Method for protecting castor fiber cave

Abstract

The invention discloses a method for protecting a castor fiber cave. A castor fiber nest comprises an underwater outlet an onshore inlet and outlet, and a bionic dam; the bionic dam is built on a river channel close to the castor fiber nest according to surrounding topographic lines, and a still water area is formed on the upstream of the bionic dam; dead wood branches and soil are arranged on thebionic dam, so river water bypasses the arc-shaped bionic dam, and the castor fiber nest is prevented from being impacted; and the length of the bionic dam is determined according to the size of thecastor fiber nest, the width of the bionic dam is larger than or equal to 1.5 m, the height of the bionic dam is 0.5-1.0 m lower than the water surface of the river water, the height of the dead woodbranches is 0.5-1.0 m higher than the water surface of the river water, and the dead wood branches are covered with the soil. According to the ,method, the stability of water level can be guaranteed,a stable aquatic ecological environment for protecting a castor fiber channel and the castor fiber cave is created, the still water area is formed after the bionic dam is built, the castor fiber nestis prevented from being washed away by excessively large and rapid water flow, and damage to the ecological environment due to the fact that castor fibers bite trees excessively to build a dam body isavoided.

Description

technical field [0001] The present invention relates to beaver protection, in particular to a method for protecting beaver burrows. Background technique [0002] Beaver (Castor fiber): Mammalian rodent, a species of Beaver family and Beaver genus, with a total of 7 subspecies, is the largest medium-sized amphibian in the rodent order. For the "World Conservation Union" (IUCN) 2008 red list of endangered species, belonging to the national first-class protected animals. [0003] The beaver is large in size, with no obvious difference between males and females. The body is covered with long and thick needle-like hairs and dense and soft down hairs. The needle hairs are yellow-brown, and the base and down are brown-gray. The adult back is brown, and the head and abdomen are brown. shallower than the back. The beaver has a short and blunt head, small eyes, short neck, sharp incisors, well-developed masseter muscles, short and wide limbs, short forelimbs, small feet, strong claw...

AI Technical Summary

Problems solved by technology

The establishment of dams and hydropower stations has led to the reduction of vegetation inundation in the area, resulting in soil erosion, riverbed subsidence, local diversion of rivers, and destruction of beaver caves

The migration route of beavers is blocked. In winter, due to water storage and power generation, the ice layer continues to rise, and the water even submerges the beaver caves, leading to the death of beavers in winter because they cannot settle down

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