Water Holding Capacity and Capita Storage of Plant Community Litter in Representative Desert Steppe

LI Xue-bin; CHEN Lin; TIAN Zhen; WANG Xin-yun; LIU Bing-ru; LIU Ren-tao; XIE Ying-zhong

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Water Holding Capacity and Capita Storage of Plant Community Litter in Representative Desert Steppe

更新时间：2024-11-07

- Water Holding Capacity and Capita Storage of Plant Community Litter in Representative Desert Steppe
- Vol. 25, Issue 6, (2011)
- 作者机构：
  
  1. 宁夏大学西北退化生态系统恢复与重建教育部重点实验室
  2. 宁夏大学科技处
- 作者简介：
- 基金信息：
- DOI：
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- Published：2011
- 稿件说明：
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LI Xue-bin, CHEN Lin, TIAN Zhen, et al. Water Holding Capacity and Capita Storage of Plant Community Litter in Representative Desert Steppe[J]. 2011, 25(6).
DOI：

LI Xue-bin, CHEN Lin, TIAN Zhen, et al. Water Holding Capacity and Capita Storage of Plant Community Litter in Representative Desert Steppe[J]. 2011, 25(6). DOI：

摘要

通过对荒漠草原4种典型植物群落(蒙古冰草群落、甘草群落、赖草群落、沙蒿群落)枯落物蓄积量的调查

结合室内持水试验

运用数理统计的方法分别得到4种典型植物群落枯落物的蓄积量、最大持水量、吸水速率等水文特征参数。结果表明:荒漠草原不同植物群落枯落物蓄积量在50.8～396.2g/m2

其蓄积量由大到小为蒙古冰草群落>甘草群落>赖草群落>沙蒿群落

与植物群落地上生物量变化是一致的;4种植物群落枯落物最大持水量存在一定差异

蒙古冰草群落、甘草群落、赖草群落、沙蒿群落枯落物最大持水量分别相当于0.934

0.737

0.656

0.230mm的降雨。这4种枯落物最大可吸收其自身重量2.45～3.71倍的降雨;4种植物群落枯落物的持水量与时间呈线性相关

在浸水的前2h枯落物吸水速率最快

随着时间的延长

趋势逐渐变缓

当枯落物在水中浸泡12h时

其持水量基本达到最大值;4种植物群落枯落物吸水速率与时间呈指数相关

在浸水的前2h吸水速率较快

4～12h后逐步减缓。荒漠草原枯落物蓄积、覆盖所引起的水分蓄存与运移已经成为荒漠草原生态系统最为关键的生态过程之一。

Abstract

within investigating and water holding experiment indoors to the four species(Agropyron mongolicum

Glycyrrhiza uralensis

Leymus secalinus

and Artemisia desertorum) of representative plant community in desert steppe

using the methods of the mathematical statistics

and gained the hydrological features parameters including the capita storage

the maximum capita storage of water holding

water absorption rate and etc.The results showed that enclosure and grazing prohibition on the different capita storage of plan...

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