In the recent lawsuit, the public group Gerakan Rakyat Aceh Menggugat (GeRaM) launched a civil lawsuit at the Central Jakarta District Court.
"[The plan] effectively dissolves protection of much of Aceh's remaining tropical rainforests, whitewashing crimes of the past, and paving the way for a new wave of catastrophic ecological destruction," GeRaM representative Farwiza Farha said.
The short-term profits from the developments would not benefit the people of Aceh, Farha said. "They are after quick immediate short-term gains, but the consequences will be borne by the rest of the community."
"The [Aceh plan] opens up massive areas of lowland forests to potential new concessions for plantations, mining, timber even, and it also legalizes many roads that have been cut through the forest ... and roads alone are enough to send these species to extinction," said Farha.
The lawsuit targets both the Aceh provincial government and the Indonesian federal Ministry of Home Affairs.
Leuser: Last Refuge for Endangered Nature
The Leuser Ecosystem, spanning more than 2.6 million hectares across the provinces of Aceh and Northern Sumatra, is one of the richest areas of tropical rainforest in Southeast Asia. Within the ecosystem is Gunung Leuser National Park, which is listed as a World Heritage Site.