Method for constructing buffer zone used for preventing and controlling agricultural non-point source pollution

Abstract

The invention discloses a method for constructing a buffer zone used for preventing and controlling agricultural non-point source pollution. The method comprises the following steps: dividing a riverbank buffer zone into a blocking area and a vegetation area; digging a transition pit with a width of 15-18 m and a slope body inclination angle of less than 30 degrees so as to form the blocking area; planting a plurality of shrubs and herbaceous plants in the slope body, close to a farmland, of the blocking area so as to form a first blocking zone; planting a plurality of arbors, a plurality ofshrubs and herbaceous plants in the flat ground area of the blocking area so as to form a second blocking zone; planting a plurality of shrubs and herbaceous plants on the slope body, close to a riverchannel, of the blocking area so as to form a third blocking zone; and planting a plurality of shrubs and herbaceous plants in the vegetation area close to the river channel, wherein the distance between every two shrubs is 1 m, and the plant height of the shrubs is 1-1.5 m. The method provided by the invention can effectively prevent and control flood of a river in summer from impacting the farmland, and prevents pollutants in rainfall runoff / seepage of the farmland from polluting the river.

Description

technical field [0001] The invention relates to the field of ecology and environmental protection, in particular to a method for constructing a buffer zone for preventing and controlling agricultural non-point source pollution. Background technique [0002] With the rapid development of social economy and urbanization level, the water ecosystem has been severely tested. The riparian buffer zone is an ecological transition zone between the river and the land. Its special geographical location determines that it has ecological functions such as preventing and controlling non-point source pollution, intercepting and stagnating pollution, and creating riverside landscapes. [0003] The riparian plant community, as the main body of the riparian buffer zone, plays a decisive role in preventing and controlling agricultural non-point source pollution. However, due to the impact of human activities, the damage and degradation of riparian plant communities and ecosystems are very ser...

AI Technical Summary

Problems solved by technology

However, due to the impact of human activities, the damage and degradation of riparian plant communities and ecosystems are very serious, and the water pollution caused by agricultural non-point source pollution is also becoming more and more prominent.

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