The Ecuadorian government was negotiating a secret $1 billion deal with a Chinese bank to drill for oil under the Yasuni national park in the Amazon while pursuing a high-profile scheme to keep the oil under the ground in return for international donations, according to a government document.

The proposed behind-the-scenes deal, which traded drilling access in exchange for Chinese lending for Ecuadorian government projects, will dismay green and human rights groups who had praised Ecuador for its pioneering Yasuni-ITT Initiative to protect the forest. Yasuni is one of the most biodiverse places in the world and home to indigenous peoples.

The initiative – which was abandoned by Ecuador’s government last year – is seen as a way to protect the Amazon, biodiversity and indigenous peoples’ territories, as well as combat climate change, break Ecuador’s dependency on oil and avoid causing the kind of social and environmental problems already caused by oil operations in the Ecuadorian rainforest.

“This raises serious doubts about whether the government was truly committed to keeping ITT oil in the ground,” said Atossa Soltani, from NGO Amazon Watch and a former ambassador for the initiative. “While we were promoting the Yasuni initiative to donors, the government was offering ITT’s crude to China.” The document, titled China Development Bank Credit Proposal, bears the name of Ecuador’s Ministry of Economic Policy Co-ordination on every page. Under the heading Results of the 1st Negotiating Round: Preliminary agreements,  it states: “Last minute clause: The Ecuadorian party has said it will do all it can to help PetroChina and Andes Petroleum explore ITT and Block 31.”