Extraction of suitable grasshopper areas and analysis of main influencing factors in Hulunbuir grassland
Hulunbuir grassland is an important animal husbandry production base in northeast China.Accu-rate monitoring of pest species in the grassland is of great significance to the ecological security of the grassland and the stable development of animal husbandry.By fusing multi-source information data,the Maxent model was used to extract potential locust occurrence areas in Hulunbuir City in 2022.The results showed that the potential grasshopper occurrence areas were mainly concentrated in the western grassland area of Hulunbuir,and the mod-erate and highly suitable areas were relatively high.In the eastern steppe,grasshopper occurrence areas accoun-ted for a small proportion,and the areas of low suitability were mainly dominated,while the areas of moderate and high suitability were small.The vegetation index in the incubation and spawning periods had a strong indica-tor effect on the fitness index of grasshoppers.In particular,the vegetation index in June 2022 played a decisive role in the fitness index of locusts,while the vegetation index in the moderate and highly suitable areas was low-er.In addition,locusts choose their habitat according to their preferred vegetation and soil type.
万方数据
维普
