What is the general trend of weather and precipitation in Heilongjiang Province this spring? About agriculture. ...

Temperate continental climate with four distinct seasons, cool in summer and warm in winter, and small annual temperature difference.

Cause: Located on the west coast of the mainland at 40 ~60 degrees north and south latitude, the climate is mild and humid due to prevailing westerly winds and warm currents.

Distribution: the west coast of the mainland at latitude 40 ~60 degrees, from northern Spain to the North Atlantic coast of Norway, the Pacific coast of northwest North America, the southern coasts of Chile and New Zealand in South America, etc.

Climatic characteristics:

Rainfall: the annual rainfall is about 500~2000 mm, and the windward slope (west slope) is larger than the leeward slope.

Rainy season: rainy all year round, with more autumn and winter and less spring and summer.

Soil: all have sedimentary soil, and there are large areas of soft black soil in temperate continental climate.

Typical temperate maritime climate landscape:

It is humid all the year round, influenced by the west wind and warm current, and there is a lot of water vapor, so there are a lot of clouds in the sky, which has become the main theme of European landscape painting.

A slightly humid continental climate.

In autumn, the leaves of some plants turn yellow, yellow and green, and the earth presents a colorful face.

Rotation of vineyards and pastures.

Influenced by the west wind, countries with temperate maritime climate present a green landscape.

Norway

New Zealand

Temperate continental climate

Summer rain is dominant, hot in summer and cold in winter, with large annual temperature difference. This climate type is distributed in a vast area from the central part of the mainland to the east coast with a latitude of 40 degrees to 60 degrees, such as the east of the Rocky Mountains in North America to the Atlantic coast, and the east of Central Europe to Siberia. Because it is far away from the ocean or located in the leeward area, the climate is less affected by the ocean, which is called temperate continental climate.

I. Latitude and location:

From the middle of the mainland to the east coast, the latitude is 30 ~ 60.

Second, the distribution area:

The vast inland of North America from Los Angeles to the northeast Atlantic coast. Central Europe is east longitude and eastern Europe, to southern Siberia.

South America, Africa and Australia in the southern hemisphere lack temperate continental climate because of their small temperate areas. ※.

Third, the reasons for the formation:

Winter: In winter, due to high pressure, the temperature is low and cold.

Summer: In summer, due to the rising temperature, a low-pressure center is formed, and the ocean airflow is transported inland. Coupled with thermal convection, the rainy season is concentrated in summer.

Fourth, the temperature characteristics:

It is hot in summer and cold in winter, with great temperature difference throughout the year.

Temperate continental climate, very cold in winter.

Climate map of Moscow

Regional difference of 60 N winter temperature

Verb (short for verb) Rainfall:

The annual rainfall is about 500 ~ 1000 mm.

Sixth, the rainy season:

It is rainy in summer and dry in winter.

Seven. Soil:

Sedimentary soil and vast soft black soil.

Eight, the surrounding temperate continental climate:

North America:

Most inland areas of North America have a continental climate. In winter, cold air from the polar regions moves south, and there will also be severe cold and snowfall along the Gulf Coast. The west wind blows eastward through the Rocky Mountains. After passing through the Rocky Mountains, part of the airflow descends along the hillside, forming a dry and warm foehn at the eastern foot. In summer, the warm and humid airflow from the Gulf of Mexico along the Missouri River basin sends rainwater to the Great Plains of North America, which is beneficial to farming. In the south of the Great Plains, at the turn of spring and summer, due to the high temperature fluctuation and the drastic change of airflow, sometimes there will be a "tornado", which is formed by a strong thunderstorm cloud extending from the air to the ground.

Inner Mongolia:

Inner Mongolia is located in the north of Chinese mainland, with a land span of 97- 126 degrees east longitude and 38-53 degrees north latitude. It has a temperate continental climate, with warm winters in Leng Xia and an average annual rainfall of about 50-450 mm. 。

Qiqihar:

Qiqihar has a continental climate of cold temperate zone, with an average temperature of 3.2C, a maximum temperature of 39C in summer and -39C in winter, and a cool climate. Qiqihar, 300 kilometers northwest of Harbin, is the political, economic, cultural and transportation center of Heilongjiang Province.

Switzerland:

Switzerland is located in temperate zone, which belongs to temperate continental climate, and its latitude is similar to Hokkaido. Although Switzerland is not near the sea, it is deeply influenced by the warm current of North Atlantic wine. Therefore, it is warmer than Hokkaido, with an average annual rainfall of 1200mm, distributed in all seasons. The temperature is greatly affected, and the mountains are covered with snow all year round, and it is below zero all year round. The ground temperature is about 20 degrees Celsius in summer and 5 degrees Celsius in winter, with an average temperature drop of 0.6 degrees Celsius per 100 meter. However, the climate in Switzerland is dry, and it is zero, which often feels warmer than that in Taiwan Province Province, but the temperature difference in Switzerland is quite large in the morning and evening.

The scenery of Switzerland

Dunhuang:

Dunhuang is a typical temperate continental climate, with an average annual rainfall of 39.9 mm and an average annual temperature of 9.3℃. It is a tourist city with drought and water shortage. Dunhuang is located at the westernmost end of Hexi Corridor, bordering Anxi in the east, Aksai in the south and Xinjiang in the northwest, and is located on the northern edge of the Qinghai-Tibet Plateau. The terrain of Dunhuang is a basin, surrounded by mountains, mainly Gobi, desert and mountains.

Tianjin:

Tianjin _ belongs to temperate continental climate, with four distinct seasons, and the annual average temperature is above 13 degrees Celsius. Spring is short, the temperature rises rapidly and there are many sandstorms. High temperature rainfall is concentrated in summer, with the highest temperature in July, with an average of above 26 degrees Celsius. Autumn is cool, which is the golden season; Winter is long and cold, with the lowest temperature of 65438+ 10 month and the average temperature below minus 4 degrees Celsius.

9. Comparison between temperate maritime climate and continental climate:

Temperate maritime climate:

Distributed in 40-60 latitudes on the west coast of all continents. Winter is particularly mild, which is about 15 ~ 20℃ higher than other areas in the same latitude. In summer, the temperature is not high under the regulation of the ocean, so the annual temperature difference is usually less than 15℃. In addition, the prevailing westerly wind transports water vapor to the coast all the year round, especially in the windward slope area, with abundant precipitation. It is easy to rain, so the rainfall is a little more than that in spring and summer. The climate is characterized by high humidity, more clouds and less sunshine. Because of the mild climate, it is suitable for living. Western Europe belongs to this type and eventually becomes a region with developed culture and prosperous industry in the world.

Temperate continental climate:

It is distributed in the inland of all continents, lacking the regulation of the ocean, so it is hot in summer and cold in winter, and the annual temperature difference is above 30℃. The annual rainfall is generally less than the maritime climate, rarely exceeding 100mm, and it is concentrated in summer. Although it snows occasionally in winter, under the influence of geothermal energy, the soil temperature is maintained and insect eggs are destroyed by snow, so that plants and crops can germinate and thrive in large numbers when they melt in the next spring. this is