"Pearl of the Silk Road" PPT courseware where water and soil support people

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"Pearl of the Silk Road" PPT courseware where water and soil support people

Part One: Xinjiang’s Natural Environment

Geographical location?

It is located in the northwest region of my country, the hinterland of Eurasia, at mid-latitudes, far away from the ocean.

Alternate distribution of mountains and basins (three mountains sandwiched between two basins)

What's the climate like?

It has a temperate continental climate, with cold winters and hot summers, sparse precipitation and strong evaporation.

Turpan is known as the Fire Continent and is the hottest place in the country. The absolute maximum temperature reached 49.6 degrees. There is a saying that "eggs are cooked in the sand nest and flour cakes are baked on the stones". The basin is rich in light and heat resources. The basin is dry and has little rainfall. The annual rainfall is about 16 mm, and the annual evaporation is more than 3,600 mm. Water is as expensive as oil. The nearby Tianshan Mountains are covered with snow all year round at an altitude of more than 3,000 meters.

What is the relationship between Xinjiang’s climate characteristics and its location and terrain?

Xinjiang is deep inland and far away from the ocean, which is not conducive for water vapor from the ocean to reach. Coupled with the obstruction of a series of tall mountains, precipitation is low and the climate is dry.

Silk Road Pearl PPT, part 2: cooperative exploration:

What are the advantages of designing a karez like this?

advantage:

Reduce evaporation and save water. Avoid pollution and ensure water quality.

There is no exposure to the sun and the water temperature is cool. Artesian irrigation, no power required.

Thinking and summarizing: What factors are related to the prosperity of Xinjiang oasis agriculture?

1. Good irrigation conditions - karez;

2. Good light and heat conditions: high temperature in summer, long sunshine hours, and sufficient light;

3. The large temperature difference between day and night is conducive to the accumulation of organic matter in crops and is suitable for the planting of a variety of crops;

4. Topographic advantages: The land is flat, mostly plain areas in piedmont or basins, suitable for large-scale mechanized operations;

5. The diligence and wisdom of the people of Xinjiang.

Silk Road Pearl PPT, the third part: expansion and improvement

Now that modern science and technology are becoming more and more developed, how can oasis agriculture achieve longer-term development?

Suggestions and suggestions for the development of Xinjiang:

1. Make full and rational use of limited water resources.

2. Water-saving agriculture should be developed in arid areas.

3. Protect the karez and the surrounding ecological environment.

Silk Road Pearl PPT, Part 4: Consolidation Training

1. The terrain features of the Xinjiang Uygur Autonomous Region are usually described as "three mountains sandwiched by two basins". The "three mountains" here are ________ mountains, _______ mountains, and _______ mountains; the "two basins" are _______ _Basin is ________ basin.

2. Xinjiang Uygur Autonomous Region is a province with an area of ​​_____ in my country. Because of its location ____ from the sea, it has ______ precipitation and a ______ climate, thus forming a distinctive ______ agriculture.

3. Regarding the description of Xinjiang’s terrain distribution, which of the following statements is correct ( )

A. Low in the middle, high around the sides

B. To the north is the Altun Mountains

C. The basin in the north is the Junggar Basin

D. In the middle is Kunlun Mountain

4. The following water diversion projects that are most suitable for the development of oasis irrigation agriculture in Xinjiang are ( )

A. Karez B. Inter-basin water transfer

C. Surface diversion channel D. Build reservoir

Keywords: free download of History and Society PPT courseware for the second volume of the seventh grade of the People's Education Press, PPT download of the Pearl of the Silk Road, PPT download of the soil and water that nourishes the people, .PPT format;

For more information about the PPT courseware "A Side of Water and Soil Supports People, Silk Road Pearl", please click the "A Side of Water and Soil Supports People, Silk Road Pearl" ppt tag.

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Update Time: 2024-07-03

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