Device and method for acoustic repelling and protection of Neophocaena asiaeorientalis asiaeorientalis away from construction water zone

Abstract

The invention relates to technologies of wild animal protection, in particular to a device and method for acoustic repelling and protection of Neophocaena asiaeorientalis asiaeorientalis away from a construction water zone. The method comprises the following steps: (1) fixing acoustic repelling instruments in the water zone near a construction site at certain intervals, wherein the depth of the arranged positions is a half of the water depth; and (2) sending sound signals which can be changed randomly within a certain range automatically and continuously through the acoustic repelling instruments so as to drive the Neophocaena asiaeorientalis asiaeorientalis away from the construction water zone. According to the method, through measurement of echolocation signals of Neophocaena asiaeorientalis asiaeorientalis, measurement of the hearing ability of wild Neophocaena asiaeorientalis asiaeorientalis microcommunities, measurement of underwater background noise of natural habitats of Neophocaena asiaeorientalis asiaeorientalis and measurement of underwater noise of construction projects, the method for acoustic repelling and protection of Neophocaena asiaeorientalis asiaeorientalis awayfrom the construction water zone is obtained, and the method can be applied to effective repelling and protection of Neophocaena asiaeorientalis asiaeorientalis away from the engineering constructionwater zone, so that accidental injury and accidental killing of Neophocaena asiaeorientalis asiaeorientalis are avoided by engineering construction activities involving water.

Description

technical field [0001] The invention belongs to the technical field of wild animal protection, and in particular relates to a device and method for driving and protecting the sound of Yangtze finless porpoise in construction waters. Background technique [0002] The Yangtze finless porpoise (Neophocaena asiaeorientalis asiaeorientalis) is a second-class national key protected wild animal, known as the "Smiling Angel of the Yangtze River". The Yangtze finless porpoise is only distributed in the main stream of the middle and lower reaches of the Yangtze River in my country, Dongting Lake, Poyang Lake and some tributaries. The natural hydrological environment and its changes in these waters, the distribution and changes of small fish resources, the spatial characteristics of the waters and the underwater acoustic environment, etc. Has a unique adaptability. With the increase of people's development and utilization of resources, incidents involving the distribution of Yangtze fi...

AI Technical Summary

Problems solved by technology

The underwater noise generated by ships sailing in the construction area also has a great impact on the target echo recognition during the sonar detection process of the Yangtze finless porpoise. Strong noise usually produces acoustic masking, which affects the normal vocalization and hearing of the Yangtze finless porpoise, causing the Yangtze finless porpoise to Unable to accurately locate the target, it is easy to be injured or killed by the high-speed propeller of the ship

Although the protection of the Yangtze finless porpoise has been paid more and more attention by people in recent years, due to the relatively limited understanding of the bioacoustic characteristics of the Yangtze finless porpoise, a aquatic mammal, in the actual protection process, the particularity of the water environment also makes people It is not possible to directly set up isolation areas for protection like the protection of terrestrial animals, so incidents of Yangtze finless porpoises straying into construction waters and causing casualties happen from time to time

Images