Method for ecological restoration of saline lake shore zone

Abstract

The application discloses a kind of saline-alkali lake shore zone ecological restoration method, it is related to the technical field of shore zone ecological restoration.The ecological restoration system is constructed in saline-alkali lake shore zone, and the ecological restoration system includes planting ridge and alkali water ditch, U-shaped groove is excavated on planting ridge, water is irrigated to wash salt in U-shaped groove, water is always stored in U-shaped groove when irrigating to wash salt, water is replenished in time after water consumption, and the time of irrigating to wash salt is not less than 2 months, surface salt layer in U-shaped groove is removed in spring of the second year, and salt-tolerant plants are planted in groove.The above measures are taken to realize salt removal of saline-alkali lake shore zone under the condition of less fresh water, improve soil aggregate structure, reduce the damage probability of facilities by heavy rain, and realize the ecological restoration of saline-alkali lake shore zone.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ecological restoration of lakeside zone, in particular to a method for ecological restoration of saline-alkali lakeside zone. BACKGROUND

[0002] The saline-alkali phenomenon often occurs in arid region lakes due to geological conditions, climate conditions and hydrodynamic conditions. In addition to the salinization of lake water, the lakeside zone also often has serious salinization problems, which leads to the inability of plants to survive, serious desertification and poor stability of the ecological system. For example, in addition to a small amount of surviving salt bush, there is almost no other plant in the lakeside zone of the East Lake of the Taizhongshan Wetland in Ningxia. For such saline-alkali lakeside zones, in addition to considering the restoration effect, the ecological benefits brought by the improvement of the regional ecological environment and the landscape after restoration also need to be considered. However, the common saline-alkali restoration and treatment is currently used in farmland and coastal beaches, and the restoration of saline-alkali lakeside zones in arid regions is not common.

[0003] Therefore, when restoring the saline-alkali lakeside zone, three main problems need to be solved according to the actual situation:

[0004] 1. The rainfall in arid regions is uneven, and there are heavy rains in summer. In addition to considering the cost when building restoration facilities, the damage of heavy rains to the facilities should also be taken into account, and the loss should be reduced as much as possible.

[0005] 2. Fresh water washing salt is a common measure for salt removal in farmland. In arid regions, water is scarce. How to achieve salt washing with less fresh water and improve the soil aggregate structure so that the restored soil is conducive to plant growth needs to be considered.

[0006] 3. The lakeside zone is close to the lake, the water level is high, the soil humidity is large, and the saline-alkali lake water is easy to backflow. Therefore, the soil salt content after the reduction of the lakeside zone needs to be controlled to prevent the replenishment of salt by high-salinity lake water. SUMMARY

[0007] (I) Technical problems solved

[0008] In view of the deficiencies in the prior art, the present application provides a method for ecological restoration of saline-alkali lakeside zone, which solves the three problems mentioned in the background art, i.e. 1. the facilities are easy to be damaged by floods; 2. less fresh water is used to wash salt and improve the soil aggregate structure; and 3. the high-salinity lake water backflow replenishes the soil salt.

[0009] (II) Technical scheme

[0010] To achieve the above purpose, the present application is implemented by the following technical scheme:

[0011] The method for ecological restoration of saline-alkali lakeside zone comprises the following steps:

[0012] S1, constructing an ecological restoration system in the saline lake shore zone, the ecological restoration system comprising planting ridges and saline water ditches, the planting ridges being perpendicular to the lake shore line, and the saline water ditches being arranged between two planting ridges;

[0013] S2, excavating U-shaped trenches on the planting ridges, and irrigating and washing salt in the U-shaped trenches, water being always stored in the U-shaped trenches during the irrigating and washing salt, and water being replenished in time after the water is consumed, the irrigating and washing salt lasting for no less than 2 months;

[0014] S3, removing the surface salt layer in the U-shaped trenches in the spring of the second year, and planting salt-tolerant plants in the trenches.

[0015] Preferably, the ecological restoration system further comprises a water inlet ditch and a drainage ditch, the water inlet ditch being located at one end of the planting ridge away from the lake shore line, and the drainage ditch being located at one end of the planting ridge close to the lake shore line; one end of the drainage ditch is provided with a regulating gate, one side of the drainage ditch close to the lake shore line is provided with a flood control embankment, and stable piles are arranged on the flood control embankment in a row.

[0016] Preferably, the side of the water inlet ditch away from the planting ridge is further provided with a buffer zone, geotextile is laid on the buffer zone, one end of the geotextile extends to the bottom of the water inlet ditch, and one end of the geotextile is embedded in the soil of the lake shore zone, and barbed anchor rods are inserted into the buffer zone.

[0017] Preferably, the planting ridge comprises a planting layer, a soil separation layer and a salt separation layer, the planting ridge being constructed by first excavating on the lake shore zone, then filling the salt separation layer to prevent the downward salt from moving upward with water, the salt separation layer being internally provided with a drainage pipe, the soil separation layer being laid on the upper part of the salt separation layer, the soil separation layer being geotextile, and the planting layer being formed by backfilling original soil on the upper part of the soil separation layer.

[0018] Preferably, desulfurization slag is applied after the backfilling of the planting layer, the thickness of the desulfurization slag being not less than 1 / 5 of the thickness of the planting layer, and then rotary tillage is performed to mix the desulfurization slag, the depth of the rotary tillage being not less than 20 cm.

[0019] Preferably, the salt separation layer comprises a gravel layer and a straw layer arranged from bottom to top, the thickness of the gravel layer being 8-12 cm, and the thickness of the straw layer being not less than 20 cm.

[0020] Preferably, seedling raising substrate is applied before the planting of the salt-tolerant plants, the thickness of the seedling raising substrate being not less than 5 cm, and then rotary tillage is performed to mix the seedling raising substrate.

[0021] Preferably, the salt-tolerant plants planted are one or more of Lycium ruthenicum Murr., Lycium barbarum L., Kalidium foliatum (Moq.) Bge., Lythrum salicaria L., Iris halophila Pall. and Iris pseudacorus L.

[0022] Preferably, the width of the buffer zone is 2-3 m, the length of the geotextile laid on the buffer zone and embedded in the soil of the lake shore zone is not less than 30 cm, and salt desert plants such as Halocnemum strobilaceum are planted on the buffer zone.

[0023] Preferably, the water inlet ditch, alkali water ditch and water outlet ditch are excavated in soil accumulation of planting ridges, so that the height of the planting ridges is higher than the flood control embankment.

[0024] (Three) beneficial effects

[0025] The present application provides a kind of saline-alkali lake shore zone ecological restoration method.Compared with prior art has the following beneficial effects:

[0026] (1), the present application is by setting alkali water ditch and planting ridge, excavate U-shaped groove on planting ridge, U-shaped groove always stores water, always in the state of irrigation pressure alkali, wash salt time is not less than 2 months, wash away most of salt and alkali, and the residual salt and alkali on planting ridge evaporates in a winter, and the salt layer is accumulated on the surface, and the surface salt layer is removed by spade, effectively reduces the salt content of saline-alkali lake shore zone, and the soil after repair can meet the growth of most salt-tolerant plants.

[0027] (2), the present application is by setting gravel layer and straw layer from bottom to top, salt is separated, salt is removed by drain pipe, soil is separated by setting soil layer, soil loss is prevented, planting layer is laid with desulfurization slag and rotary ploughing, Ca + Ion in desulfurization slag exchanges Na + Ion in soil, and is removed by leaching, reduces soil salt content and conductivity, improves soil aggregate structure, lays matrix and mixes, improves soil organic matter and air permeability, selects screened salt-tolerant plants, improves plant survival rate, and truly realizes the ecological restoration of saline-alkali lake shore zone.

[0028] (3), the present application is by setting buffer zone, and laying geotextile, inserting barbed anchor rod and planting salt claw on buffer zone, to prevent rainwater on the open area from washing away the ecological restoration system, improve the overall stability of the system, and set flood control embankment and arrange stable piles in a row, effectively control lake water backflow, and can also combine with the ditch to use stored rainwater to realize efficient use of water resources. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is a plane arrangement schematic view of the ecological restoration system of the present application;

[0030] Figure 2 It is an A-A section schematic view of the present application;

[0031] Figure 3 It is a section schematic view of the planting ridge of the present application;

[0032] Figure 4 It is a soil particle size distribution graph of the soil before repair in the specific embodiment of the present application;

[0033] Figure 5The soil particle size distribution diagram of the repaired soil in the specific embodiment of the present application.

[0034] In the figure: 1. lake shore zone; 2. water inlet ditch; 3. planting ridge; 31. planting layer; 32. soil separation layer; 33. salt separation layer; 331. straw layer; 332. gravel layer; 333. drainage pipe; 4. alkali water ditch; 5. flood control embankment; 6. stabilizing pile; 7. drainage ditch; 8. regulating gate; 9. buffer zone; 10. anchor rod. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0036] Please refer to Figures 1-3 The embodiment of the present application provides a technical solution: a saline-alkali lake shore zone ecological restoration method, characterized by comprising the following steps:

[0037] S1, constructing an ecological restoration system in the saline-alkali lake shore zone, the ecological restoration system comprising planting ridges 3 for planting salt-tolerant plants and alkali water ditches 4 for discharging salt from the planting ridges 3, the planting ridges 3 being perpendicular to the lake shore line, and the alkali water ditches 4 being arranged between two planting ridges 3; the number of the alkali water ditches 4 and the planting ridges 3 is adjusted according to the actual engineering scale.

[0038] S2, excavating a U-shaped groove on the planting ridge 3 and washing salt in the U-shaped groove by pouring water, the U-shaped groove always containing water and being in a state of pouring water and washing salt at all times, and the water being replenished in time after being consumed, the time of washing salt by pouring water being adjusted according to the salt content, and the time being generally not less than 2 months in areas where the salt content is high and most plants cannot survive. In arid areas where water resources are scarce, especially fresh water resources, in the initial stage of washing salt, the soil salt content is high, and lake water with relatively low salt content can be selected for washing, and when the soil salt content is reduced in the later stage, fresh water can be appropriately used to dilute the washing water to reduce the salt content. Generally, if the salt content of the lake water is lower than 3 ‰, the lake water can be used for washing all the time, or the lake water can be diluted to below 3 ‰ with fresh water, and after washing, the salt content can meet the growth of conventional salt-tolerant plants.

[0039] S3, removing the salt layer on the surface of the U-shaped groove in the second spring season and planting salt-tolerant plants in the groove. After washing and salt accumulation, most of the salt in the planting ridge 3 is discharged, and after the salt accumulation is removed, the remaining salt in the planting ridge 3 is evaporated along the capillary tube with water flow, and a salt layer is formed on the surface. At this time, the surface salt layer is removed by a shovel, and at this time, the soil salt content is low and can meet the growth of most salt-tolerant plants.

[0040] In the embodiment of the present application:

[0041] The ecological restoration system further comprises a water inlet ditch 2 and a drainage ditch 7, the water inlet ditch 2 is located at one end of the planting ridge 3 away from the lake shore, and the drainage ditch 7 is located at one end of the planting ridge 3 close to the lake shore; one end of the drainage ditch 7 is provided with a regulating gate 8, and the side of the drainage ditch 7 close to the lake shore is provided with a flood control embankment 5, and the flood control embankment 5 is arranged in a row and is provided with a stabilizing pile 6.

[0042] In the dry area, rainfall is uneven, and heavy rain often occurs in summer, and the saline-alkali lake shore zone lacks plant root systems to fix soil, so the planting ridge 3 is easily washed away during heavy rain, the water inlet ditch 2 can buffer the rainwater in the open area, the rainwater enters the water inlet ditch 2, is collected into the drainage ditch 7 through the alkali ditch 4, and is then discharged into the lake through the regulating gate 8 on the drainage ditch 7. At the same time, the regulating gate 8 can also prevent the water in the lake from flowing back, when the water level of the lake is high and it is not convenient to drain the water in the drainage ditch 7, water can be pumped outwards. When the rainfall is large, there is more water storage in the ditch, and the original internal water is replaced, so that the salt content of the storage water is low, and after the rainfall ends, the storage water in the ditch can be pumped out to wash salt, thereby improving the utilization rate of water resources.

[0043] In the embodiment of the present application:

[0044] The side of the water inlet ditch 2 away from the planting ridge 3 is further provided with a buffer zone 9, the buffer zone 9 is paved with geotextile, one end of the geotextile extends to the bottom of the water inlet ditch 2, and the other end is embedded in the soil of the lake shore zone 1, and the buffer zone 9 is provided with an inverted anchor rod 10.

[0045] The buffer zone 9 can dissipate the energy of the rainwater, and the buffer zone 9 is preferably in a wave shape, so that the energy dissipation effect is better. The inverted anchor rod 10 is fixed, which can effectively prevent the rainwater from washing away and protect the water inlet ditch 2 from being washed away.

[0046] In the embodiment of the present application:

[0047] The planting ridge 3 comprises a planting layer 31, a soil separation layer 32 and a salt separation layer 33, the planting ridge 3 is constructed by first excavating on the lake shore zone 1, then flattening the bottom after excavation, then filling the salt separation layer 33, which is used to prevent the salt in the lower part from moving upward with water, the salt separation layer 33 is provided with a drainage pipe 333 in the inside, the soil separation layer 32 is paved on the upper part of the salt separation layer 33, the soil separation layer 32 is geotextile, and the planting layer 31 is formed by backfilling the original soil on the upper part of the soil separation layer 32. The salt in the planting layer 32 moves under the action of water infiltration, the soil separation layer 32 is arranged to realize only salt drainage without soil drainage, and the gap of the upper soil filled in the salt separation layer 33 is avoided.

[0048] In the embodiment of the present application:

[0049] After backfilling the planting layer 31, desulfurization slag is applied, the thickness of the desulfurization slag is not less than 1 / 5 of the thickness of the planting layer 31, and then rotary tillage is performed to mix, the rotary tillage depth is not less than 20 cm. + Ion exchange Na in the soil + Ion, and is removed by leaching, reduces the salt content and conductivity of the soil, forms a soil granular structure, avoids compaction, and improves air permeability.

[0050] In the embodiment of the present application:

[0051] The salt isolation layer 33 comprises a gravel layer 332 and a straw layer 331 arranged from bottom to top, the gravel layer 332 is laid with a thickness of 8-12 cm, and the straw layer 331 is laid with a thickness of not less than 20 cm. The gravel layer 332 isolates the upper and lower layers, and the gravel has a large particle size, which avoids the formation of capillary tubes, thereby avoiding the upward migration of salt in the lower soil. The drain pipe 333 is buried in the gravel layer 332, the upper part is provided with the straw layer 331, the gaps between the straws are large, and capillary tubes are also not easy to form, and the straws become organic matter after rotting, which is beneficial to the growth of plants for planting. In the present application, the straw is preferably reed straw, and reed is the most salt-tolerant plant obtained by the research team in the northwest arid area test, and is found in all known salt water / micro-saline water lakes, which is convenient for material procurement.

[0052] In the embodiment of the present application:

[0053] Before planting the salt-tolerant plants, a seedling substrate is applied, the thickness of the application is not less than 5 cm, and then rotary tillage is performed to mix. The seedling substrate can be selected from common commercially available substrates, and is preferably the seedling substrate related to the invention patent with the publication number CN202210474469.3.

[0054] In the embodiment of the present application:

[0055] The planted salt-tolerant plants are one or more of Lycium ruthenicum Murr., Lycium barbarum L., Karelinia caspia, Lythrum salicaria L., Iris pseudacorus L., and the like. These plants are all selected by the team test and can grow in arid saline-alkali soil.

[0056] In the embodiment of the present application:

[0057] The width of the buffer zone 9 is 2-3 m, the length of the geotextile laid on the buffer zone 9 buried in the soil of the lake shore zone 1 is not less than 30 cm, and the salt desert plant salt claw is planted on the buffer zone 9. The buffer zone 9 is arranged and buried in the lake shore zone 1, the dominant desert salt-tolerant plant salt claw is planted in the buffer zone 9, has a high survival rate, and the root system of the salt claw growing in the buffer zone 9 improves the stability of the buffer zone 9.

[0058] In the embodiment of the present application:

[0059] The soil excavated from the water inlet ditch 2, the alkali water ditch 4 and the drainage ditch 7 is accumulated on the planting ridge 3, so that the height of the planting ridge 3 is higher than that of the flood control embankment 5. During excavation, the soil is accumulated on the planting ridge 3, so that the height of the planting ridge 3 is higher than that of the flood control embankment 5, so that even if the lake water flows backward, the planted plants will not be directly submerged, avoiding the death of the plants. At the same time, it should be noted that even if there is no backward flow, when the water level of the lake is higher than the bottom of the ditch, the water in the lake will seep into the ditch. When there is a lot of water, the water needs to be pumped out to make the water depth in the ditch lower than the salt isolation layer 33. Specific embodiments:

[0061] In 2021, a test was carried out on the east lake shore of Taizhongshan wetland in Ningxia. The lake is a typical saline lake in arid areas, and there are almost no plants on the lake shore except salt willow. It can represent the saline lake shore in the northwest arid area.

[0062] The construction method is as follows:

[0063] S1, in 2021, an ecological restoration system was constructed on the saline lake shore in summer. The ecological restoration system includes a water inlet ditch 2, a planting ridge 3, an alkali water ditch 4 and a drainage ditch 7. The planting ridge 3 is perpendicular to the lake shore line. The alkali water ditch 4 is arranged between two planting ridges 3. The water inlet ditch 2 is located at one end of the planting ridge 3 away from the lake shore line. The drainage ditch 7 is located at one end of the planting ridge 3 close to the lake shore line. One end of the drainage ditch 7 is provided with a regulating gate 8. The side of the drainage ditch 7 close to the lake shore line is provided with a flood control embankment 5. The flood control embankment 5 is provided with stable piles 6 arranged in a row. The side of the water inlet ditch 2 away from the planting ridge 3 is provided with a buffer zone 9. Geotextile is laid on the buffer zone 9. One end of the geotextile extends to the bottom of the water inlet ditch 2, and the other end is buried in the soil of the lake shore 1. Inverted anchor rods 10 are inserted into the buffer zone 9. The width of the buffer zone 9 is 2m. The length of the geotextile laid on the buffer zone 9 buried in the soil of the lake shore 1 is 30cm. Salt desert plants salt willow are planted on the buffer zone 9. The planting ridge 3 includes a planting layer 31, a soil isolation layer 32 and a salt isolation layer 33. The planting ridge 3 is excavated on the lake shore 1, and then the salt isolation layer 33 is filled. The salt isolation layer 33 includes a gravel layer 332 and a straw layer 331 arranged from bottom to top. The thickness of the gravel layer 332 is about 10cm. The thickness of the straw layer 331 is about 25cm. The salt isolation layer 33 is provided with a drainage pipe 333. The soil isolation layer 32 is laid on the upper part of the salt isolation layer 33. The soil isolation layer 32 is geotextile. The original soil is backfilled on the upper part of the soil isolation layer 32 to form the planting layer 31. The soil excavated from the water inlet ditch 2, the alkali water ditch 4 and the drainage ditch 7 is accumulated on the planting ridge 3, so that the height of the planting ridge 3 is higher than that of the flood control embankment 5. After backfilling the planting layer 31, desulfurization slag is applied. The thickness of the desulfurization slag is 10cm. The planting layer is 50cm. Then, the soil is mixed uniformly by rotary tillage. The depth of rotary tillage is 25cm.

[0064] S2, excavate a U-shaped groove on the planting ridge 3, and wash salt by irrigating water in the U-shaped groove; the water in the U-shaped groove is always stored during the washing salt by irrigating water, and the water is replenished in time after the water consumption, and the washing salt by irrigating water time is 3 months, and the irrigating water is brackish water lower than 3 ‰.

[0065] S3, in the spring of 2022, the salt layer on the surface of the U-shaped groove is removed, and the seedling substrate is applied, the thickness of the applied seedling substrate is 5 cm, then the rotary tillage is mixed, and the salt-tolerant plants planted include Lycium ruthenicum, Lycium barbarum, Karevika, Iris pseudacorus, and Iris pseudacorus.

[0066] Through the repair of the application, the selected salt-tolerant plants can survive on the planting ridge 3, and the survival rate reaches more than 90%, when the plants are directly planted on the lakeside zone 1 without using the measure, the plant survival rate is almost 0, the repair effect and the plant survival rate are effectively improved. And after the repair, the soil pH is reduced from 8.92 before the repair to 8.71 after the repair, the soil conductivity is reduced from 2002 us / cm to 294.45 us / cm, and the salt content is greatly reduced. Figure 4 For the soil without taking the repair measure, Figure 5 For the soil taking the repair measure, it can be seen that the soil aggregate structure is also obviously improved. With the extension of the repair time limit, the soil aggregate structure will be improved again, and the salt content will be further reduced with plant irrigation, rain washing and plant utilization.

[0067] It should be noted that, in the present text, relational terms such as first and second and the like can only be used to distinguish one entity or operation from another entity or operation, without necessarily requiring or implying any such actual relationship or order between such entities or operations. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover non-exclusive inclusions, so that a process, method, article, or apparatus that comprises a list of elements does not only include those elements, but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0068] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A method for ecological restoration of saline-alkali lake shorelines, characterized in that... Including the following steps: S1. An ecological restoration system is constructed on the shoreline of a saline-alkali lake. The ecological restoration system includes planting ridges (3) and alkaline water ditches (4). The planting ridges (3) are perpendicular to the shoreline, and the alkaline water ditches (4) are set between two planting ridges (3). S2. Dig a U-shaped trough on the planting ridge (3), fill the U-shaped trough with water to wash away the salt, and always keep water in the U-shaped trough when filling the trough with water to wash away the salt. Replenish the water in time after the water is exhausted. The water washing time shall be no less than 2 months. S3. In the spring of the second year, remove the salt layer from the inner surface of the U-shaped trough and plant salt-tolerant plants in the trough. The ecological restoration system also includes an inlet ditch (2) and a drainage ditch (7). The inlet ditch (2) is located at the end of the planting ridge (3) away from the shoreline, and the drainage ditch (7) is located at the end of the planting ridge (3) close to the shoreline. A control gate (8) is provided at one end of the drainage ditch (7), and a flood control dike (5) is provided on the side of the drainage ditch (7) close to the shoreline. Stabilizing piles (6) are arranged in rows on the flood control dike (5). A buffer zone (9) is also provided on the side of the water inlet ditch (2) away from the planting ridge (3). Geotextile is laid on the buffer zone (9). One end of the geotextile extends to the bottom of the water inlet ditch (2) and the other end is buried in the soil of the lake shore zone (1). Barbed anchor rods (10) are inserted on the buffer zone (9). The planting ridge (3) includes a planting layer (31), a soil barrier layer (32), and a salt barrier layer (33). When constructing the planting ridge (3), it is first excavated on the lake shore zone (1), and then the salt barrier layer (33) is filled in to prevent the lower salt from being transported upward with the water. The salt barrier layer (33) is equipped with a drainage pipe (333). The salt barrier layer (33) includes a gravel layer (332) and a straw layer (331) arranged from bottom to top. A soil barrier layer (32) is laid on the top of the salt barrier layer (33). The soil barrier layer (32) is geotextile. The original soil is backfilled on the top of the soil barrier layer (32) to form the planting layer (31).

2. The method for ecological restoration of saline-alkali lake shorelines according to claim 1, characterized in that: After backfilling the planting layer (31), desulfurization slag is spread, and the thickness of the desulfurization slag is not less than 1 / 5 of the thickness of the planting layer (31). Then, it is rotary tilled and mixed, and the depth of rotary tilling is not less than 20cm.

3. The method for ecological restoration of saline-alkali lake shorelines according to claim 1, characterized in that: The thickness of the crushed stone layer (332) is 8-12cm, and the thickness of the straw layer (331) is not less than 20cm.

4. The method for ecological restoration of saline-alkali lake shorelines according to claim 1, characterized in that: Before planting salt-tolerant plants, spread seedling substrate to a thickness of not less than 5 cm, and then till and mix it thoroughly.

5. The method for ecological restoration of saline-alkali lake shorelines according to claim 1, characterized in that: The salt-tolerant plants to be planted are one or more of the following: black goji berry, red goji berry, purslane, loosestrife, iris, and yellow iris.

6. The method for ecological restoration of saline-alkali lake shorelines according to claim 1, characterized in that: The buffer zone (9) is 2-3m wide, and the geotextile laid on the buffer zone (9) is buried in the soil of the lake shore zone (1) for a length of not less than 30cm. The buffer zone (9) is planted with salt desert plant, Salt Claw.

7. The method for ecological restoration of saline-alkali lake shorelines according to claim 1, characterized in that: The soil excavated from the water inlet ditch (2), alkaline water ditch (4) and drainage ditch (7) is piled on the planting ridge (3), so that the height of the planting ridge (3) is higher than that of the flood control dike (5).

Images