LEAD: Japan vows to continue efforts toward climate agreement+.

TOKYO, Nov. 27 Kyodo

(EDS: ADDING VICE TRADE MINISTER'S REMARKS, MORE BACKGROUND IN LAST 3 PARAS)

Japan is disappointed that a U.N. climate conference collapsed without agreement on Saturday, but will continue efforts to ensure that international interest in the issue does not wane, Chief Cabinet Secretary Yasuo Fukuda said Monday.

''We believe it is very unfortunate'' that the conference collapsed, the top government spokesman said at a news conference. ''We will continue to negotiate with a positive attitude so that international enthusiasm (for the issue) is not lost.''

Negotiators at the sixth Conference of Parties to the U.N. Framework Convention on Climate Change in The Hague wrapped up two weeks of talks without agreement, as participants remained split over the role of forest absorption in meeting greenhouse-gas reduction targets.

Also Monday, Vice International Trade and Industry Minister Katsusada Hirose told reporters that Tokyo will continue to call for 3.7% of its target reduction in carbon dioxide emissions to be met through forest absorption.

The so-called Kyoto Protocol, which set country-by-country greenhouse gas reduction targets in 1997, requires Japan to cut by 6% from 1990 levels its annual average carbon dioxide emissions between 2008 and 2012.

''We will not be able to attain the 6% reduction target as compared with 1990 levels unless our call for a 3.7% cut (through forest absorption) is supported,'' Hirose said. ''We will continue efforts to gain further support for our stance.''