Indonesia's tsunami ravaged Aceh province could face a new wave of disasters if local forests are cut down for reconstruction work, the conservation group WWF has warned.

At least three landslides and two major floods have hit Aceh so far this year, and in 2004 thousands of people in four Aceh districts had to flee their homes when heavy rain on denuded forest slopes caused flash flooding.
WWF on Thursday said timber needed for the major post-tsunami reconstruction phase, due to start soon, must be sourced from outside Indonesia.
"Unless there is a commitment by those involved in reconstruction to use imported timber from well-managed forests, major reconstruction projects are likely to rely on timber logged from Sumatra's already-depleted forests," WWF Global Tsunami Response Coordinator Ralph Ashton said.
"This will lead to more floods and landslides - what has been described as a 'tsunami from the hills' - and the potential for further tragedy for the Indonesian people."
The Indonesian government estimates 200,000 permanent houses are needed, requiring at least 860,000 cubic metres of sawn timber over five years.
Mr Ashton said if this amount of timber was taken from Indonesian forests, the result would be an increased risk of disasters, further environmental degradation, and more suffering for the Acehnese people.
Aceh was one of the worst hit area when the 2004 Boxing Day tsunami hit, killing more than 250,000 in south Asian countries.
WWF also warned threatened species including Sumatran tigers, Sumatran rhinos and orang-utans were already battling for survival in Indonesia's shrinking forests.
"Those involved in the reconstruction effort need to plan ahead to use timber from well-managed forests in countries like Australia, New Zealand, Canada and the USA," Mr Ashton said.
"By taking the short-sighted option of using timber from Indonesian forests, the development community might well solve the immediate acute problem of rebuilding houses, but in the process cause more chronic problems for livelihoods and natural resource security in other parts of Indonesia."
British Red Cross technical adviser Bill Marsden said his organisation had found that timber sourced outside Indonesia was cheaper, and urged other organisations active in Aceh to avoid adding to its problems.
"Our donors in Britain know about the problems of overlogging in Indonesia's forests and expect us to do the right thing for the long term," Mr Marsden said.
"It's possible, it hasn't slowed us down, and there really is no excuse for permanent housing projects to be using anything but sustainably-sourced timber."