A method for establishing standards of
habitat suitability includes the steps: firstly, determining typical
fish species needing to be researched and life stages of the typical
fish species in a researched river reach, researching the life stages and life habits of key species, performing unit division for the researched river reach and acquiring river reach
habitat data; secondly, by means of a multiple
linear regression method, respectively establishing
habitat suitability functions represented by habitat variables and the
habitat suitability represented by species response, and obtaining the relation between the species response and the habitat variables by combining the
habitat suitability functions and the
habitat suitability; and finally, solving regression coefficients of the species corresponding to a habitat variable relational expression by means of a least square method, and obtaining the habitat suitability standards established by means of the multiple
linear regression method. The method can take interaction among the habitat variables into consideration, and determines response of the species by means of accumulative effects of multiple environmental characteristics, so that simulated results are more reasonable.