By 2012, less than 1 percent of the park's total area has been reforested and at the current rate, it will take several centuries to restore it to its pre-logged state.

A study of the area shows that the hydrological integrity of the forest has been maintained, and it is therefore ecologically resilient,[5] although since it is close to the regional capital Palangkaraya it remains at risk.

The forest is home to the world’s largest orangutan population, estimated at 6,910 individuals in 2003, and other rare or unique species.

The total agile gibbon population in the Sabangau catchment is estimated to be in the tens of thousands, but is declining fast.

[7][8] Vulnerable bird species include the large green pigeon (Treron capellei) and possibly Storm's stork (Ciconia stormi) and lesser adjutant (Leptoptilus javanicus).