Singapore’s Nature Reserves are conserved under the Parks and Trees Act 2006. These reserves include:
The reserve contains lowland and coastal hill dipterocarp forest. Examples of the tall seraya Shorea curtisii growing at this relatively low altitude are a sign of the coastal influence. About half of the reserve consists of primary forest, and half shows signs of significant past disturbance.
The reserve contains scattered patches of primary lowland dipterocarp forest, tall secondary forest of varying quality depending on its age, maturity and tree species mix, and freshwater swamp forest. The surfaces of the reservoirs (MacRitchie, Upper Peirce, Lower Peirce, Upper Seletar) also constitute part of the nature reserve.
The reserve contains mangroves, mudflats, river, and disused fish and prawn ponds that are gradually reverting to more natural brackish wetland types.
The reserve contains secondary coastal forest, much of which has grown up since the Second World War, but with some older elements. It is on steep sandstone slopes, at the seaward foot reaching to a rocky shore and shallow coral and rubble substrate.
Singapore’s 24 Nature Areas include the four Nature Reserves and 20 other areas that are subjected to administrative safeguards under the Parks and Waterbodies Plan (Special and Detailed Controls Plan). The 20 other areas are:
Article as represented by National Parks of Singapore : https://www.nparks.gov.sg/biodiversity/our-ecosystems/nature-areas-and-nature-reserves