| 毛果苔草湿地枯落物及地下生物量动态 |
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| 引用本文： | 何池全. 毛果苔草湿地枯落物及地下生物量动态[J]. 应用生态学报, 2003, 14(3): 363-366 |
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| 作者姓名： | 何池全 |
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| 作者单位： | 上海大学环境科学与工程系,上海200072 |
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| 基金项目： | 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 |
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| 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。
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| 关 键 词： | 土壤景观模型 模拟退火 多层感知机 采样布局优化 |
| 文章编号： | 1001-9332(2003)03-0363-04 |
| 修稿时间： | 2001-04-09 |
Dynamics of litter and under-ground biomass in Carex lasiocarpa wetland on Sanjiang Plain |
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| HE Chiquan. Dynamics of litter and under-ground biomass in Carex lasiocarpa wetland on Sanjiang Plain[J]. The journal of applied ecology, 2003, 14(3): 363-366 |
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| Authors: | HE Chiquan |
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| Affiliation: | Department of Environmental Science and Engineering, Shanghai University, Shanghai 200072, China. hechiquan@sina.com |
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| 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.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. |
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| Keywords: | Carex lasiocarpa wetland Standing litter Underground biomass Decomposition rate Seasonal dynamics. |
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