毛果苔草湿地枯落物及其地下生物量动态

应用生态学报 ›› 2003, Vol. ›› Issue (3): 363-366.

毛果苔草湿地枯落物及其地下生物量动态

何池全

上海大学环境科学与工程系, 上海 200072

收稿日期:2001-04-09 修回日期:2001-07-09 出版日期:2003-03-15
基金资助:
中国科学院“九五”重大科技攻关项目(KZ951B1201);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

Dynamics of litter and under-ground biomass in Carex lasiocarpa wetland on Sanjiang Plain

HE Chiquan

Department of Environmental Science and Engineering, Shanghai University, Shanghai 200072, China

Received:2001-04-09 Revised:2001-07-09 Online:2003-03-15

摘要/Abstract

摘要： 采用网袋法和土柱法分别对三江平原湿地毛果苔草(Carex lasiocarpa)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0.7058%～0.2372%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210.8876g·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,数学模拟近于抛物线型.

Abstract: 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穖^-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.

中图分类号:

Q948.1

何池全. 毛果苔草湿地枯落物及其地下生物量动态[J]. 应用生态学报, 2003, (3): 363-366.

HE Chiquan . Dynamics of litter and under-ground biomass in Carex lasiocarpa wetland on Sanjiang Plain[J]. Chinese Journal of Applied Ecology, 2003, (3): 363-366.

参考文献

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