[1]麻云霞,李钢铁,蓝登明,等.浑善达克沙地榆AM真菌的空间分布及[J].北方园艺,2018,42(17):124-132.[doi:10.11937/bfyy.20174037]
MA Yunxia,LI Gangtie,LAN Dengming,et al.AM Fungi Spatial Distribution of Ulmus pumila and Its Correlation With Soil Factors in Hunshandake Sandy Land[J].Northern Horticulture,2018,42(17):124-132.[doi:10.11937/bfyy.20174037]
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MA Yunxia,LI Gangtie,LAN Dengming,et al.AM Fungi Spatial Distribution of Ulmus pumila and Its Correlation With Soil Factors in Hunshandake Sandy Land[J].Northern Horticulture,2018,42(17):124-132.[doi:10.11937/bfyy.20174037]
浑善达克沙地榆AM真菌的空间分布及
《北方园艺》[ISSN:1001-0009/CN:23-1247/S]
卷:
第42卷
期数:
2018年17
页码:
124-132
栏目:
出版日期:
2018-09-10
- Title:
- AM Fungi Spatial Distribution of Ulmus pumila and Its Correlation With Soil Factors in Hunshandake Sandy Land
- 文献标志码:
- A
- 摘要:
- 为了探明浑善达克沙地榆AM真菌的生态分布规律和土壤因子的相关性及其在生态恢复中的作用，填补我国浑善达克沙地顶级群落榆树疏林在菌根真菌方面的空白。2016年10月在浑善达克沙地样地内采集沙地榆(Ulmus pumila var.sabulosa)5～30 cm范围内根系和土壤，测定土壤养分含量、酶活性以及AM侵染率、孢子密度等，研究了浑善达克沙地榆AM菌根真菌（arbuscular mycorrhiza，AM）在不同样地和立地类型下的分布特征及与土壤因子之间的关系。结果表明：1）AM真菌能与沙地榆形成良好的共生关系，但分布具有空间异质性，菌根结构为Paris-type；2）正镶白旗、正蓝旗、克什克腾旗样地总侵染率平均值分别为71.86％、79.94％、71.74％，孢子密度平均值分别为3.99、7.02、1.90个·g-1，孢子密度和总侵染率均值为正蓝旗＞正镶白旗＞克什克腾旗，丘间地＞阴坡＞阳坡；3）孢子密度和总侵染率、易提取球囊霉素含量、碱性磷酸酶活性、过氧化氢酶活性呈极显著正相关，与总球囊霉素含量呈显著正相关，总侵染率与总球囊霉素含量、碱性磷酸酶活性呈极显著正相关，与过氧化氢酶活性呈显著正相关；4）第1、2主成分的累积方差贡献率达到65.663%，第1主成分中过氧化氢酶活性、易提取球囊霉素含量、速效钾含量、有机碳含量和碱性磷酸酶活性等土壤因子对决定土壤生态起主要作用。以上结果说明，浑善达克沙地榆与AM真菌可以形成良好的共生关系，侵染率与孢子密度具有空间异质性，并与土壤养分密切相关，这对进一步筛选和接种优势AM真菌具有重要意义。
- Abstract:
- In order to investigate the ecological distribution regularity of AM fungi at the the Ulmus pumila var.sabulosa of Hunshadake Sandy Land,the correlation between soil factors as well as their functions in ecological restoration,and to fill up the gaps in AM fungi at the Ulmus pumila open forest in the Top Community of Hunshandake Sandy Land in China,in October 2016,the root and soil within 5-30 cm area of the Ulmus pumila were collected in the sample land of Hunshandake Sandy Land to test its soil nutrient content,enzyme activity,AM fungi infection rate and spore density and to study the distribution characteristics of Ulmus pumila AM fungi（arbuscular mycorrhiza，AM）at the Hunshadake Sandy Land in different sample sites and site types and the relationship between soil factors.The results showed that,1)AM fungi could form a good symbiotic relationship with Ulmus pumila,but its distribution had spatial heterogeneity,and the mycorrhizal structure was Paris-type.2)The average total infection rates of sample sites inlcuding Zhengxiangbai Banner,Zhenglan Banner and Hexigten Banner were 71.86%,79.94%,and 71.74％respectively.The average spore density was 3.99,7.02,1.90 pieces·g-1 respectively.The average spore density and total infection rate were Zhenglan Banner>Zhengxiangbai Banner>Hexigten Banner and hilly area>shady slope>sunny slope.3)The spore density and the total infection rate,content of glomalin which was easy to be extracted,the activities of alkaline phosphatase and catalase were positively correlated and it′s positively correlated with the content of total glomalin,and there was a significantly positive correlation between the total infection rate and the content of total glomalin,the activity of alkaline phosphatase,the activity of catalase.4)The cumulative variance contribution rate of the first and second principal component reached up to 65.663%.The soil factors in the first principal component which include the activity of catalase,EEG content,rapid available potassium content,organic carbon content and alkaline phosphatase activity played a major role in determining soil ecology.The above results showed that the symbiotic relationship between the Ulmus pumila of Hunshadake Sandy Land and AM fungi could be formed,and the infection rate had spatial heterogeneity with spore density and was closely related to soil nutrients,which were of great significance for further screening and inoculation of dominant AM fungi.
备注/Memo
第一作者简介：麻云霞（1991-），女，硕士研究生，研究方向为荒漠化防治。E-mail:1572666975@qq.com.责任作者：李钢铁（1963-）,男，教授，博士生导师，现主要从事荒漠化防治等研究工作。E-mail:13848817183@163.com.基金项目：林业公益性行业科研专项资助项目（201504412）;国家自然科学基金资助项目(31260202)。收稿日期：2018-03-12
更新日期/Last Update:
2018-09-30