CN102349421A - Technical method for regulating and controlling semi-arid and semi-humid region water coastal zone vegetation moisture functional group distribution - Google Patents
Technical method for regulating and controlling semi-arid and semi-humid region water coastal zone vegetation moisture functional group distribution Download PDFInfo
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- CN102349421A CN102349421A CN2011101845919A CN201110184591A CN102349421A CN 102349421 A CN102349421 A CN 102349421A CN 2011101845919 A CN2011101845919 A CN 2011101845919A CN 201110184591 A CN201110184591 A CN 201110184591A CN 102349421 A CN102349421 A CN 102349421A
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Abstract
The invention provides a technical method for regulating and controlling the space distribution of semi-arid and semi-humid region river, wet land and other water coastal zone vegetation moisture functional groups (hygrophytes, mesophytes and xerophytes) through 2 indexes of gradient and soil matrix grain size, particularly a comparison table of a coastal zone matrix grain size index and a hygrophyte and xerophyte boundary height line. The xerophytes take the boundary height line as a central line to be transitionally distributed towards a slope top and a slope toe. In river and wet land coastal zone vegetation repair ecological engineering, the regulation and control of the space distribution of the vegetation moisture functional group can be realized through the 2 indexes of matrix grain size and gradient.
Description
Technical field
What the present invention relates to is a kind of shore bank band engineering design technology, especially a kind of designing technique that is used to regulate and control water-body bank band vegetation moisture functional group spatial distributions such as semiarid half humid region river, lake, wetland.
Background technology
Shore bank band is the transition region on water body such as rivers and lakes and land, has the pollutant of minimizing and gets into water body, the wild animals and plants habitat is provided, improves many ecological functions and social function such as water ecological setting, in watershed ecosystem, plays an important role.But because lake, China river management for a long time is a main target with the flood control, a large amount of rivers, wetland shore bank band are changed the gradient and harden, and make shore, river bank band lose ecological functions.In recent years; Shore bank band natural vegetation recovers to become the important content of water ecology recovery project; But owing to lack understanding to internal association between vegetation and the shore bank band physical aspect; Shortage causes a large amount of engineerings to be difficult to realize the optimization of vegetation structure to the scientific guidance of restoration of the ecosystem engineering design.Based on plant ecology principle, the scientific law of vegetation composition is converted into design parameters such as shore bank band form and soil matrix, offer the project planner, with the success rate that ensures that effectively vegetation structure recovers in the restoration of the ecosystem engineering.
The optimization of semiarid half humid region shore bank zone vegetation structure mainly contains the requirement of following 2 aspects: (1) shore bank band form helps large tracts of land as far as possible and grows wet, middle living vegetation to prolong the green time that covers, and brings into play bigger Ecosystem Service; (2) Soil Moisture multiple moisture functional group such as can keep that humidogene, middle life, drought are given birth to and rich species diversity are to resist alien species and single weed competition.
The form that present shore bank band recovers mainly is to have adopted seepy materials such as gabion, piece stone, ecological brick, paling; To promote that the moisture lateral communication is a target; But since the optimization of vegetation structure depend on to matrix the demand of carded sliver spare and water content; And plant is being difficult to give birth on the hard material, causes the restoration of the ecosystem engineering can not reach the target of restore vegetation structure.
Summary of the invention
In order to overcome the blindness that present various shores bank zone vegetation recovers engineering design, the present invention provides the design technical parameter that a cover the principles of science is clear, have universality, satisfies the demand of multiple grade particle diameter host material shore bank zone vegetation recovery project design.
The technical scheme that technical solution problem of the present invention is adopted is:
1. set humidogene, xerophytic boundary line height according to shore bank carrying substrates particle diameter
At semiarid, half humid region, the vegetation moisture functional form of shore bank band exists significant Gradient distribution rule and tangible boundary line.Find that through the open-air vegetation structure investigation of shore bank band belt transect the distribution that humidogene, middle life, drought are given birth to three kinds of moisture functional groups exists direct related with soil moisture content.The lab simulation investigation finds that the upper limit that soil capillary water exists is the distribution boundary line of humidogene and xerophytes functional group, and this rule has obtained confirmation in the investigation of shore, many places bank band.The capillary ascent tabulation that has corresponding relation with particle diameter has been obtained in research, as the index (table 1) in indication humidogene and xerophytes height boundary line.The matrix particle diameter has determined hygrophyte and xerophytic height boundary line above water.Because this index is relevant with the plant water physiology demand, has unique corresponding relation with the matrix particle diameter again, can be used as the standard parameter of shore bank band engineering design.
Table 1 shore bank tape base plasmid warp and wet, xerophytes moisture functional group distribution height boundary line mapping table
| The particle diameter rank | Particle diameter (mm) | Drought is given birth to and hygrophyte line of demarcation height H (cm) |
| Fine powder is husky | 0.008 | 750 |
| Meal is husky | 0.025 | 300 |
| Very fine sand | 0.075 | 100 |
| Fine sand | 0.150 | 50 |
| Medium sand | 0.3 | 25 |
| Coarse sand | 0.5 | 15 |
| Very coarse sand | 2 | 4 |
| Gravel | 5 | 1.5 |
2. adjust the area of vegetation moisture functional group through the shore bank band gradient
The area of shore bank zone vegetation moisture functional group is by wet, xerophytes boundary line height and the common decision of the gradient above water.Under the prerequisite of identical matrix particle diameter, the gradient is slow more, the distribution of hygrophilous vegetation domatic longer, area is big more, is that the area of mesophytes of middle mind-set both sides expansions is also big more with altitude line.The shore bank band that the matrix particle diameter is little, the slope is slow can provide the soil moisture environment for keeping multifarious plant moisture functional group.
The present invention has following conspicuous substantive distinguishing features and advantage compared with prior art: (1) the principles of science is clear; (2) regulating effect is conclusive; (3) can be applied to direct convenience planning and designing.
Description of drawings
Fig. 1 is the domatic Gradient distribution height of bank band plant moisture functional group boundary line, a shore sketch map.
Claims (1)
1. technical method that the semiarid half humid region water-body bank band vegetation moisture functional group of regulation and control distributes, core content are the demarcate tables of comparisons of altitude line of a shore bank band soil matrix particle diameter and humidogene, xerophytes.
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| CN2011101845919A CN102349421A (en) | 2011-07-04 | 2011-07-04 | Technical method for regulating and controlling semi-arid and semi-humid region water coastal zone vegetation moisture functional group distribution |
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| CN2011101845919A CN102349421A (en) | 2011-07-04 | 2011-07-04 | Technical method for regulating and controlling semi-arid and semi-humid region water coastal zone vegetation moisture functional group distribution |
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| CN102349421A true CN102349421A (en) | 2012-02-15 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105359770A (en) * | 2015-09-29 | 2016-03-02 | 中国环境科学研究院 | Construction method for suburb gentle slope land-lake ecotone vegetational community |
| CN105668944A (en) * | 2016-03-31 | 2016-06-15 | 华中农业大学 | Riparian zone sewage reduction method |
| CN107439079A (en) * | 2017-08-11 | 2017-12-08 | 黑龙江省农垦科学院 | It is a kind of to improve method of the North Plain river shore bank with grit soil |
| CN117502128A (en) * | 2024-01-05 | 2024-02-06 | 中国科学院东北地理与农业生态研究所 | Vegetation optimal allocation method for lakeside shoreline slope in semiarid region |
-
2011
- 2011-07-04 CN CN2011101845919A patent/CN102349421A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105359770A (en) * | 2015-09-29 | 2016-03-02 | 中国环境科学研究院 | Construction method for suburb gentle slope land-lake ecotone vegetational community |
| CN105359770B (en) * | 2015-09-29 | 2018-10-26 | 中国环境科学研究院 | Outskirts of a town gentle slope type land inland water ecotone vegetational type construction method |
| CN105668944A (en) * | 2016-03-31 | 2016-06-15 | 华中农业大学 | Riparian zone sewage reduction method |
| CN105668944B (en) * | 2016-03-31 | 2018-12-28 | 华中农业大学 | A kind of Riparian Zone subtracts dirty method |
| CN107439079A (en) * | 2017-08-11 | 2017-12-08 | 黑龙江省农垦科学院 | It is a kind of to improve method of the North Plain river shore bank with grit soil |
| CN117502128A (en) * | 2024-01-05 | 2024-02-06 | 中国科学院东北地理与农业生态研究所 | Vegetation optimal allocation method for lakeside shoreline slope in semiarid region |
| CN117502128B (en) * | 2024-01-05 | 2024-03-29 | 中国科学院东北地理与农业生态研究所 | Vegetation optimal allocation method for lakeside shoreline slope in semiarid region |
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Application publication date: 20120215 |