A Method for Allocation of Vegetation Community in Riparian Zone of Northern Mountainous Watershed Conducive to N and P Ecological Regulation

Abstract

The invention belongs to the field of river regulation engineering, and particularly relates to a method for configuring vegetation communities in riparian zones of northern mountainous basins that is beneficial to nitrogen and phosphorus ecological regulation, including strengthening the construction of nitrogen and phosphorus removal areas, the construction of buffer zones, and the construction of soil nutrient areas; Aquatic or wet plants are planted in the wading and interlaced areas of the nitrogen and phosphorus removal area, and herbs, shrubs and trees are planted in the far water area, and the "pin"-shaped construction scheme is adopted to effectively remove nitrogen and phosphorus pollutants by reasonable dense planting; the buffer zone Plant 5-10m herbaceous plants; adjust the soil nutrient zone to plant and maintain soil nutrient species according to the actual situation of the soil. The configuration plan fully considers the pollutant purification ability of plants, the ability to maintain soil moisture and nutrients, and the suitability of native species to the climate. The invention can effectively remove the nitrogen and phosphorus pollutants in surface runoff, reduce the nitrogen and phosphorus pollutants entering rivers, purify river water, improve the nutrient self-protection ability of the ecosystem, and stabilize the structure of the ecosystem.

Description

technical field [0001] The invention belongs to the field of river regulation engineering, and in particular relates to a method for configuring vegetation communities in riparian zones of northern mountainous river basins, which is beneficial to N and P ecological regulation. Background technique [0002] With the continuous development of social economy, the shortage of water resources and the pollution of water bodies have become global issues of common concern to mankind. Water environmental problems are largely related to the cycle of nitrogen, phosphorus and other elements. The input of N and P causes eutrophication of water body and causes a series of environmental problems such as deterioration of water quality. The fundamental way to solve this problem is to reduce the input of external pollution. The riparian buffer zone is an effective barrier to reduce N and P pollution entering the river. Plants and soils in the riparian zone are an important part of the pollu...

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Problems solved by technology

Especially in Northeast China, its unique climate environment, low winter temperature and long duration, most plants are in a dormant state, which reduces the purification effect of vegetation on pollutants, so that the study of vegetation configuration in the buffer zone of river banks in the northern region is neglected.

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