Zambrud National Park
Located in the Zambrud Village, Siak Indrapura District, Siak, Riau Province, the Zambrud National Park is presenting beauty of the emeralds which taken from the same name. The lake and the swamp at this forest is so beautiful and natural despite it has clear black water. This national park is still virgin and naturally majestic.
The black water around the swamp forest will enchanting you it will be turn into dark green colored like emerald during the twilight when the sun is setting down.
Zambrud National Park is an area where there are two adjoining lakes, which is Pulau Besar Lake (2,416 ha) and the Bawah Lakes (360 ha). Both lakes have black water and being the home of rare fauna and flora.
There are four islands around this lake; they are Pulau Besar (10 hectares), Pulau Tengah (1 hectare), Pulau Bungsu (1 hectare) and Pulau Beruk (2 hectares). Since 25 November 1980, an area of 28237.95 hectares was designated as a wildlife reserve area (KSM). While since August 2007 this presidential Wildlife Refuge was established as Emerald National Park with more than 30 129 hectares area. This area is in the form of primary swamp forest on peat with a height of 100-200 meters above sea level. A layer of the soil is in the form of giant basin where the water comes from the surrounding area and it will be accommodated in this lake.
The fauna that are protected in this region is the Sumatran tiger (Panthera tigris sumatrensis), tiger limb (Neofelis nebulosa), bears (Helarctos malayanus), and Napu (Tragulus Napu). The protected primates including the long-tailed macaque (Macaca fascicularis), monkey (Macaca nemestrina), and kokah (Presbytis melalophos). There is also a protected reptiles such as crocodiles sinyulong (Tomistoma schlegelii) and estuarine crocodile (Crocodylus porosus).
In this area is also live 38 species of birds, that 12 of which are protected, including white storks, hornbills trough, hornbills sulky, two colors hornbills and black tail hornbills. There are also Serindit birds (Loriculus galgulus) which becomes an icon of Riau Province.
At this lake, there are 14 species of fish where eight of it have important economic value for local fishermen are sipimping, selais, kayangan, Tapah, baung, tomang, balido, gabus, catfish, buju, and gelang.
The area of Zambrud Lake is dominated by marsh plants such as bengku, varnish and pisang-pisangan. There is also a rare vegetation of red areca nut plants with brighter color than common red areca plants, and it is endemic.