Terai Arc Landscape (TAL) program has been initiated from 2001 and is being jointly implemented by the Department of Forests (DoF) and Department of National Parks and Wildlife Conservation (DNPWC) of Ministry of Forests and Soil Conservation (MFSC) and WWF Nepal Program in collaboration with the local communities and NGOs.

Goal of TAL is to "conserve the biodiversity, forests, soils and watersheds of the Terai and Churia hills in order to ensure the ecological, economic and socio-cultural integrity of the region."

Spread over 49,500 sq km, linking 11 transboundary protected areas across Nepal and India, TAL is home to flagship species like the Asiatic wild elephants, rhinos, and tigers. In Nepal, TAL encompasses 23,129 sq km of 14 districts including 75 percent of the remaining forests of lowland Nepal including Churia hills and four protected areas. This landscape has the second largest population of rhinos and one of the highest density of tiger populations in the world. A WWF recognized Global 200 ecoregion, TAL covers three Ramsar sites and two World Heritage Sites. TAL was prioritized by HMG/N as a priority program in the 10th Plan (2002-2007).