【摘要】 通过对三江平原典型沼泽生态系统毛果苔草枯落物中元素分析发现 ,Fe、Ni、Na元素随时间在枯落物中有积累的趋势 ;Mn、K、Mg元素先减少后增加 ;Ca元素在整个过程中是减少趋势 ;Cd、Co含量随时间呈减少的趋势 ,但速率平缓。在影响枯落物分解的因素中 ,积水深度和地表温度是决定性因素 ;枯落物中元素间有很好的相关性更多还原

【Abstract】 Through analyxing chemical elements in Carex lasiocarpa litter, Fe, Ni, Na showed a trend of increase, Ca showed a trend of decrease, Cd, Co showed a trend of decrease, but their rate is slow. Among all the factors that had effects on the chemical elements in Carex lasiocarpa litter, the most important ones were the water level in the ground surface and the temperature of ground. There were close correlations among chemical elements in Carex lasiocarpa litter.更多还原