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A method of restoring tidal flat ecology by constructing ecological tidal trenches

An ecological and tidal flat technology, applied in land preparation methods, botanical equipment and methods, lawn growth, etc., can solve problems such as reduced connectivity, and achieve the effect of delaying residence time and increasing salt replenishment time.

Active Publication Date: 2022-03-15
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After 2000, the Suaeda salsa community began to show a shrinking trend, and the original Suaeda salsa community area was continuously encroached by reed communities. By 2019, reed communities dominated the coastal tidal flats of Yancheng, and reed communities dominated the low-level tidal flats. The Spartina alterniflora community is dominant, and the Suaeda salsa community is distributed in the middle tidal flat, but its overall connectivity is reduced, and the distribution presents a fragmented pattern

Method used

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  • A method of restoring tidal flat ecology by constructing ecological tidal trenches
  • A method of restoring tidal flat ecology by constructing ecological tidal trenches
  • A method of restoring tidal flat ecology by constructing ecological tidal trenches

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] S1: Determine the tidal flat area to be repaired: determine the tidal flat area to be repaired according to the vegetation distribution and elevation;

[0055] S2: Determination of the sea tide line: survey the tidal activities in the sea area, record the flooding frequency and water level changes of the tidal flats to be repaired, and detect the groundwater level changes of the tidal flats to be repaired; according to the activity range of large tides and small tides, Such as figure 1 As shown, determine the coastline 9, spring high tide line 10, spring tide low tide line 13, neap high tide line 11, neap low tide line 12;

[0056] S3: Divide tidal flat areas to be repaired: eg figure 1 As shown, the spring tide high tide line 10 is set as the upper boundary of the high tide area 1, the neap tide high tide line 11 is set as the lower boundary of the high tide area 1, and the high tide area 1 is obtained; the neap tide high tide line 11 is set as the upper boundary of t...

Embodiment 2

[0061] S1: Determine the tidal flat area to be repaired: determine the tidal flat area to be repaired according to the vegetation distribution and elevation;

[0062] S2: Determination of the sea tide line: survey the tidal activities in the sea area, record the flooding frequency and water level changes of the tidal flats to be repaired, and detect the groundwater level changes of the tidal flats to be repaired; according to the activity range of large tides and small tides, Such as figure 1 As shown, determine the coastline 9, spring high tide line 10, spring tide low tide line 13, neap high tide line 11, neap low tide line 12;

[0063] S3: Divide tidal flat areas to be repaired: eg figure 1 As shown, the spring tide high tide line 10 is set as the upper boundary of the high tide area 1, the neap tide high tide line 11 is set as the lower boundary of the high tide area 1, and the high tide area 1 is obtained; the neap tide high tide line 11 is set as the upper boundary of t...

Embodiment 3

[0068] S1: Determine the tidal flat area to be repaired: determine the tidal flat area to be repaired according to the vegetation distribution and elevation;

[0069] S2: Determination of the sea tide line: survey the tidal activities in the sea area, record the flooding frequency and water level changes of the tidal flats to be repaired, and detect the groundwater level changes of the tidal flats to be repaired; according to the activity range of large tides and small tides, Such as figure 1 As shown, determine the coastline 9, spring high tide line 10, spring tide low tide line 13, neap high tide line 11, neap low tide line 12;

[0070] S3: Divide tidal flat areas to be repaired: eg figure 1 As shown, the spring tide high tide line 10 is set as the upper boundary of the high tide area 1, the neap tide high tide line 11 is set as the lower boundary of the high tide area 1, and the high tide area 1 is obtained; the neap tide high tide line 11 is set as the upper boundary of t...

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Abstract

The invention discloses a method for restoring tidal flat ecology by constructing an ecological tidal ditch. The invention adjusts water and salt to control vegetation by constructing an ecological tidal trench, solves the problem that reeds invade Suaeda salsa after occupying the low tide zone and causes Suaeda salsa vegetation to be fragmented, and achieves the effect of restoring the tidal flat vegetation zone. (1) Use the construction of ecological tidal trenches to facilitate the flow of fresh water from the high beach area to the low beach area, block the migration of groundwater to ensure the relative humidity of the soil in the middle beach area; and use the tidal activities to effectively treat the soil in the middle beach area Supplement the salinity to create a soil environment suitable for the growth of Suaeda salsa. (2) Utilize the synergistic effect of the diversion canal, the cut-off diversion ditch and the tidal drainage ditch to break the ecological partition formed by the silt-promoting effect of Spartina alterniflora, and solve the problem of reed invasion of Suaeda salsa after Spartina alterniflora occupies the low tide zone, causing Suaeda salsa The problem of vegetation fragmentation can be solved, and the effect of restoring tidal flat vegetation belt can be achieved.

Description

technical field [0001] The invention relates to the technical field of tidal flat ecological restoration, in particular to a method for restoring tidal flat ecology by constructing an ecological tidal trench. Background technique [0002] In recent years, the degradation of coastal tidal flat vegetation and the decline of biological pleomorphism caused by species invasion have attracted widespread attention. The ecological environment of most coastal tidal flats in my country has deteriorated. Human activities and the invasion of alien species have seriously encroached on the living space of native species, causing tidal flat animals to lose their habitats and breeding places, and eventually leading to the collapse of tidal flat ecosystems. For example, the coastal tidal flat area of ​​Yancheng, its salt flat Before 2000, the Suaeda salsa community showed an expansion trend, and the expansion direction was toward the sea. At the same time, the Spartina alterniflora community ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01B79/02A01G20/00A01G22/00
CPCA01B79/02A01G22/00A01G20/00
Inventor 刘茂松肖孟阳王博廖安邦
Owner NANJING UNIV