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"Natural Features and Agriculture" Northwest Region PPT Courseware 2
1. Grasslands and deserts
Thinking: Why is the northwest region mainly composed of grassland and desert landscapes?
Analyze the causes of drought in the northwest region
Deep inland, far from the sea
Mountains block humid air flow
Humid air currents from the ocean are difficult to reach
Scarce precipitation and arid climate
2. Pastoral areas and irrigated agricultural areas
The northwest region is far from the sea and is heavily blocked by mountains, making it difficult for moist air to reach it. Therefore, the precipitation here is relatively low. The annual precipitation in most areas is less than 400 mm. The annual precipitation in more than half of the areas is less than 200 mm, and some are even less than 50 mm. It is the most arid area in my country.
irrigated agricultural area
1. What are the favorable and unfavorable conditions for developing planting industry in Northwest China?
Disadvantages: Dry climate and less natural precipitation.
Favorable conditions: high temperatures in summer, strong light, and large temperature difference between day and night.
2. What agricultural areas are there in the northwest region?
A. Hetao Plain
B. Ningxia Plain
C. Hexi Corridor
D. Foothills of Tianshan Mountains
3. List several famous agricultural products in the northwest region.
Long-staple cotton, grapes, cantaloupe, etc.
The relationship between karez and the natural environment
1. Why not build open channels but build culverts when digging karez?
Avoid extensive evaporation of water.
2. What local favorable conditions were used to dig the karez?
It uses melted water from local mountain ice and snow, and the surface is covered with Gobi and desert, making it easy to excavate.
3. What kind of local natural environment does the karez reflect?
The climate is arid.
Multiple choice questions
1. Which of the following groups of terrain areas belong to the northwest region ( )
A. Tianshan, Qinling, Yinshan, Sichuan Basin
B. Altai Mountains, Junggar Basin, Qinling Mountains, and Greater Khingan Mountains
C. Inner Mongolia Plateau, Altai Mountains, Junggar Basin, Sichuan Basin
D. Tianshan Mountains, Altai Mountains, Yinshan Mountains, and Tarim Basin
2. Xiao Ming took a train from Hohhot to Urumqi to travel.
The natural landscapes that can be seen during the journey are ( )
A.Grassland, desert, forest B.Grassland, desert steppe, desert
C. Forest, grassland, desert D. Desert, grassland, forest
3. "The solitary smoke in the desert is straight, and the sun is setting in the long river" is the most appropriate description of the following area ( )
A. The middle and lower reaches of the Yangtze River B. The hilly areas of Shandong
C. Northeast Plain D. Lower Tarim River area
4. The reason why agriculture in the northwest region is mainly based on animal husbandry is ( )
A. Local living customs based on meat eating
B. There is less precipitation and widespread grassland
C. Developing animal husbandry can bring higher economic benefits
D. The local area has many excellent livestock breeds
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