[EST]
Viru raba on raba Kuusalu vallas Harjumaal Lahemaa rahvuspargis Tallinna–Narva maantee lähedal. Viru raba matkarada algab Liiapeksi–Loksa maantee lähistelt ja lõpeb Jõelähtme–Kemba tee ääres.
Viru raba pindala on 235 ha. Esindatud on rabale iseloomulik paks turbalasund, liigivaene taimestik, laukad ja älved
Viru raba asub kohas, kus pärast liustikujää sulamist ja jääpaisjärvede taandumist oli järv, mille mudasetted asuvad siiani soopõhjas. Järve kinnikasvamisel hakkas tekkima raba, mille laienemisele panid piirid seda ümbritsevad luitevallid. Teades, et turba juurdekasv aastas on keskmiselt üks millimeeter ning turbalasundi paksus on ligikaudu kolm meetrit, saab arvutada Viru raba vanuse, mis on ligikaudu 3000 aastat.
Viru raba nimi on tulnud sellest, et see asub ajaloolise Harjumaa idaosas, vastu Virumaad. Kuigi piir nende kahe maakonna vahel kulges veidi ida pool, mööda Valgejõge, võib arvata, et nii raba kui ka seda põhja pool ületav vallseljak, Viru mägi, on nime saanud piiriäärse asendi järgi.
Lähiminevikus on Viru rabas toodetud freesimismenetlusel turbapuru, kuid nüüd otsitakse meetodeid freesturbaväljade taastamiseks. Selleks hakati 2011. aastal jääksoid taastama: taheti taastada looduslik veerežiim, eemaldada puittaimestik ja hõlvata uut turbasammalt. Taastamine kestis 2013. aasta novembrini.
Allikas
[ENG]
Viru Bog is a bog in Kuusalu Municipality, Harju County, in the Lahemaa National Park, near the Tallinn–Narva highway. The Viru Bog hiking trail starts near the Liiapeksi–Loksa highway and ends at the Jõelähtme–Kemba road.
The area of Viru Bog is 235 ha. It is characterized by a thick peat deposit, species-poor vegetation, meadows and ravines.
Viru Bog is located in a place where, after the melting of glacial ice and the retreat of glacial lakes, there was a lake, the mud sediments of which are still found on the bog bottom. As the lake grew, a bog began to form, the expansion of which was limited by the surrounding dune banks. Knowing that the average annual growth of peat is one millimeter and the thickness of the peat deposit is approximately three meters, the age of Viru Bog can be calculated, which is approximately 3,000 years.
The name Viru Bog comes from the fact that it is located in the eastern part of historical Harju County, opposite Virumaa. Although the border between the two counties ran slightly to the east, along the Valgejõgi River, it can be assumed that both the bog and the hill that crosses it to the north, Viru Mägi, were named after their border position.
In the recent past, peat chips were produced in the Viru bog by milling, but methods are now being sought to restore the milled peat fields. To this end, restoration of the peat bogs began in 2011: the aim was to restore the natural water regime, remove woody vegetation and cover it with new peat moss. The restoration lasted until November 2013.