Ecological system construction method of rain source type river

Abstract

The invention provides a rain source type river ecosystem construction method, which comprises the following steps that (1) a bypass river channel system is constructed beside an original river channel, the bypass river channel system comprises a water area and a land area, a transition zone is arranged between the water area and the land area, and the water area is divided into an upper section and a lower section according to the length ratio of (4-6): 1; (2) planting potamogeton malabaricum on the upper section of the water area, and planting ottelia acuminata on the lower section of the water area; cattail is planted in the transition zone; planting syzygium jambos and oxalis corniculata in the land area; (3) in a dry season, water flow is concentrated into the bypass riverway system, and the riverway cross section of the bypass riverway system is adjusted according to the water flow; in rainy seasons, water flow is directly drained through the original river channel. After the ecological system is constructed for treatment, the self-purification capacity of the river is effectively improved, the water quality improvement effect is good, the survival rate of potamogeton malabaricus, ottelia acuminata, typha orientalis, phyllostachys nigra and oxalis corniculata in the ecological system is high, and the good ecological system of the river channel can be maintained for a long time.

Description

technical field [0001] The invention relates to the field of ecosystem construction, in particular to an ecosystem construction method for a rain source type river. Background technique [0002] Rainfall-type rivers are one of the important types of urban rivers, usually referring to small rivers in urban areas. The water supply of such rivers mainly comes from surface runoff brought by rainfall, domestic sewage and tail water from sewage treatment plants. Most of the urban rivers in my country's Hainan, Shenzhen, Qingdao and other countries and regions are rain source rivers. Rain-source-type urban inland rivers have the characteristics of both rain-source type and urban inland rivers, which make rain-source-type urban inland rivers have problems such as small environmental capacity, ecological fragility, deterioration of water quality, and poor ability to regulate and accumulate water. Therefore, a method is urgently needed to improve the rain-sourced river ecosystem and ...

AI Technical Summary

Problems solved by technology

However, the construction of the ecosystem often requires a large economic cost, and the maintenance cost is high, which is not conducive to the long-term maintenance of the rain source river ecosystem.