By region, the number of insects in the reference site is as high as 96%. There are 50 species of all insects, because this area is a spacious open-air area and a flowing water area, with various habitats (micro-habitats). The sampling area is a coastal area, with leaves, branches, underwater plants and floating plants. The water area is sandy, with small to large gravel, which pollutes each other. Insects are found at a distance where larvae live in clean water sources, and their water quality is good, while carnivorous mammals (usually, There are 50 species in all aquatic insects. Because this area is a spacious open area and a slow-flowing water area, the diversity of habitats (micro-habitats) is relatively small, and most areas are similar. There are leaf residues on the coast where the sampling point is located, and underwater plants and floating plants are nowhere to be seen. In this area, the bottom of the water is sandy soil, plant residues and pebbles, most of which are found in Odonata, accounting for 2%. 52 (Table 1)
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