What impacts may land reclamation have on the natural environment?

1. Bring red tides

The land reclamation will reduce the tidal range of seawater, reduce the scouring capacity of tides, reduce the amount of tide received in the harbor, and the self-purification capacity of seawater will also weaken. As a result, water quality is deteriorating day by day. In addition, land reclamation from the sea is mainly used for urban construction and industrial and agricultural production. There are many kinds of pollutants, and the probability of causing red tides has also greatly increased.

2. Destruction of mangroves

In the past 40 years, the area of ??mangroves in my country has dropped sharply from 48,300 hectares to 15,100 hectares, mostly due to land reclamation. In exchange for the destruction of mangrove resources, the sharp decline in mangrove resources has resulted in the deterioration of the coastal ecological environment, increasingly serious coastal land erosion, and the reduction of forest areas and offshore fishery resources.

3. Destroy the ecological balance

Unreasonable land reclamation destroys the natural coastal landscape environment, destroys the marine biological chain, causes a sharp decline in marine life, and causes ecological environment and socio-economic problems. , the natural environment of many bays has been changed due to unreasonable land reclamation activities, seriously damaging the ecological environment of their habitats.

Extended information:

Methods of sea reclamation and land reclamation

In the sea reclamation and land reclamation project, it is indispensable to apply modern high-precision measurement technology. Simply put, real-time RTK (Real-Time Kinematie) is composed of three parts: GPS signal receiver, data real-time system and real-time data processing system.

In RTK working mode, the GPS receiver of the base station is placed at a point with precise coordinates, and its observation values ??and station coordinate information are transmitted to the rover in a dedicated data format through the data link. The rover Receive data from reference stations through data links and collect GPS observation data.

The differential observation values ??are formed in the system for real-time processing, and the three-dimensional positioning results of the station in the specified coordinate system are instantly provided, and the measurement accuracy is accurate to the centimeter level.

Reference: Baidu Encyclopedia-Reclamation from the Sea