Ridge-supporting and ditch-shaping restoration method for suaeda salsa in coastal degraded wetland

A restoration method and technology of Suaeda salsa are applied in the field of restoration of ridges and plastic ditch of Suaeda salsa in coastal degraded wetlands. methods, etc., to achieve good ecological benefits, improve biomass and seed source strength, and facilitate large-scale mechanical operations.

Inactive Publication Date: 2020-10-13
BEIJING NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially in middle and high tidal flats, due to the low frequency of tidal inundation and the high intensity of water evaporation caused by solar radiation, large areas of bare spots are formed. At present, there is no good repair method for the degradation of Suaeda salsa. Do not interfere, follow the principle of natural repair

Method used

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  • Ridge-supporting and ditch-shaping restoration method for suaeda salsa in coastal degraded wetland
  • Ridge-supporting and ditch-shaping restoration method for suaeda salsa in coastal degraded wetland
  • Ridge-supporting and ditch-shaping restoration method for suaeda salsa in coastal degraded wetland

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Select 24 groups of 30m*30m large quadrats (120m*180m in total) in an exposed degraded light flat area in the high tidal flat of the Yellow River Delta, design three furrow plowing methods, two furrow heights and furrow depths, and measure them before restoration The moisture content and salinity of the soil in each sample area were treated as follows in the middle period of the two spring tides between the end of November and the end of December:

[0039] 1. No treatment (control group);

[0040] 2. Fu ridge plastic ditch along the direction parallel to the tide (parameters: soil ridge height 30cm, width 50cm, soil ditch depth 15cm);

[0041] 3. Fu ridge plastic ditch along the direction parallel to the tide (parameters: soil ridge height 30cm, width 80cm, soil ditch depth 15cm);

[0042] 4. Fu ridge plastic ditch along the direction perpendicular to the tide (parameters: soil ridge height 30cm, width 50cm, soil ditch depth 15cm);

[0043] 5. Fu ridge plastic ditch a...

Embodiment 2

[0053] Example 2: Restoration of Suaeda salsa on the bare beach in the high tide area of ​​the coastal wetland

[0054] 1) Select 50 mu of exposed degraded tidal flats in the high tidal flats of the Yellow River Delta as the Suaeda salsa restoration area;

[0055] 2) The time for project implementation is chosen between the end of November and the end of December in the middle of the two spring tides;

[0056] 3) The boundary of the restoration area is delineated and the logo is fixed, and the status quo of the degraded area before restoration is recorded by a micro-flying camera, which is used to compare the effect of the restoration landscape;

[0057] 4) Use a tiller to mechanically ditch and ridge the surface parallel to the tidal direction and perpendicular to the tidal direction. Set the ridge height to 30cm, the ridge width to 80cm, and the furrow depth to 15cm.

Embodiment 3

[0058] Example 3: Restoration of Suaeda salsa in coastal wetland high tidal flat hydrological connectivity hindered area

[0059] 1) Select 50 mu of Suaeda salsa community in the Yellow River Delta where death occurs and forms bare (i.e. bare spot area) as the restoration area;

[0060] 2) The time for project implementation is chosen between the end of November and the end of December in the middle of the two spring tides;

[0061] 3) Use a plow machine to mechanically ditch and ridge the surface along the direction perpendicular to the tide. The ridge height is 25cm, the ridge width is 60cm, and the furrow depth is 10cm.

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Abstract

The invention relates to the technical field of ecological restoration, and provides a ridge-supporting and ditch-shaping restoration method for suaeda salsa in a coastal degraded wetland. According to the method, a suaeda salsa population degradation area or a naked carp area in the coastal degraded wetland is subjected to microtopography transformation by ridge supporting and ditch shaping, andthe complexity and heterogeneity of the surface topography are artificially and quantitively increased to increase the roughness of the soil surface layer, so that the interference on tidal hydrodynamic force is enhanced, and the effective interception amount of suaeda salsa seeds is increased; and the regular undulating soil topography formed by ridge supporting and ditch shaping can store water,relieve water and salt stress, intercept seed flow and nutrient substances in tides, promote seed germination and finally achieve a good restoration effect. The restoration method is simple and easyto implement, facilitates large-scale mechanical action, and can be widely applied to near-natural restoration of the suaeda salsa in the coastal degraded wetland.

Description

technical field [0001] The invention relates to the technical field of ecological restoration, in particular to a restoration method for ridge-supporting plastic ditches of Suaeda saline in coastal degraded wetlands. Background technique [0002] Coastal wetlands are distributed in the coastal zone where the sea and land meet and where the fresh and salty water meet, usually near the coast or the estuary. Affected by the interaction between land and sea, it is a dynamic, complex and fragile ecosystem. It plays an important role in resource supply, adjustment of atmospheric environment, flood storage and drought prevention, pollutant degradation, water purification, biodiversity protection and social and cultural carrier. Coastal salt marsh wetlands occupy a critical interface between land and sea and provide a variety of ecological and economic functions, such as: providing habitat for endangered birds, benthic organisms and fish, maintaining biodiversity and providing a va...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01B79/00A01B79/02
CPCA01B79/005A01B79/02Y02A40/22
Inventor 崔保山马旭隋皓辰王青邱冬冬刘泽正
Owner BEIJING NORMAL UNIVERSITY
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