can not record the photosynthetically active radiation intensity of each single-point, namely whole radiation field photosynthetically active radiation intensity being measured and described for point with face.Above-mentioned two kinds of methods and instrument all can not be measured the space distribution rule of photosynthetically active radiation under tree crown, and reason is: the photosynthetically active radiation under tree crown exists very large Spatial Variability, and the strength detection of single-sensor is not enough to describe whole radiation field; And can only record the mean value of radiation intensity with bar-shaped sensor, although represented the whole photosynthetically active radiation level under the tree crown with multiple spot radiation value average, can not measure exactly spatial distribution state and the rule thereof of each point.Partly locate observation process in the research of ecosystem meteorology and location, particularly in agroforestry research, often can require to measure the concrete Changing Pattern of the photosynthetically active radiation different spatial under tree crown under tree crown.
Summary of the invention
The objective of the invention is the deficiency for existing single photosynthetically active radiation sensor and bar-shaped many probe photosynthetically active radiation sensor mensuration, 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 accurately photosynthetically active radiation in environment, and swift and convenient to operate, time saving and energy saving.
Technical scheme of the present invention is:
The instrument that under a kind of tree crown, the photosynthetically active radiation space distribution rule is measured, comprise that A-frame is characterized in that: described instrument also comprises sensor probe, sensor base, bolt and is with graduated standard crossbeam; Described sensor base can be along the standard cross beam movement, and is arranged on the standard crossbeam by bolt; Sensor probe is bolted on sensor base; Described bolt has the effect of leveling sensor probe simultaneously; Also be fixed with the horizontal bubble that indicates horizontality on 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 slip on the standard crossbeam and carry out accurately mark apart from the trunk position to sensor.
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 described standard crossbeam.
Described bolt top is six prisms, and the middle part is 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 for placing sensor base, and the conveyor screw of lower cylindrical body is used for fixation of 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 comprises the following steps:
(1) two ends with the standard crossbeam are separately fixed on A-frame, place it in institute observation area under tree crown according to accuracy of observation requirement and tree crown size;
(2) require and be preced with the quantity that the width size is selected sensor and standard crossbeam according to accuracy of observation;
(3) each sensor probe is placed on sensor base respectively, and sensor base is arranged 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 and change the quantity of sensor by sensor base, with realization under tree crown apart from the Accurate Determining 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 the photosynthetically active radiation data of a plurality of sensors of timing acquisition with data acquisition unit.
Trunk 4 directions of East, West, South, North or according to the direction of testing requirements, the installation code crossbeam is set, on the standard crossbeam centered by trunk, a plurality of sensor probes are 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 tree crown the 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 the Accurate Measurement tree crown under photosynthetically active radiation intensity, and then the spatial varying law of diverse location under the analysis tree crown, the aspects such as stereoscopic configurations of the compound space 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 tree crown
Fig. 2 is for measuring the apparatus structure figure of photosynthetically active radiation space distribution rule under tree crown
Fig. 3 is hold concurrently fixed-use bolt and nut structure figure of leveling
Fig. 4 is sensor probe and sensor base structural drawing
In 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.
As shown in Fig. 2-4, the instrument that under a kind of tree crown, the photosynthetically active radiation space distribution rule is measured comprises A-frame, and it is characterized in that: described instrument also comprises sensor probe, sensor base and is with graduated standard crossbeam; Described sensor base can be along the standard cross beam movement, and is arranged on the standard crossbeam by bolt; Sensor probe is bolted on sensor base; Described bolt has the effect of leveling sensor probe simultaneously; Also be fixed with the horizontal bubble that indicates horizontality on 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 slip on the standard crossbeam and carry out accurately mark apart from the trunk position to sensor.
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 described standard crossbeam.
Described bolt top is six prisms, and the middle part is 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 for placing sensor base, and the conveyor screw of lower cylindrical body is used for fixation of sensor probe and sensor base.
The assay method of photosynthetically active radiation space distribution rule determining instrument under this tree crown, the signal of its method as shown in fig. 1, mensuration comprises the following steps:
(1) two ends with the standard crossbeam are separately fixed on A-frame, place it in institute observation area under tree crown according to accuracy of observation requirement and tree crown size;
(2) require and be preced with the quantity that the width size is selected sensor and standard crossbeam according to accuracy of observation; When sampling trees hat width was larger, 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.Need correspondingly increase the quantity of A-frame if increase crossbeam;
(3) each sensor probe is placed on sensor base respectively, and sensor base is arranged 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 and change the quantity of sensor by sensor base, with realization under tree crown apart from the Accurate Determining 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 simultaneously the photosynthetically active radiation data of a plurality of sensors.
Trunk 4 directions of East, West, South, North or according to any one direction of testing requirements, the installation code crossbeam is set, on the standard crossbeam centered by trunk, a plurality of sensor probes are installed on the standard crossbeam of concentrically ringed mode in all directions, to obtain under tree crown under same time conditions, be under same extraneous solar radiation condition, comprise different directions and apart from the photosynthetically active radiation intensity level of trunk different distance locus.
Claims (8)
1. the instrument that under a tree crown, the photosynthetically active radiation space distribution rule is measured comprises A-frame, and it is characterized in that: described instrument also comprises sensor probe, sensor base, bolt and is with graduated standard crossbeam; Described sensor base can be along the standard cross beam movement, and is arranged on the standard crossbeam by bolt; Sensor probe is bolted on sensor base; Described bolt has the effect of leveling sensor probe simultaneously; Also be fixed with the horizontal bubble that indicates horizontality on sensor base; Described bolt top is six prisms, and the middle part is 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 for placing sensor base, and the conveyor screw of lower cylindrical body is used for fixation of sensor probe and sensor base.
2. the instrument that under tree crown as claimed in claim 1, the photosynthetically active radiation space distribution rule is measured is characterized in that: described bolt is by the reference level bubble, and leveling sensor makes it be in horizontality.
3. the instrument that under tree crown as claimed in claim 1, the photosynthetically active radiation space distribution rule is measured is characterized in that: be the fluted body structure bottom described sensor base, groove is fixed on the standard crossbeam.
4. the instrument that under tree crown as claimed in claim 1, the photosynthetically active radiation space distribution rule is measured is characterized in that: the scale that described standard crossbeam is marked with slip on the standard crossbeam and carry out accurately mark apart from the trunk position to sensor.
5. the instrument that under tree crown as claimed in claim 1, the photosynthetically active radiation space distribution rule is measured, it is characterized in that: 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 described standard crossbeam.
6. one kind is adopted that under tree crown as claimed in claim 1, photosynthetically active radiation space distribution rule determining instrument carries out method for measuring, comprises the following steps:
(1) two ends with the standard crossbeam are separately fixed on A-frame, place it in institute observation area under tree crown according to accuracy of observation requirement and tree crown size;
(2) require and be preced with the quantity that the width size is selected sensor and standard crossbeam according to accuracy of observation;
(3) each sensor probe is placed on sensor base respectively, and sensor base is arranged 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 and change the quantity of sensor by sensor base, with realization under tree crown apart from the Accurate Determining 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 simultaneously the photosynthetically active radiation data of a plurality of sensors.
7. under a kind of employing tree crown described according to right 6, photosynthetically active radiation space distribution rule determining instrument carries out method for measuring, it is characterized in that: according to the direction of testing requirements, the installation code crossbeam is set, on the standard crossbeam centered by trunk, a plurality of sensor probes are installed on the standard crossbeam of concentrically ringed mode in all directions.
8. under a kind of employing tree crown described according to right 6, photosynthetically active radiation space distribution rule determining instrument carries out method for measuring, it is characterized in that: 4 directions of East, West, South, North at trunk arrange the installation code crossbeam, on the standard crossbeam centered by trunk, a plurality of sensor probes are installed on the standard crossbeam of concentrically ringed mode in all directions.
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| 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 |
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| 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 |
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| CN102252750B true CN102252750B (en) | 2013-05-08 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN104568145B (en) * | 2015-01-08 | 2018-02-13 | 中国科学院遥感与数字地球研究所 | A kind of observation system and method for Vegetation canopy photosynthetically active radiation assimilation ratio |
| 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 |
| CN112269416B (en) * | 2020-10-14 | 2022-03-15 | 深圳市众云网有限公司 | Monitoring and maintaining robot system and method applied to data center |
| CN112683538B (en) * | 2020-11-30 | 2022-09-16 | 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 (2)
| 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 |
| CN201737637U (en) * | 2010-08-09 | 2011-02-09 | 西安石油大学 | Portable hoisting apparatus |
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| US7232987B2 (en) * | 2005-05-25 | 2007-06-19 | Victor Webbeking | Instrument and method to measure available light energy for photosynthesis |
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Patent Citations (2)
| 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 |
| CN201737637U (en) * | 2010-08-09 | 2011-02-09 | 西安石油大学 | Portable hoisting apparatus |
Non-Patent Citations (4)
| Title |
|---|
| 人工同龄纯林冠层辐射场模拟模型I 理论计算;张小全等;《植物生态学报》;20011231;第25卷(第05期);第609页-第615页 * |
| 刺槐树冠光合作用的空间异质性;郑元等;《生态学报》;20101231;第30卷(第23期);第6399页-第6408页 * |
| 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》.2001,第25卷(第05期), |
| 郑元等.刺槐树冠光合作用的空间异质性.《生态学报》.2010,第30卷(第23期), |
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