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Africa

Deforestation seen as aggravating Zimbabwe, Mozambique flood crisis

media Residents are seen protecting themselves by the rain in the aftermath of the passage of the cyclone Idai in Beira, Mozambique, on March 17, 2019. ADRIEN BARBIER / AFP

Boulders as big as motor cars were dislodged in Zimbabwe’s eastern Rusitu Valley by Cyclone Idai, sending a deadly torrent down a river and wiping out 160 houses in its path. The landslides in Rusitu and the nearby town of Chimanimani are the reason so many people are missing, presumed dead beneath the rocks and rubble.

Chimanimani and Rusitu along Zimbabwe's moist Eastern Highlands are areas that normally receive high rainfall, year after year. There is growing speculation that deforestation and poor land practices in the area have severely compromised its ability to withstand what nature hurls at it.

"Large tracts of land are being denuded of trees which are being chopped for uses such as firewood, charcoal making and the illegal wood trade,” Charlene Hewat, manager of Zimbabwe-based Greenline Africa Trust told RFI.

“This deforestation has contributed to increased land degradation and landslides."

One long-time Chimanimani resident told RFI that changes in land use over the past 24 years had "most definitely" contributed to the landslides that devastated places like Ngangu suburb, where more than 100 were killed.

2019-04-07 Zimbabwe - Mozambique floods

The resident, who asked not to be named, said this included the building of houses higher up hillsides.

She admits though that "there are areas which slipped where very little disturbance has occurred."

The government says it will be stricter on where people build their houses in future. Local Government Minister July Moyo told cabinet this week: “There is need to really study the ecosystem in Chimanimani, Chipinge and those affected areas and be able to say to ourselves: is this the way we want to settle people?”

In contrast the Vumba mountains to the north of Chimanimani were able to withstand similar amounts of rain. The Vumba comprises mostly intact evergreen forest and natural grasslands.

Writing on Facebook after Cyclone Idai Vumba resident Ben Freeth compared the area’s natural ability to absorb rain t.o "a person at a very drunken party who was somehow, against all the odds, able to hold their drink and remain sane and sensible and pleasant to be around and not fall over."

It’s not just in Zimbabwe where deforestation conc.erns have been raised.

Researchers commenting on the destruction wrought by Cyclone Idai in neighbouring Mozambique say human factors worsened the floods.

This handout picture taken and released on March 18, 2019, by the Mission Aviation Fellowship shows people on a roof surrounded by flooding in an area affected by Cyclone Idai in Beira. Rick Emenaket / Mission Aviation Fellowship / AFP

In a blog post the Western Indian ocean Deltas Exchange and Research Network (WIoDER) said denuded hills in catchment areas of major rivers meant the downpour could not "be slowed down, nor infiltrate into the soils, nor be absorbed by the (absent) vegetation.”

Said Zimbabwe’s Hewat: “The question is, when will we human beings realise the importance of trees and stop the uncontrolled chopping?”

 
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