Method for repairing hydro-fluctuation belt by means of vegetation

Abstract

The invention discloses a method for repairing a hydro-fluctuation belt by means of vegetation, wherein a temporary intercepting ditch is formed in the top of a slope to prevent water from gathering to impact a slope body when it rains. The temporary intercepting ditch is formed in the slope surface, and therefore impact of heavy rainfall on the slope body can be reduced. According to the method, the influences of water level fluctuating on different vegetation types are fully taken into account, and therefore the plant survival rate is improved. The wetland plant species is enriched, and the wetland biodiversity and the structural stability of an ecological system are improved. A degradable plant fibermesh is laid on the slope body of the riverside slope surface, therefore, washing of rain to the slope body can be effectively buffered, and water and soil and vegetation loss of the slope body can be decreased. After the vegetation grows up to form a stronger root system, the plant fibermesh can be degraded automatically, no pollution can be caused to the environment, and needed organic fertilizer can be provided for plant growth. After the hydro-fluctuation belt is repaired for several years, it is observed that the vegetation grows well, and the water and soil loss and environmental pollution are effectively controlled.

Description

technical field [0001] The invention belongs to the field of water body protection, and in particular relates to a method for artificially repairing a water-fluctuation zone. Background technique [0002] The quality of the vegetation in the water-fluctuation zone is an important indicator of the healthy operation of the reservoir and plays an important role in the reservoir ecosystem. However, due to reservoir adjustment and storage operation and natural conditions, the water level of the reservoir frequently fluctuates greatly and the submersion time is too long, and the vegetation on the edge of the reservoir is easily damaged, especially in some areas with steep slopes, rapid water flow and poor soil. Vegetation may be submerged and disappeared, which means that the reservoir area has lost an ecological barrier, and various ecological and environmental problems such as increased pollution, increased soil erosion, and frequent geological disasters will appear in the wate...

AI Technical Summary

Problems solved by technology

However, due to reservoir adjustment and storage operation and natural conditions, the water level of the reservoir frequently fluctuates greatly and the submersion time is too long, and the vegetation on the edge of the reservoir is easily damaged, especially in some areas with steep slopes, rapid water flow and poor soil. Vegetation may be submerged and disappeared, which means that the reservoir area has lost an ecological barrier, and various ecological and environmental problems such as increased pollution, increased soil erosion, and frequent geological disasters will appear in the water-fluctuation zone, which threatens the safety of the water quality of the reservoir and the reservoir area. Virtuous circle of ecosystem

[0003] At present, there is such a problem that the soil in the water-fluctuating zone is vulnerable to water erosion, the basic conditions for plant growth are constantly being destroyed, and it is difficult to form a biological community.

The soil matrix in the hydrofluctuation zone usually has high gravel content and strong sandiness, and the water retention capacity of the matrix is ​​extremely limited. After the water recedes, water leakage is serious, resulting in frequent droughts in the terrain, which greatly affects the survival and growth of plants.

Wetland planting species are relatively single, and the planting methods have not been standardized and efficiently managed. The optimal allocation of ecological components of aquatic plants is insufficient, and various organisms have not formed a complex with reasonable structure and high efficiency.

[0004] The planting of plants in the water-fluctuation zone is monotonous, and it is difficult to form a plant community. In the season of heavy rainfall, the rain will cause great damage to the slope, which will easily lead to soil erosion and the washing of the planted plants into the seawater.