A Fish Habitat Classification Method Based on Hydrodynamic Conditions

Abstract

The invention discloses a fish habitat dividing method based on a hydrodynamic force condition. The fish habitat dividing method comprises the following steps of (1) determining a fish habitat dividing boundary range; (2) determining characteristic fish and hydrodynamic force characterization factors; (3) distinguishing fish habitats; (4) classifying the fish habitats; (5) classifying protection measures of the fish habitats; and (6) performing quantitative assessment on the protection of the fish habitats. Based on condition requirements of two types of hydrodynamic force characterization factors such as water current motion indexes, and water current energy indexes, and according to dividing principles that fish habitat protection ranges are partitioned, protection degree is graded, and protection contents are classified, repairing, dispatching and research and development work requirements of river fish habitats are planned and deployed at the source, the protection theory and the technical research system of the river fish habitats in China are filled and perfected, and the win-win of social benefits, economic benefits and environment benefits is realized.

Description

technical field [0001] The invention belongs to the technical field of fish management, and in particular relates to a fish habitat division method based on hydrodynamic conditions. Background technique [0002] Habitat usually refers to the region or environment type in which a certain organism or an ecological group lives and reproduces. In a broad sense, the concept of habitat not only includes the living space of organisms, but also includes all environmental factors in the living space. For fish, its habitat refers to the place where it maintains its normal life, growth, foraging, reproduction and other life cycles, including the range of waters necessary for fish to complete the entire life cycle process, such as spawning grounds, ropes, etc. Bait grounds, overwintering grounds, and migration passages connecting waters of different life history stages, etc. Fish habitats not only provide the living space for fish, but also provide all environmental factors for fish sur...

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Problems solved by technology

At present, most of the protection, restoration, compensation and scientific research of river fish habitats in my country are in the stage of research, conception and design. The research theory and technology system of land protection is still not systematic, and the technology suitable for my country's river reality and national conditions is mature, the protection effect is good, and the examples that are easy to operate and implement are lacking, and the practical guidance for engineering is limited. There is still a gap in technical methods, and it is difficult to achieve an effective unity and balance of environmental benefits, economic benefits, and social benefits

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