天然次生林不同程度火烧迹地中生物量动态变化的研究

采用空间序列代替时间系列的方法,对不同程度火烧迹地中阔叶林和白桦落叶松林生物量变化进行动态研究的结果表明：在中、重度火烧迹地中,灌木生物量曲线波动幅度剧烈,草本生物量曲线波动幅度较小,最后都逐渐趋于稳定;在轻度火烧迹地中,草本、灌木生物量开始阶段迅速增加,之后呈现较小幅度波动,最后逐渐趋于稳定。乔木生物量在轻、中、重度火烧迹地中都呈增长趋势;在阔叶林和白桦落叶松林两种林型的不同程度火烧迹地中,总生物量与火后时间具有较强的相关性。

The Invesitigation on Dynamic Variabilityof Natural Secondary Forest Biomass at Different Degree of Burned Areas

The investigation on biomass chang in broad-leaved forest and the birch and larch forest at different degree of burned areas through the space sequence of time sequence method.The result showed that the curne of the shrub biomass was severe fluctuant and but herbaceous biomass curve was smaller range of fluctuation,and finally have gradually stabilized in moderately and severe burned areas.the herbaceous biomass and the shrub biomass increased rapidly in beginning,after showing small amplitude fluctuations,...