Assessment of Ecological Environment Pressure and Detection of Key Points for Mariculture in Beibu Gulf of Guangxi

Abstract

Taking Guangxi Beibu Gulf mariculture area as an example, the fuzzy mathematics grey statistics and entropy weight TOPSIS method were used to establish the ecological environment pressure evaluation system of Guangxi Beibu Gulf mariculture, and the Arc GIS software was used to quantitatively evaluate the ecological environment of Guangxi Beibu Gulf mariculture. The results showed as follows: 1) the ecological environmental stress of mariculture was affected by the culture mode and species; 2) The ecological environment pressure of subgrade pond culture mode was the highest, the ecological pressure of shallow sea culture mode was the lowest, and the ecological pressure of shallow sea raft culture \ cage culture mode was in the middle; 3) The pressure on the ecological environment caused by the bottom sowing breeding mode in the beach was evenly distributed throughout the year, and there was no critical period. Pearl Bay was the area with the greatest pressure distribution, which was the key point of the pressure of aquaculture on the ecological environment; The distribution area of secondary pressure from Maowei and Hehe Bay to Wulei was the secondary key point of the pressure of breeding on the ecological environment. Xicun to Bintang were the third-level pressure distribution areas and key points.

Keywords

• mariculture
• ecological environment pressure
• quantitative evaluation