Answer: It is not realistic to write it down completely, but I can give you a main idea.

1. Location: long coastline, few offshore islands and insufficient coastal defense depth; The mainland has a long border, and many countries around it are unstable, especially Afghanistan and Kashmir in the west and India, Myanmar and Thailand in the southwest.

2. Topography: The southeast coastal plain area is not conducive to the use of natural barriers; Northern mountains and deserts are more favorable.

3. Climate: There is a big difference between cold and heat in north and south, and water vapor in east and west. In the deployment of national defense, it is necessary to rationally deploy troops according to geographical and climatic conditions. Most soldiers in the south are not cold-tolerant, and most soldiers in the north are not good at water.

4. Geology and geomorphology: The development of transportation is conducive to the transportation of troops and logistics materials, but geographical conditions must be considered in the construction, such as the construction of Qinghai-Tibet Plateau railway, the depth of frozen soil, the days when the daily average temperature is greater than 0 degrees, strong sunshine conditions and various factors of wildlife migration.

5. Other aspects

6. Summary

I graduated from Northeast Normal University with a master's degree in geography, and "explaining national security from a geographical perspective" is a big proposition. As the focus of the above discussion, I should be able to achieve my goal for papers that are not too demanding.

I hope it helps you!

Personal statement: I am HK-Honest King-Honest King, not the English abbreviation of Hong Kong, please remember. ...