"Climate" China's natural environment PPT courseware 2

Description

"Climate" China's natural environment PPT courseware 2

China has a vast land, rich resources, and diverse climates. At the same time, the landscapes presented in various places in China are completely different. Let us unveil its wonderful and mysterious veil!

my country spans many longitudes from east to west and latitudes from north to south. It is at varying distances from the ocean and has complex internal terrain, creating a complex climate diversity.

Characteristics of winter temperatures in China

There is a big difference in temperature between the north and the south of my country in winter, with the south being warmer and the further north the temperature is getting colder.

The reason for the large temperature difference between the north and south of China in winter

In winter, the height of the sun at noon in the north is lower than in the south, the days are shorter, and less sunlight is received. At the same time, the northern region is close to the source of the winter monsoon, and the cold winter monsoon intensifies the severe cold in the north. When the winter monsoon crosses the mountains and reaches the south, the wind strength weakens greatly. Therefore, the winter low temperature in northern Heilongjiang Province can reach -30~-40°C, dripping water turns into ice, and the ground is covered with snow; while the average winter temperature in Hainan Province is around 20°C, with a warm climate and green trees everywhere.

Activity

Lingling and Beibei made the following judgments on the areas with the lowest winter and summer temperatures in China. Are they right? Give your reasons.

The lowest temperatures in winter are in the north.

The areas with the lowest temperatures in winter and summer are in the north.

The basis for the division of China’s temperature zones

Most crops can grow actively when the daily average temperature rises steadily above 10°C. The daily average temperatures during the duration period of greater than or equal to 10°C are accumulated, and the resulting temperature sum is called the active accumulated temperature.

The active accumulated temperature reflects the heat conditions that a local climate can provide to crops and is an important condition for dividing temperature zones. In China, we classify areas with active accumulated temperatures <1600°C as cold temperate zones, areas with 1600-3400°C as mid-temperate zones, areas with 3400-4500°C as warm temperate zones, and areas with 4500-8000°C as subtropical zones. > Areas with a temperature of 8000°C are classified as tropical.

The places with the most and least rainfall in China

The place with the most precipitation in China is Huoshaoliao in northeastern Taiwan. The average precipitation over the years is 6557.8 millimeters, with the highest record reaching 8409 millimeters in 1912. The place with the least precipitation is Toksun in the Turpan Basin of Xinjiang. The average annual precipitation is only 5.9 millimeters. The number of precipitation days per year is less than 10 days. In some years, there is even no water.

Read the picture and complete the following tasks.

(1) Compare the annual precipitation in the three cities of Guangzhou, Wuhan, and Urumqi, and tell how they roughly reflect the spatial distribution trend of precipitation in China.

(2) Take a look at the seasonal changes in precipitation in the three cities of Guangzhou, Wuhan, and Harbin, and talk about how they roughly reflect the seasonal distribution of precipitation in China.

Regional distribution and seasonal distribution characteristics of precipitation in China

There are large regional differences in precipitation in China. The southeastern coastal areas have greater precipitation and are relatively humid, while heading toward the northwest inland, the precipitation decreases and the degree of drought gradually increases.

The temporal distribution of precipitation in China is also very uneven. Precipitation in most areas is concentrated in summer, and the precipitation in most places from May to September generally accounts for about 80% of the annual precipitation. Precipitation is more concentrated in Northeast China, North China and other regions.

Distribution of climate types in China

The eastern half of China has a large-scale monsoon climate. From south to north, it is tropical monsoon climate, subtropical monsoon climate, and temperate monsoon climate. The northwest mostly has a temperate continental climate. The Qinghai-Tibet Plateau has an alpine plateau climate.

China has a vast territory and spans many temperature zones and wet and dry areas, giving the climate complex and diverse characteristics. In addition, due to the diverse terrain and wide disparity in terrain, the complex diversity of climate has been increased. The western high mountain area shows obvious vertical climate characteristics.

The complex and diverse climatic conditions are conducive to the reproduction and growth of a variety of organisms, making China rich in animal and plant resources; it is also conducive to the development of diversified operations, enabling the comprehensive development of China's agriculture, forestry, animal husbandry, and fishery industries; and it is also beneficial to society. The rich and colorful life forms China's unique regional culture. Complete the following tasks accordingly.

Name the climate characteristics of the areas where the following rare animals live.

Wild camels: In China, they are mainly distributed in the desert areas of northwest China.

Tibetan antelope: distributed on the Qinghai-Tibet Plateau.

Asian elephant: In China, it is mainly distributed in the Xishuangbanna area in southern Yunnan Province.

The impact of monsoon climate on China

The monsoon climate has a significant impact on my country's economic development. High temperatures are common in summer, rain and heat occur at the same time, and the water and heat conditions are properly coordinated, so that crops and trees can receive sufficient heat and moisture during the vigorous growth period. Therefore, the planting limits of warm-loving crops in China are higher than those in other parts of the world. Much more. However, there is a lot of precipitation in summer, which is prone to floods, while there is little precipitation in other seasons, which is prone to drought. When the monsoon is abnormally strong in winter and summer, it will lead to large fluctuations in precipitation and unstable thermal conditions, which will lead to droughts and floods, as well as low temperatures and low temperatures in summer. Cold waves in winter and spring often cause damage to industrial and agricultural production and even people's lives.

China's climate has continental characteristics

Due to the vast area of ​​mainland China, with its west extending into the interior of Asia, China's climate has significant continental characteristics. This is mainly reflected in the large annual and diurnal changes in temperature. Compared with other regions at the same latitude in the world, the temperature is significantly lower in winter and higher in summer.

Class exercises

1. Which of the following statements about my country’s temperature is correct ( )

A. Mohe is the place with the lowest temperatures in winter and summer in my country.

B． Turpan Basin is the place with the highest winter temperatures in my country

C． The Qinghai-Tibet Plateau is the place with the lowest summer temperatures in my country

D． Hainan Island is the place with the highest summer temperature in my country

2. The rainy seasons of the following three cities in order from longest to shortest are ( )

A. Changsha, Harbin, Guangzhou B. Guangzhou, Changsha, Harbin

C． Changsha, Guangzhou, Harbin D. Harbin, Changsha, Guangzhou

3. The reason why southeastern my country has more precipitation than northwest China is ( )

A. The southeast is close to the ocean, and the northwest is far from the ocean.

B． The southeast is not significantly affected by the summer monsoon

C． The northwest is further from the Atlantic Ocean than the southeast

D． The southeast has a lower latitude than the northwest

4． The climate types of Qiqihar and Paris are ( )

A. Temperate monsoon climate and temperate oceanic climate

B． Subtropical monsoon climate and Mediterranean climate

C． Cold zone climate and temperate continental climate

D． Temperate continental climate and temperate oceanic climate

5. The annual temperature range in Qiqihar is much greater than that in Paris, which explains ( )

A. Qiqihar’s latitude is much higher than Paris

B． Qiqihar has much more precipitation than Paris

C． Qiqihar is much more continental than Paris

D． The average temperature in Qiqihar is much higher than that in Paris

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For more information about the "China's Natural Environment and Climate" PPT courseware, please click on the China's Natural Environment ppt and climate ppt tag.

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Update Time: 2024-10-03

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