CN104061880A - Method for determining biological soil crust coverage - Google Patents
Method for determining biological soil crust coverage Download PDFInfo
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- CN104061880A CN104061880A CN201410294012.XA CN201410294012A CN104061880A CN 104061880 A CN104061880 A CN 104061880A CN 201410294012 A CN201410294012 A CN 201410294012A CN 104061880 A CN104061880 A CN 104061880A
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- cryptogam
- biological soil
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Abstract
The invention discloses a method for determining biological soil crust coverage. A soft polyvinyl chloride biological crust coverage determination box is made. Soft polyvinyl chloride plastic with the length of 40cm, the width of 40cm and the thickness of 2mm is selected, a square with the length and width of 30cm is drawn as square grids with the side length of 2.5 cm, the width of lines is 1mm, and 169 points are formed by the intersection of the lines. A throwing method is used to randomly select a quadrat in a sample area, distilled water is sprayed to wet biological soil crust, a plastic sample frame is horizontally laid on a quadrat to be measured, and the periphery of the plastic sample frame is pressed and fixed by sandbags or stone. If cryptogam is not covered, the corresponding position of a table remains blank. The recorded number of specific cryptogam specie is counted according to the table. In addition, a digital camera can be used to take picture closely just above the sample frame, a picture is taken to a room to carry out the determination of the biological soil crust coverage in a computer. The method is friendly to the environment, the biological soil crust is not destroyed, and the method is suitable for popularization and application.
Description
Technical field
The invention belongs to ecologic environment technical field, relate to a kind of assay method of Biological Soil Crusts cover degree.
Background technology
Biological Soil Crusts (Biological soil crust, BSC) be to be extensively distributed in earth's surface important in He Han district, drought-hit area harsh and unforgiving environments to cover one of view, its cover degree accounts for the more than 40% of desert earth's surface live body covering, is important structure person and the constituent of desert ecosystem.Biological Soil Crusts is which upper soll layer molecule survived in thin solum (or sometimes living in native top layer) by, even to the bacterium that exceeds several millimeters of places, earth's surface; Blue-green algae.Diatom or green alga, microfungus, lichens and bryophyte, and the common cryptogam (aggregate structure that non-vascular plant components utilising mycelium, rhizoid and secretion " cementing " form (complicated and metastable combination) in environment, its thickness, between 3-10mm, can reach 35mm sometimes.
The mensuration of BSC cover degree is generally used a pin sample frame method estimation, the long 30cm of this sample edge, and grid specification 2.5 * 2.5cm, each fixes the probe of a long 5cm each grid node, totally 169 probes.During mensuration, first with distilled water, spray moistening Biological Soil Crusts, cryptogam formalness and color are changed, be convenient to observe.Then sample frame is vertically placed on sample prescription to be measured, observe the cryptogam that each root probe touches, and corresponding plant species title is recorded in cryptogam cover degree distribution table, if do not touch cryptogam, in form, relevant position keeps blank.This method is used under study for action conventionally; but because sample frame and pin block vision are not easy to observe; and be often to need pin to insert soil fail Biological Soil Crusts in earth's surface unevenness; give that fragile ecological environment forms for many years surface protection thing--Biological Soil Crusts causes certain destruction; this sample frame carries inconvenience in the wild, and sample frame pin is easily crooked causes certain error to sampling.
Summary of the invention
The object of the invention is to overcome the defect that above-mentioned technology exists, a kind of assay method of Biological Soil Crusts cover degree is provided, by new-type Biological Soil Crusts cover degree, measure sample frame, be named as " flexible PVC biological breadcrust cover degree is measured frame ", measure.Its concrete technical scheme is:
An assay method for Biological Soil Crusts cover degree, comprises the following steps:
(1) choose each 40cm of length and width, thickness 2mm flexible PVC plastic cement, the square that length and width are 30cm is drawn by flexible PVC plastic cement central authorities at each 40cm of length and width, 5cm lay edges is respectively stayed on four limits, the square that is 30cm by length and width is again plotted as the grid of length of side 2.5cm*2.5cm, the wide 1mm of lines, lines intersect to form 169 points;
(2) with the method for jettisoninging random sample prescription of selecting in sample ground, with distilled water, spray moistening Biological Soil Crusts, cryptogam formalness and color are changed, be convenient to observe, plastic cement sample frame is laid on sample prescription to be measured, and surrounding is fixing with sand hill or stone suppression;
(3) cryptogam that carefully each point of crossing of right-angle view covers, and by cryptogam title be recorded in cryptogam cover degree distribution table, if do not cover any cryptogam, in the relevant position of form, keep blank;
(4) according to the number of a certain specific cryptogam species of form statistic record; Can closely take pictures with digital camera vertical spline frame top in addition, take photo to the indoor measuring and calculating of carrying out on computers Biological Soil Crusts cover degree.
Preferably, the cover degree computing method of the cryptogam described in step (3) (4) (liver moss, algae and lichens) are as follows:
Cryptogamic number/the 169*100% of A cryptogam cover degree=A
Biological breadcrust cover degree is=accumulated value of all cryptogamic cover degrees in sample prescription.
Compared with prior art, beneficial effect of the present invention is:
1 makes material softer Polyvinylchloride is easy to buy and low price; 2 make simply; 3 field operations are easy to carry about with one; 4 can adopt the method for digital photographing according to picture, to measure Biological Soil Crusts cover degree on computers, dwindle the field test time, use manpower and material resources sparingly; 5 is environmentally friendly, do not destroy Biological Soil Crusts; 6 measuring principles are consistent with classical " some pin sample frame method ", and measurement result is credible.
Accompanying drawing explanation
Fig. 1 is that flexible PVC biological breadcrust cover degree of the present invention is measured frame.
Embodiment
Below in conjunction with the drawings and specific embodiments, technical scheme of the present invention is described in more detail.
Assay method referring to a kind of Biological Soil Crusts cover degree of Fig. 1, comprises the following steps:
(1) choose each 40cm of length and width, thickness 2mm flexible PVC plastic cement, the square that length and width are 30cm is drawn by flexible PVC plastic cement central authorities at each 40cm of length and width, 5cm lay edges is respectively stayed on four limits, the square that is 30cm by length and width is again plotted as the grid of length of side 2.5cm*2.5cm, the wide 1mm of lines, lines intersect to form 169 points;
(2) with the method for jettisoninging random sample prescription of selecting in sample ground, with distilled water, spray moistening Biological Soil Crusts, cryptogam formalness and color are changed, be convenient to observe, plastic cement sample frame is laid on sample prescription to be measured, and surrounding is fixing with sand hill or stone suppression;
(3) cryptogam that carefully each point of crossing of right-angle view covers, and by cryptogam title be recorded in cryptogam cover degree distribution table, if do not cover any cryptogam, in the relevant position of form, keep blank;
(4) according to the number of a certain specific cryptogam species of form statistic record; Can closely take pictures with digital camera vertical spline frame top in addition, take photo to the indoor measuring and calculating of carrying out on computers Biological Soil Crusts cover degree.
Cryptogamic cover degree computing method described in step (4) are as follows:
Cryptogamic number/the 169*100% of A cryptogam cover degree=A
Biological breadcrust cover degree is=accumulated value of all cryptogamic cover degrees in sample prescription.
Cryptogam described in step (3) is liver moss, algae and lichens etc.
Measuring principle of the present invention is consistent with classical " some pin sample frame method ", and this method does not change the measuring principle of classical assay method, so measurement result is credible
The above; it is only preferably embodiment of the present invention; protection scope of the present invention is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses, the simple change of the technical scheme that can obtain apparently or equivalence are replaced and are all fallen within the scope of protection of the present invention.
Claims (3)
1. an assay method for Biological Soil Crusts cover degree, is characterized in that, comprises the following steps:
(1) choose each 40cm of length and width, thickness 2mm flexible PVC plastic cement, the square that length and width are 30cm is drawn by flexible PVC plastic cement central authorities at each 40cm of length and width, 5cm lay edges is respectively stayed on four limits, the square that is 30cm by length and width is again plotted as the grid of length of side 2.5cm*2.5cm, the wide 1mm of lines, lines intersect to form 169 points;
(2) with the method for jettisoninging random sample prescription of selecting in sample ground, with distilled water, spray moistening Biological Soil Crusts, cryptogam formalness and color are changed, be convenient to observe, plastic cement sample frame is laid on sample prescription to be measured, and surrounding is fixing with sand hill or stone suppression;
(3) cryptogam that carefully each point of crossing of right-angle view covers, and by cryptogam title be recorded in cryptogam cover degree distribution table, if do not cover any cryptogam, in the relevant position of form, keep blank;
(4) according to the number of a certain specific cryptogam species of form statistic record; With digital camera vertical spline frame top, closely take pictures in addition, take photo to the indoor measuring and calculating of carrying out on computers Biological Soil Crusts cover degree.
2. the assay method of Biological Soil Crusts cover degree according to claim 1, is characterized in that, the cryptogamic cover degree computing method described in step (4) are as follows:
Cryptogamic number/the 169*100% of A cryptogam cover degree=A
Biological breadcrust cover degree is=accumulated value of all cryptogamic cover degrees in sample prescription.
3. the assay method of Biological Soil Crusts cover degree according to claim 1, is characterized in that, the cryptogam described in step (3) is liver moss, algae and lichens.
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| CN201410294012.XA CN104061880A (en) | 2014-06-21 | 2014-06-21 | Method for determining biological soil crust coverage |
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| CN201410294012.XA CN104061880A (en) | 2014-06-21 | 2014-06-21 | Method for determining biological soil crust coverage |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105606061A (en) * | 2016-03-10 | 2016-05-25 | 北京林业大学 | Lawn quadrat coverage detection method and apparatus |
| CN105651153A (en) * | 2016-04-01 | 2016-06-08 | 岭南师范学院 | Sample box and method for measuring incidence and severity of lawn grass diseases |
| CN107677259A (en) * | 2017-09-29 | 2018-02-09 | 福建农林大学 | A kind of measurement apparatus and its measuring method of herbaceous community species distribution general layout |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5642107A (en) * | 1979-09-14 | 1981-04-20 | Jeol Ltd | Measuring method for area ratio of specified region in picture |
| JP2005007338A (en) * | 2003-06-20 | 2005-01-13 | Ishigaki Co Ltd | Method and apparatus for controlling injection of flocculant |
| CN200982957Y (en) * | 2006-11-30 | 2007-11-28 | 中国辐射防护研究院 | Flowing gas direct ratio detector array |
| CN101915565A (en) * | 2010-07-20 | 2010-12-15 | 中国科学院寒区旱区环境与工程研究所 | Outdoor measuring sample frame for coverage of cryptogam |
| CN102138508A (en) * | 2011-03-22 | 2011-08-03 | 北京市农林科学院 | Method for greening and protecting steep road side slope by using biological crust |
-
2014
- 2014-06-21 CN CN201410294012.XA patent/CN104061880A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5642107A (en) * | 1979-09-14 | 1981-04-20 | Jeol Ltd | Measuring method for area ratio of specified region in picture |
| JP2005007338A (en) * | 2003-06-20 | 2005-01-13 | Ishigaki Co Ltd | Method and apparatus for controlling injection of flocculant |
| CN200982957Y (en) * | 2006-11-30 | 2007-11-28 | 中国辐射防护研究院 | Flowing gas direct ratio detector array |
| CN101915565A (en) * | 2010-07-20 | 2010-12-15 | 中国科学院寒区旱区环境与工程研究所 | Outdoor measuring sample frame for coverage of cryptogam |
| CN102138508A (en) * | 2011-03-22 | 2011-08-03 | 北京市农林科学院 | Method for greening and protecting steep road side slope by using biological crust |
Non-Patent Citations (4)
| Title |
|---|
| 吴见 等: "不同地形条件下植被盖度信息提取技术研究", 《植物生态学报》 * |
| 张云霞 等: "草地植被盖度的多尺度遥感与实地测量方法综述", 《地球科学进展》 * |
| 沙若兰德 等: "《生态学调查方法手册》", 31 March 1999, 科学技术文献出版社 * |
| 温庆可 等: "草地覆盖度测算方法研究进展", 《草业科学》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105606061A (en) * | 2016-03-10 | 2016-05-25 | 北京林业大学 | Lawn quadrat coverage detection method and apparatus |
| CN105606061B (en) * | 2016-03-10 | 2020-05-12 | 北京林业大学 | Detection apparatus for meadow appearance side of coverage degree |
| CN105651153A (en) * | 2016-04-01 | 2016-06-08 | 岭南师范学院 | Sample box and method for measuring incidence and severity of lawn grass diseases |
| CN107677259A (en) * | 2017-09-29 | 2018-02-09 | 福建农林大学 | A kind of measurement apparatus and its measuring method of herbaceous community species distribution general layout |
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Application publication date: 20140924 |