摘要
采用网袋法和土柱法分别对三江平原湿地毛果苔草 (Carexlasiocarpa)种群枯落物及地下生物量的季节动态变化规律进行分析 .结果表明 ,毛果苔草的立枯物总的变化趋势是其拟合曲线符合指数方程 .以其凋落物的失重率表示分解速率 ,而日失重率是随着时间增长而不断减少 ,且日失重率的变化在0 .70 5 8%～ 0 .2 372 %之间 .毛果苔草全生长季 (1999年 5月 2日～ 10月 10日 )枯落物总量为 2 10 .8876g·m-2 .毛果苔草地下生物量具有明显的垂直结构 ,呈倒金字塔形 。
With net sack and coring methods, this paper analysed the seasonal dynamics of litter and under ground biomass of Carex lasiocarpa population in Sanjiang Plain wetland. The standing litter showed exponential seasonal dynamics. The decomposition rate of litter was indicated by the rate of its weight loss, and the daily weight loss was gradually decreased from 0.7058 % to 0.2372 %. Carex lasiocarpa population produced 210.8876 g·m -2 litter in its vegetative season (from May 2, to October 10,1999), and its under ground biomass had an obvious vertical structure, like a converse pyramid or a parabola.
出处
《应用生态学报》
CAS
CSCD
2003年第3期363-366,共4页
Chinese Journal of Applied Ecology
基金
中国科学院"九五"重大科技攻关项目 (KZ95 1 B1 2 0 1)
中国科学院百人计划项目
上海市高等学校青年基金资助项目
关键词
毛果苔草湿地
凋落物
地下生物量
分解速率
季节动态模拟
Carex lasiocarpa wetland, Standing litter, Underground biomass, Decomposition rate, Seasonal dynamics.
