CORRECTED - PREVIEW-Japan may meet CO2 goals, but only due to recession

(Corrects third bullet point to say 100 million tonnes, not 10 million tonnes. The first correction made clear in paragraph nine that the Japan firm is a joint venture, not a unit)

* What: Japanese greenhouse gas emissions for 1st Kyoto year

* When: announcement expected as early as this week

* Greenhouse gases seen down 100 million tonnes at 1.27 bln

* Meeting 2008-2012 goals hinge on forests, nuclear run rate

* No policy drivers yet for emission cuts when economy grows

By Risa Maeda

TOKYO, Nov 9 (Reuters) - Japan is expected to report as early as this week that its greenhouse gas emissions sank last year, the first year of its Kyoto Protocol obligations.