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Construction method suitable for ecologically restoring vegetation of riparian zone of sand excavation riverway in north

A technology for ecological restoration and construction methods, applied in chemical instruments and methods, sustainable biological treatment, biological water/sewage treatment, etc., to achieve the effect of quick effect, small investment and easy management

Inactive Publication Date: 2015-04-01
SHENYANG INST OF APPLIED ECOLOGY - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It is not suitable for the vegetation restoration of riverbanks in the cold northern regions of my country.

Method used

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  • Construction method suitable for ecologically restoring vegetation of riparian zone of sand excavation riverway in north

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] For the test site, the inflow channel of the Hun River in Fushun City, Liaoning Province was selected, and the specific restoration methods are as follows:

[0028] Vegetation in the riparian zone, survey of background value of water and soil: The riparian zone of this river section has been seriously damaged by sand mining, and the main threat to the water body is agricultural non-point source pollution. The nitrogen and phosphorus content in the river water quality and soil both exceed the standard.

[0029] Selection of suitable plants in the riparian zone; mainly local species, and control the use of exotic species; ecological adaptability: cold resistance, barren resistance, drought tolerance, developed root system, and strong water and soil conservation capabilities are several requirements that all plants should meet. Landscape diversity: When choosing plants, attention should be paid to the combination of diversity. Aesthetic features: The aesthetics of stems, l...

Embodiment 2

[0033] In the test site, the potential ecological hazard of heavy metals is relatively large, and the specific restoration methods are as follows:

[0034] Vegetation in the riparian zone, investigation of water and soil background value: the riparian zone of this river section is affected by mining, and heavy metals are deposited in the soil; Cd, as a highly toxic pollution element, has an average content of 0.24 mg / kg, which is twice the background value of soil in Liaoning Province . After the sand mining is destroyed, heavy metals such as Cd in the soil will enter the water body with the sand mining, and the potential ecological harm of heavy metals is relatively large.

[0035] Screening of suitable plants in the riparian zone: while taking into account the screening method in Example 1, the tolerance of plants to heavy metals and their ability to absorb heavy metals should also be considered.

[0036] The collocation planting species for nearshore shallow water area and...

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Abstract

The invention relates to the technical field of ecological engineering, and in particular relates to a construction method suitable for ecologically restoring vegetation of a riparian zone of a sand excavation riverway in north. According to investigation of water and soil background value of the riparian zone of the sand excavation riverway in the north, aquatic (humidogene) and woody plants suitable for local environment and growth are screened out, the aquatic plants are planted in a diving zone close to riparian and sloping bank, humidogene and woody plants are planted in flood land formed by sand extraction, and then the purpose of restoring destroyed vegetation of the riparian zone is achieved. By adopting the method, the problem that the vegetation is destroyed seriously because the water quality is reduced and the self cleaning capacity is weak after river sand extraction is effectively solved, and an effective measure is provided for restoring the vegetation of the riparian zone.

Description

technical field [0001] The invention relates to the technical field of ecological engineering, in particular to a construction method suitable for ecologically restoring vegetation in the riparian zone of a sand mining river in the north. Background technique [0002] The riparian zone is the ecological transition zone between the terrestrial ecosystem and the aquatic ecosystem. It is a variety of plant belts built along the banks of lakes, streams and valleys. Its main purpose is to keep the water clean and intercept and filter sediment that may enter rivers and reservoirs. Organic matter, pesticides and other harmful substances. Plants in the riparian zone Plants play an important role. The physiological functions of plants are not only beneficial to the removal of pollutants, but also the interception of plants can effectively slow down the flow rate of runoff and protect the river bank. Research and practice have proved that the coastal buffer zone can effectively inter...

Claims

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Application Information

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IPC IPC(8): C02F3/32
CPCC02F3/32C02F2101/105C02F2101/16C02F2101/20C02F2103/007Y02W10/10
Inventor 于帅陈玮何兴元刘周莉姜鎏鹏
Owner SHENYANG INST OF APPLIED ECOLOGY - CHINESE ACAD OF SCI
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