Frequent question: Why is Mekong river polluted?

How did the Mekong River get polluted?

The pollution is due in part to the expansion of rice fields from 3.2 million hectares in 1995 to 3.9 million hectares this year and the increased use of fertilizers and pesticides. Another reason is pond expansion to grow pangasius (basa and tra).

What is the problem with the Mekong River?

Population growth, poor land-use planning and economic policies that encourage the unsustainable use of natural resources are among the factors increasing deforestation and biodiversity loss across the Greater Mekong region.

Why is the Mekong River at Risk?

Two main risks include the obstruction of the estimated 600 migratory fish species that swim to their spawning ground and the trapping of sediment by dams upstream that prohibits the replenishment of the delta’s nutrients.

Is the Mekong River dying?

Laos’ Don Sahong, the newest of dozens of Mekong dam projects, began generating electricity close to the Laos-Cambodia border in November. “Those dams and more than 70 others now operational in Laos and China all contribute to deteriorating downstream conditions. …

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What river has the most plastic?

The research shows that the Chang Jiang or Yangtze River is the worst culprit, responsible for 1.47 million tonnes of plastic pollution reaching oceans each year.

How many rivers are there in Laos?

Main rivers that have bigger catchmentarea of more than 5000 km², are the following 11 rivers: Nam Ou River Basin is located Northern region, Lao PDR; Nam Suang is located Northern region; Nam Khan is located Lang Prabang Province; Nam Ngum is located Northern-Central part; Nam Nhiep are located Phonesavan of …

Why did China build dams in Mekong River?

China has constructed 11 giant dams along the mountainous territory of the Upper Mekong to sustain its ever-increasing energy needs. The management of water flows has long been a concern for many living along the river.

What are the advantages of the Mekong River dam?

The three major advantages put forward in support of dam construction are hydropower, irrigation, and flood control. All require impoundment of the river, displacement of communities and provision of their major benefits at some distance from the site of the dam.

Where does the Mekong River empty?

What is the primary benefit of building hydroelectric dams on the Mekong River?

According to the MRC Council Study on the Sustainable Management and Development of the Mekong River Basin including Impacts of Mainstream Hydropower Projects, the LMB could see economic gains from full hydropower development of more than $160 billion by 2040. Development of hydropower brings synergies with other water …

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