sentences:  Elephant culling has been done to restrict the population of elephants to 13,000 (less than 1 per km2); against the recommended population of 35,000 – 40,000 animals (0.6 per km2) for the country as a whole.Apart from culling the other suggested option to keep the elephant population under check is sterilization.Conservationists covering this area have also expressed concern at the large "deforestation, poaching and unsustainable resource exploitation" that is occurring in this national park attributed to political and economic instability in the country.