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
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- 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
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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 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)
1. the instrument that the photosynthetically active radiation space distribution rule is measured under the tree crown comprises A-frame, and it 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.
2. the instrument that the photosynthetically active radiation space distribution rule is measured under the tree crown as claimed in claim 1 is characterized in that: described bolt is by the reference level bubble, and leveling sensor makes it be in horizontality.
3. the instrument that the photosynthetically active radiation space distribution rule is measured under the tree crown as claimed in claim 1 is characterized in that: described glide base bottom is the fluted body structure, and groove is fixed on the standard crossbeam.
4. the instrument that the photosynthetically active radiation space distribution rule is measured under the tree crown as claimed in claim 1 is characterized in that: 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.
5. the instrument that the photosynthetically active radiation space distribution rule is measured under the tree crown as claimed in claim 1, 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 the described standard crossbeam.
6. the instrument that the photosynthetically active radiation space distribution rule is measured under the tree crown as claimed in claim 1, it is characterized in that: described bolt top is six prisms, the middle part is smooth right cylinder, 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.
7. the assay method of photosynthetically active radiation space distribution rule determining instrument under the tree crown as claimed in claim 1 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 simultaneously.
8. according to photosynthetically active radiation space distribution rule assay method under right 7 described a kind of tree crowns, it is characterized in that: in 4 directions of East, West, South, North of trunk or according to the direction of testing requirements the installation code crossbeam is set, is being the center with the trunk on the standard crossbeam, a plurality of sensor probes is being 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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Cited By (6)
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| 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 |
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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 |
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