关键词: 因素, 黑龙江省, 林火

Abstract:

Factors and their ways affecting forest fires in Heilongjiang Province were analyzed here at a scale larger than 500?km\+2.The results indicated that the annual fire occurrence (anthropogenic fires) is direct proportional to populations engaging in forestry while the annual burned area is irrelevant to them.The spatial variance of drought index directly affects the spatial pattern of burning rates.Forest fire characters have no linear relationships with climatic factors.The response of fire occurrence and burned areas to annual averaged temperature and precipitation in the province can be concluded into two modes:one described by single leafed hyperboloid and another by dual leafed paraboloid.The cycles of forest fire characters are closely related to that of annual averaged temperature and precipitation.The effects of forest types on fire in the province are not significant.Better management significantly reduces forest fires.Fire occurrence and burned area have no linear relationships with number of fire outlooks,fire engines and communication network covers.

Key words: Factors, Forest fires, Heilongjiang