Effects of Soil Moisture and Electrical Conductivity on Growthand Population Distribution of Phragmites australis

YANgG Fan; DENG Wei; YANG Jian-feng; ZHANG Guang-xin; LI Xiu-jun

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Effects of Soil Moisture and Electrical Conductivity on Growthand Population Distribution of Phragmites australis

更新时间：2024-11-07

- Effects of Soil Moisture and Electrical Conductivity on Growthand Population Distribution of Phragmites australis
- Vol. 20, Issue 4, Pages: 199-201(2006)
- 作者机构：
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  CLC： S152.7Q945.17
- Published：2006
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YANgG Fan, DENG Wei, YANG Jian-feng, et al. Effects of Soil Moisture and Electrical Conductivity on Growthand Population Distribution of Phragmites australis[J]. 2006, 20(4): 199-201.
DOI：

YANgG Fan, DENG Wei, YANG Jian-feng, et al. Effects of Soil Moisture and Electrical Conductivity on Growthand Population Distribution of Phragmites australis[J]. 2006, 20(4): 199-201. DOI：

摘要

在对芦苇小区调查取样的基础上，利用Pearson关联分析法研究了土壤水、电导率与芦苇生长和种群分布的关系。结果表明土壤电导率空间变率明显，最大值是最小值的2倍。芦苇小区土壤电导率超过110mS／m，且pH值大于10时，芦苇由单一种群落转变成伴生种群落（芦苇＋碱茅）。并随着电导率和pH值的增加，碱茅所占的比例增加。土壤电导率与芦苇生长指标（覆盖度、平均株高、生物量干重、鲜重）呈显著性相关（P〈0．01），说明土壤盐分是影响芦苇种群特征的重要因素。表层土壤含水量（10cm剖面）与芦苇生长指标中的覆盖度、生物量呈显著性相关（户〈0．05）。深层含水量（100cm剖面）与芦苇生长指标均呈显著性相关（P〈0．05），因此表层水和深层水对芦苇的生长具有重要作用。

Abstract

The correlation between growth and population distribution of Phragmites australis and soil moisture and electrical conductivity were investigated using Pearson correlative analysis.The result presented that spatial variation of EC_H is obvious

the maximum of EC_H is two times of the minimum.When EC_H is higher than 110 mS/m

pH is higher than 10

Phragmites australis change from single population to mixture population(Phragmites australis Puccinellia distans).Percentage of Puccinellia distans in mixture community increase with increasing EC_H and pH.Population coverage

mean height

fresh biomass and dry biomass are correlated with soil electrical conductivity

their Pearson correlation coefficients are-0.598

-0.567

-0.714

-0.617

respectively.So soil salinity is important impact factor for Phragmites australis population.Soil moisture is significant correlation with coverage and biomass in 10 cm depth of soil profile(p<0.05).Soil moisture is significant correlation with coverage

mean height and biomass in 100 cm depth of soil profile(p<0.05).So soil moisture of surface layer and deep-layer soil profile are very important for Phragmites australis population growth.

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