In my opinion, by studying the concept characteristics, succession, formation mechanism, classification and distribution of communities, community ecology can fully understand the community structure and species diversity, and profoundly grasp the main types and distribution laws of biological communities, which is conducive to species protection, scientific division of nature reserves, development and utilization of ecological resources, protection and construction of ecological environment, and healthy and sustainable development of economy and society. Personal opinion, for reference only, I hope I can help you.