Why does the yangtze flood

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This Day In History. History Vault. Ancient China. Colonial America. World War II. Tuesday, September 14, For centuries, humans have relied on rivers for food, freshwater, and fertile land for growing crops. While water is essential to life, it can also be destructive. In many cases, the flooding of rivers can have terrible effects.

The Most Common Natural Disaster Flooding is the most common natural disaster, and the results are often deadly. The Central China flood of was one of the worst flooding events in recorded history.

The Yangtze and Huai rivers broke their banks, likely killing several million people. The aftereffects were terrible too. The floodwaters carried deadly diseases, and many who survived the initial flood struggled to find food. We are used to hearing about the way that floods affect humans, but floods affect the environment too.

The results are not always bad, however. In fact, some ecosystems even rely on flooding each season. Drowning, Erosion , Sedimentation Flooding can harm wildlife.

Floods can spread disease, drown animals, and destroy habitats. In , hundreds of animals were killed in floods in eastern India. Floodwaters can also change the landscape. It can also cause riverbanks to collapse in a process called erosion. Floodwaters carry materials like dirt and mud from the riverbanks. Known as sediment, these particles can damage the water quality and lead to overgrowth of harmful water plants. The sediment eventually settles out of the water in places like the bottom of a river or stream.

This process is called sedimentation. It can clog riverbeds and streams, kill water-dwelling organisms, and destroy habitats. Pollution, Disease Floodwater can be contaminated with pollutants, such as garbage, sewage, chemicals, and pesticides. The environment has benefitted through improved water quality, recovery of flora and fauna, conservation of threatened species and designation of nature reserves.

While 2. A particular strength of the Chinese approach is the iterative development and implementation of targeted policies that favors adaptive management. More than people have died or are missing in flooding and landslides brought on by the torrential rains — 23 of them since Thursday alone.

About 1. Major cities have been spared so far, but concern has risen over Wuhan and other downstream metropolises that are home to tens of millions of people. This article is more than 1 year old.