Reservoir opening forest wetland construction method for pollutant interception and water quality purification

Abstract

The invention discloses a reservoir opening forest wetland construction method for pollutant interception and water quality purification and belongs to the technical field of non-point source pollution control and ecological engineering. The method comprises the following steps: 1) arrangement of plants, namely selecting seeds of trees suitable for local growth in a manner of adjusting measures tolocal conditions, and selecting the seeds of trees in different regions according to ground elevation partition by virtue of topography and landforms in a catchment area of the reservoir; 2) wetlandconstruction, namely selecting high-quality nursery stock growing strongly in an appropriate planting season, and sequentially performing partitioned planting from a higher elevation to a lower elevation according to moisture resistance of the plants; and 3) operating management, namely loosening the soil and weeding before afforestation, removing non-target seeds of trees, performing intermediatecutting and pruning remained trees; and performing water-fertilizer management, nursery stock protection, young tree management and pest control after planting. The reservoir opening forest wetland construction method for pollutant interception and water quality purification is reasonable in design. According to the method, the reservoir opening forest wetland is constructed, the pollutants are intercepted, the reservoir water environment is protected, and non-point source pollution in the catchment area is effectively controlled.

Description

technical field [0001] The invention belongs to the technical fields of prevention and control of non-point source pollution and ecological engineering, and in particular relates to a method for constructing a Kukou forest wetland for pollutant interception and water purification. Background technique [0002] Agricultural non-point source pollution (including rural domestic pollution, the same below), mainly refers to the pollution caused by chemical fertilizers and pesticides used in agricultural production, livestock and poultry breeding, aquaculture, and agricultural film, crop straw, human excrement and urine, rural Pollution caused by domestic sewage, domestic garbage, etc. [0003] Agricultural non-point source pollution is a serious hazard to environmental quality and human health, mainly manifested in: [0004] (1) It affects the quality of agricultural products and drinking water, and endangers human health. Due to the excessive and irrational application of chem...

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Problems solved by technology

[0004] (1) Affect the quality of agricultural products and drinking water, and endanger human health

Due to the excessive and irrational application of chemical fertilizers and pesticides, sewage irrigation and the use of waste in agriculture, the quality of agricultural products has declined; the loss of chemical fertilizers and pesticides and the discharge of waste pollute drinking water sources, posing a threat to human health

[0005] (2) Pollution of rivers and lakes and damage to ecosystems

[0006] (3) Destruction of soil structure and the resulting decline in agricultural production capacity

Excessive and unreasonable application of chemical fertilizers and pesticides pollutes the soil, destroys the physical and chemical structure of the soil and micro-ecological structure, and reduces the productivity of the soil; the residue of pesticides will also reduce the quality of agricultural products. Necessary increase, thereby reducing the competitiveness of Chinese agricultural products in the international market, ultimately leading to loss of farmers' income

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