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Anonymous users2024-02-13The significance of the construction of the Beijing-Shanghai high-speed railway: it is conducive to fundamentally alleviating the tension of railway transportation; It is conducive to the improvement of the comprehensive transportation system; It is conducive to promoting resource conservation and environmental protection; It is conducive to speeding up the process of railway modernization. For example, why does there be large-scale land subsidence in China?
What are the impacts of land subsidence? How to deal with it? At present, more than 50 cities in China have experienced land subsidence to varying degrees.
More than 100 regional groundwater landing funnels have been formed across the country, covering an area of 150,000 square kilometers. The Yangtze River Delta, the North China Plain and the Fenwei Basin are the most severe.
There are two reasons for this: 1. Excessive groundwater extraction leads to a drop in the groundwater level.
2. The construction of the underground foundation of the construction of high-rise buildings crosses the aquifer, causing the groundwater level to drop.
Treatment measures: 1. Control groundwater exploitation and adopt artificial recharge.
2. Divert water across river basins to solve the problem of insufficient water resources.
3. Start the groundwater monitoring project.
4. Adopt engineering measures to prevent and control land subsidence.
Impact: Deterioration of water quality, destruction of buildings, destruction of underground pipelines, and impact on traffic.
There are many examples.
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Anonymous users2024-02-12Gansu**: Gansu is located on the edge of the Qinghai-Tibet Plateau in the extrusion zone of the Eurasian plate and the Indian Ocean plate, and the crustal structure is unstable.
High temperature in the south in summer: The southern region is affected by the subtropical high in the Pacific Ocean, and the airflow is sinking, dry and rainless.
The answer is non-copying).
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Anonymous users2024-02-11Middle East! Water and oil There are also religious conflicts.
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Anonymous users2024-02-10pwd=n4vp extraction code: n4vp upgraded version of the people's education version of junior high school geography seventh grade volume |E-textbook VII on geography. pdf|Geography Junior 1A Chapter 3, Section 4 Rivers and Lakes in China (3).
rmvb|Geography Junior High School 1 Chapter 3 Section 4 China's Rivers and Lakes (2).rmvb|Geography Junior High School 1A Chapter 3, Section 4 Rivers and Lakes in China (1) II. rmvb|Geography Junior 1A Chapter 3, Section 4 Rivers and Lakes in China (1).
rmvb|Geography Junior High School 1A Chapter 3, Section 3 Weather and Climate (2).rmvb|Geography 1A Chapter 3, Section 3 Weather and Climate (1).rmvb|Geography Junior 1A Chapter 3, Section 2 Temperature and Precipitation (2).
rmvb|Geography Junior High School 1A Chapter 3, Section 2 Temperature and Precipitation (1).rmvb|Geography is buried in junior high school 1 Chapter 3, Section 1 Topography and Topography of China (2).rmvb|Geography Junior High School 1A Chapter 3, Section 1 Topography and Topography of China (1).
rmvb|Geography Junior 1A Chapter 2, Section 3 Multi-ethnic country. rmvb|Geography Junior 1A Chapter 2 Section 2 Numerous populations. rmvb|Geography Junior High School 1 Chapter 2 Section 1 Territory and Administrative Divisions. rmvb
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Anonymous users2024-02-091: The world is full of fragrant flowers in April, and the peach blossoms in the mountain temple are in full bloom" The peach blossoms in the plain area of the lunar calendar in April have long withered, and the peach blossoms in the mountains are in full bloom at this time. For plants, flowering requires the right temperature.
Compared with the plains, the temperature in the mountains should be slightly lower, following the law of "every 100 meters above sea level, the temperature drops, so the temperature in the mountains at this time is suitable for peach blossoms."
As for vertical geographical distribution, it refers to the fact that in the alpine region, the hydrothermal regime from the foothills to the summit varies greatly with the change of altitude, thus forming a vertical climate zone.
2. Lushan is due to topographical factors, and Qingdao is due to the location of sea and land.
Answer] c. Analysis: The city of Anchorage is located in the south of Alaska, far from the Arctic Circle, and has a low dimension, so the climate is relatively warm. >>>More
You can compare it with astronauts and astronomers, because there is an old Chinese saying that you know astronomy and geography.
Damming and silting simply means building dams (a bit like ridges in farmland) in soil erosion areas to intercept soil layer by layer, so as to achieve the purpose of preventing soil erosion. >>>More
Origin of swamp soil: low-lying terrain, heavy parent material, poor water permeability, humid climate, large surface water, high groundwater level, often in a seasonal or long-term state of waterlogging. >>>More
Geography--- The most important thing in studying geography is to be careful. Take a map as an example, every bit of information on it may become the content of the test, and if you miss a little bit of it, it is likely that the map will be read in vain. When revising, it is best to make a full time to read systematically. >>>More