"Climate" China's natural environment PPT courseware 5

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"Climate" China's natural environment PPT courseware 5

According to Figure 2.13, the distribution of average temperature in China in January. answer the questions:

1) Based on the legend, how does the temperature in my country change gradually in January? (color)

Decreasing from south to north

2) Find the 0°C isotherm and observe which terrain areas, rivers, etc. it passes through? South of the 0℃ isotherm, what is the average temperature (> 0℃ or < 0℃?), what about to the north?

Qinling Mountains-Huaihe River line.

South of 0°C isotherm: > 0°C

North of 0℃ isotherm: < 0℃

3) Find out the values ​​of the highest and lowest temperatures in January in my country. What are their respective values? What's the difference between the two?

The highest is above 16℃ and the lowest is below -28℃, a difference of nearly 50℃

Characteristics of temperature distribution in my country:

Winter----big temperature difference between north and south

Summer - generally high temperatures across the country (small temperature difference between north and south)

Division of temperature zones in China

1. What is the basis for dividing temperature zones in my country?

Differences in temperature between north and south Agricultural production practices

2. Where does the dividing line between the warm temperate zone and the subtropical zone pass?

Qinling Mountains - Huaihe River Line

3. This dividing line is roughly consistent with the January 0°C isotherm.

Seasonal changes in precipitation

seasonal changes

Precipitation is concentrated in _________month

The rainy season in the south starts ____, ends ____, and the rainy season _____

The rainy season in the north starts ____, ends ____, and the rainy season _____

Compare the two pictures and analyze:

1. Which iso-precipitation line is the dividing line between humid and semi-humid areas in my country roughly equivalent to? What terrain areas and rivers pass through?

800mm constant precipitation line; Qinling-Huaihe River line.

2. Which constant precipitation line does the dividing line between humid areas and dry areas roughly coincide with?

Why is the area east of Changbai Mountain in Northeast China a humid area?

400 mm constant precipitation line; cold climate and weak evaporation.

Factors affecting my country’s climate (40 pages of text)

Latitude position: From south to north, the temperature becomes lower and lower

sea ​​and land location

Deeply affected by monsoon

Winter wind: northerly wind, which increases the temperature difference between north and south

Summer winds: southeast and southwest winds, warm and humid

Affected by the summer monsoon, precipitation decreases from southeast to northwest

terrain

Differences in climate between the two sides of the mountain: for example, the north and south sides of the Qinling Mountains

Vertical changes in mountain climate

Formation of plateau mountain climate

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Update Time: 2024-07-31

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