Factors that affect China's Water Resources - Coggle Diagram
Factors that affect China's Water Resources
Location of China's water resources
Location of flooding in China
Harmful effections of flooding
Loss of life and injuries
Damaging buildings, roads, rail lines, bridges, and engineered structures
Disrupting transport services
Disrupting utility services such as gas and electricity supplies
Polluting Drinking water
Causes of floodings in China
Heavy rainfall and typhoons
Heavy rainfall and typhoons cause lare amounts of rainwater to reach river channels in a short period of time, leading to severe flooding.
When the flow of water in rivers becomes slow, sands and soil tend to be deposited on the river bed, causing the river bed to become shallow, which decreases the holding capacity of the river. This is called silting
Poor farming practices
Farmers graze a large amount of livestock and grow crops on slopes. The livestock eats grass that is protecting the soil. This is called overgrazing. Crops grown on slopes will cause the soil to be poor. This is called overcultivation. Both cause soil erosion, which makes silting more serious.
Trees are cutr on a large scale in China. Tree roots help infiltration of water, and helps to stop soil erosion
Reclaiming lakes for different uses
Lakes in China have been used for fishi ponds, or reclaimed for farming and settlement, which reduces the sizes of lakes.
Floors of urban areas are covered with concrete. When rain falls, it cannot infiltrate the underground. Sewer and drains in urban areas help divert rainwater quickly, but water often reaches the river channels faster.
Solutions to flooding
Amount of China's water resources
Distribution of resources
Distance from the Sea