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Method for building cold region riparian buffer strip stopping and controlling agricultural non-point source pollution

A technology for agricultural non-point source pollution and cold areas is applied in the field of building a river bank buffer zone in the cold area of ​​agricultural non-point source pollution. The effect of infiltration and control of agricultural non-point source pollution

Inactive Publication Date: 2015-08-05
SHENYANG UNIV
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  • Method for building cold region riparian buffer strip stopping and controlling agricultural non-point source pollution

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Embodiment 1

[0019] This embodiment 1 is implemented under the following implementation conditions and technical requirements:

[0020] A 30-meter-wide riparian vegetation buffer zone is constructed in the river section of the Liaohe Protection Zone of Shuang’anqiao in Tieling City, which is divided into three parts: a gentle slope area near farmland, an intermediate ecological barrier area and a vegetation area near the river.

[0021] The part of the farmland connected with the river bank is built into a slope with a width of 2 meters and an inclination angle of 20°-25° near the gentle slope of the farmland. The planting vegetation is shrub black locust, the row spacing is 1.2 meters, the plant spacing is 1.5 meters, and the weeds that grow naturally on the slope form a shrub-grass barrier zone.

[0022] A 5-meter-wide ecological barrier area is set below the gentle slope area near the farmland, which is composed of a vegetation planting zone and a biochar adsorption zone. The vegetation plant...

Embodiment 2

[0027] This embodiment 2 is implemented under the following implementation conditions and technical requirements:

[0028] A 20-meter-wide riparian vegetation buffer zone is constructed in the river section of the Liaohe Protection Zone in Yinzhou District, Tieling City, which is divided into three parts: the gentle slope area near the farmland, the middle ecological barrier area and the vegetation area near the river.

[0029] The part connecting the farmland and the river bank is built into a slope area with a width of 3 meters and an inclination angle of 15°-20° near the gentle slope of the farmland. The planting vegetation is shrub black locust, the row spacing is 1.2 meters, the plant spacing is 1.5 meters, and the weeds that grow naturally on the slope form a shrub-grass barrier zone.

[0030] A 4-meter-wide ecological barrier area is set below the gentle slope area near the farmland, and the barrier area is composed of a vegetation planting zone and a biochar adsorption zone. ...

Embodiment 3

[0035] This embodiment 3 is implemented under the following implementation conditions and technical requirements:

[0036] Build an 18-meter-wide riparian vegetation buffer zone in the Shifosi section of the Liaohe River Reserve, which is divided into three parts: a gentle slope area near the farmland, an intermediate ecological barrier area, and a vegetation area near the river.

[0037] The part of the farmland connected with the river bank is built into a slope with a width of 2.5 meters and an inclination angle of 25°-30° near the gentle slope of the farmland. The planting vegetation is shrub black locust, the row spacing is 1.2 meters, the plant spacing is 1.5 meters, and the weeds that grow naturally on the slope form a shrub-grass barrier zone.

[0038] A 4.5-meter-wide ecological barrier is set below the gentle slope area near the farmland. The barrier is composed of a vegetation planting zone and a biochar adsorption zone. The vegetation planting mode in the intermediate ec...

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Abstract

The invention discloses a method for building a cold region riparian buffer strip stopping and controlling agricultural non-point source pollution, and relates to an ecological and environmental protection method. According to the method, three different natural vegetation barrier strips are built from a farmland to a river channel, leguminous plant locust and natural grass land vegetation are combined in a gentle slope area, infiltration of farmland runoff can be effectively stopped and controlled, nutrient elements such as nitrogen and phosphorus can be fixedly adsorbed by the aid of plant rhizosphere, the farmland runoff enters an ecological barrier area provided with an arbor-shrub-grass vegetation belt and a biological carbon adsorption belt, rainfall runoff can be remarkably intercepted, absorbed and transformed, and the biological carbon adsorption belt effectively adsorbs pollutants in snowmelt runoff during spring thawing of winter snow and can be absorbed, transformed or degraded by plants and rhizospheric microorganisms after winter dormant period. Agricultural non-point source pollution can be further stopped and controlled, and flood prevention and discharge functions of the riparian buffer strip cannot be affected.

Description

Technical field [0001] The invention relates to a method for ecology and environmental protection, in particular to a method for constructing a river bank buffer zone to prevent agricultural non-point source pollution in cold regions. Background technique [0002] With the rapid development of social economy and urbanization, the water ecosystem has been severely tested. Water pollution is generally divided into two types: point source pollution and non-point source pollution. Point source pollution refers to the pollutants produced through centralized sewage discharge in the process of industrial production and urban life. This kind of pollution source is relatively concentrated, and the discharge route is clear. Non-point source pollution refers to the water pollution caused by surface runoff produced in the process of precipitation, melting ice and snow, and irrigation. After leaching and scouring, it carries natural or man-made pollutants and finally enters the receiving ...

Claims

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Application Information

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IPC IPC(8): C02F3/32C02F3/00
CPCY02W10/10
Inventor 张鸿龄马国峰孙丽娜
Owner SHENYANG UNIV
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