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Tràm Chim park needs better water, fire management to conserve eco-system: experts

26 July 2018 | 11:20:00 AM

Proper management of water and fires at the Tràm Chim National Park in Đồng Tháp Province holds the key to preserving the Ramsar site’s eco-system, experts have said.



The Tràm Chim National Park in the Mekong Delta province of Đồng Tháp. — VNA/VNS Photo An Hiếu


The impounding of floowater nearly year round to prevent fires in the cajeput forests there has upset the eco-system, resulting in a decline in the number of sarus cranes there in recent years, they said.


Speaking at a recent seminar held in Đồng Tháp on preserving Tràm Chim’s bio-diversity, Dr Dương Văn Ni of the Cần Thơ University said priority should be given to preserving grasslands before cajeput forests.

This practice of floodwater impounding round the year might help prevent forest fires but degrades grassland communities, he said.

When there is waterlogging almost all year, foreign invasive species like golden snail, suckermouth catfish and water hyacinth develop rapidly while cỏ năng (Eleocharis) grasslands shrink and the number of precious sarus cranes plunges, he pointed out.

For the park’s eco-system, the appropriate climate is a cycle of dry season followed by a flooding season.

Eleocharis grasslands are the favourite habitat of sarus cranes.

Nguyễn Đức Tú, co-ordinator of the International Union for Conservation of Nature’s Water and Wetlands Programme, said the number of sarus cranes in the park has fallen sharply from more than 1,000 in 1980 to 11 this year.

Nguyễn Hữu Thiện, an independent expert on the Mekong Delta’s ecology, said Tràm Chim officials are trying to protect cajeput forests from fires because they would be punished if forests burn.

But this has caused the park to “suffocate”, he said.

“When a fire occurs, people think everything will die, but this is totally wrong. The world has realised that fires are also a part of the eco-system since it makes the forest vegetation thinner and boosts regeneration.”

Concurring, Nguyễn Văn Hùng, deputy director of the province’s Department of Science and Technology and former director of the park, said: “Prescribed fires are fine. It is necessary to have controlled burning of forests.”

During the burning, fauna can move to nearby forest areas, he said.

After a few days of burning, new grass grows and birds, rodents, snakes, and turtles return in large numbers, he said.

The province People’s Committee should create a mechanism for controlled burning of grass and other vegetation and water management to sustain the park’s eco-system, he said.

Nguyễn Văn Dương, chairman of the People’s Committee, instructed park officials and other relevant authorities to draft a detailed plan to manage water and fire to sustain the park eco-system.

Nguyễn Hoàng Minh Hải, head of the park’s science and international co-operation division, said Tràm Chim has recovered about 190ha of cỏ năng kim (Eleocharis ochrostachys) and cỏ năng ống (Eleocharis dulcis) plants in recent years.

Officials have released more than 10 rare fish species such as giant barb and black sharkminnow into the park to reproduce, he said.

Tràm Chim spreads over an area of 7,313ha in the Đồng Tháp Mười (Plain of Reeds) region in Tam Nông District.

It is also well-known as a habitat for other rare birds like the white-winged duck, spotted-billed pelican and lesser adjutant as well as many fish species listed in Việt Nam’s Red Book like the clown knifefish, Hampala barb, small scade river carp, giant barb, and black sharkminnow.

(VNA)

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