The study on living‐suitable index and spatial distribution of grasshopper

摘要

@@ Introduction In recent years,Grasshoppers did increasingly serious harm to grassland with a speed of above 1.5 hundred million acre per year, resulting in degradation of large area of grassland and decreased yield of grass. In order to control grasshoppers effectively and forecast the occurrence of Grasshoppers,we must clarify the relationship between their occurrence and ecological environment first.