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土壤含水量和电导率对芦苇生长和种群分布的影响
引用本文:杨帆,邓伟,杨建锋,章光新,李秀军.土壤含水量和电导率对芦苇生长和种群分布的影响[J].水土保持学报,2006,20(4):199-201.
作者姓名:杨帆  邓伟  杨建锋  章光新  李秀军
作者单位:中国科学院东北地理与农业生态研究所,长春,130012
基金项目:国家自然科学基金;中国科学院基金
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。

关 键 词:土壤含水量  土壤电导率  芦苇  吉林省西部
文章编号:1009-2242(2006)04-0199-03
收稿时间:2006-05-25
修稿时间:2006-05-25

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.Effects of Soil Moisture and Electrical Conductivity on Growthand Population Distribution of Phragmites australis[J].Journal of Soil and Water Conservation,2006,20(4):199-201.
Authors:YANgG Fan  DENG Wei  YANG Jian-feng  ZHANG Guang-xin  LI Xiu-jun
Institution:Northeast of Institute Geography and Agricultural Ecology, CAS, Changchun 130012
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.
Keywords:soil moisture  soil electrical conductivity  Phragmites australis  west areas of Jinlin province
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