The rehabilitation of the area begins by planting shade trees, such as pioneer trees, which help to reduce and kill the alang-alang as well as reducing soil erosion, improving infiltration of water into the soil, slowing down the outflow of water from the area thereby preventing floods and keeping streams alive during dry seasons. The planting of climax species follows a year later when the pioneer trees, just like in the patches of regenerating rain forest, have recreated a suitable microclimate with light shade and better humidity that these original rain forest species need. Rehabilitation activities include field maintenance such as weeding, hoeing, fertilizing, mulching, thinning, pruning, etc.
Nyaru Menteng Orangutan Rehabilitation and Reintroduction Center founded by the Borneo Orangutan Survival Foundation (BOS) in the year 1999. BOS Nyaru Menteng located in Arboretum Nyaru Menteng, Central Kalimantan, around 30 km of Palangkaraya. At this program, BOS has collaboration with Natural Resource Conservation Agency (BKSDA) Provinsi of Central Kalimantan, Ministry of Forestry.
Mawas conservation area administratively consists of two Regencies (South Barito and Kapuas), five Subdistricts and 58 villages (in which include dusun and RT), comprising around 29,000 Households (KK) (as many as 12,180 KK locate in 12 surveyed villages).