Characteristics and causes of population distribution in Canada?

The reason why it is mainly concentrated in the eastern part of the country

Canada has a Nordic continental climate, with a long winter period (December to March), a cold climate, and a short summer period (7 , August), while rainfall is concentrated in spring (April, May, June). Vancouver, which has the largest Chinese population, is the city with the warmest winters in Canada. The average temperature in January, the coldest, is 3°C, and the average temperature in July is 17°C. It is basically spring-like all year round; the average temperature in Toronto in January is The temperature is -6.7℃, and it is 20.5℃ in July; Ottawa's annual average temperature is 5.7℃, ranking fifth among the capital cities with the lowest average temperature in the world, and its annual absolute minimum temperature is -36℃, making it the third capital city with the lowest absolute temperature in the world. But because the weather is dry, I don't feel particularly cold. The temperature gets lower as you go north.