Characteristics and Interaction of Soil Nematodes and Microbial Communities in Stipa Grandis Grassland

doi:10.11733/j.issn.1007-0435.2018.01.009

Acta Agrestia Sinica ›› 2018, Vol. 26 ›› Issue (1): 77-84.DOI: 10.11733/j.issn.1007-0435.2018.01.009

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Characteristics and Interaction of Soil Nematodes and Microbial Communities in Stipa Grandis Grassland

ZHANG Ai-lin¹, ZHANG Jian-ning², HONG Jie³, YANG Dian-lin¹

1. Agro-environmental Protection Institute, Ministry of Agriculture, Tianjin 300191, China;
2. College of Horticulture, Shenyang Agriculture University, Shenyang, Liaoning Province 110866, China;
3. Inner Mongolia Ewenki Flag Grassland Workstation, BayanTorr, Inner Mongolia 021100, China

Received:2017-08-09 Revised:2018-03-12 Online:2018-02-15 Published:2018-05-25

贝加尔针茅草原土壤线虫与微生物群落特征及其相互作用

张爱林¹, 赵建宁², 洪杰³, 杨殿林¹

1. 农业部环境保护科研监测所, 天津 300191;
2. 沈阳农业大学园艺学院, 辽宁沈阳 11086;
3. 内蒙古鄂温克旗草原工作站, 内蒙古巴彦托海 021100

通讯作者: 杨殿林
作者简介:张爱林(1992-),女,山东临沂人,硕士研究生,主要从事草原生态与恢复研究,E-mail:zal18669553371@163.com
基金资助:
国家自然科学基金项目（31170435）资助

Abstract

Abstract:

The characteristics and interactions of soil microbes and soil nematode communities under different levels of nitrogen application in Stipa sinensis grassland in Inner Mongolia were analyzed. As a result of the analysis, the nitrogen application significantly affected the fungal and bacterial community structure and quantity of soil microorganisms, but the effect on soil microbial community was not significant. It had a significant effect on the number of soil nematodes of bacterial groups(Bacterivores),fungal groups (Fungivores) and plant parasite groups. It also affected the species richness (SR) of the soil nematode and the stability of the community structure.There was a significant positive correlation between soil parasitic plant nematodes and soil bacterial communities, fungal communities, and fungi/bacteria.There was also a significant correlation between soil fungal community and soil nematode community richness (SR), evenness (J') and structural index (WI). The experimental results showed that the effect of nitrogen application on the soil fungal community was greater than that on the soil bacterial community. The fungal community in the soil and the plant parasitic group nematode in the soil have mutual promoting effects, which increased the infection rate of the plant by nematodes, and nitrogen application also changed the community structure of soil nematodes.

Key words: Stipa baicalensis steppe, Nitrogen application, Microbial community, Soil nematode

摘要：

分析了在施氮环境下内蒙古贝加尔针茅草原土壤微生物和土壤线虫群落特征及相互作用。结果表明，不同的施氮水平显著影响土壤微生物真菌和细菌群落结构和数量，但对土壤微生物群落总量的影响并不显著；对土壤线虫食细菌类群（Bacterivores）、食真菌类群（Fungivores）和植物寄生性类群（Plant parasites）数量影响显著，同时影响土壤线虫的物种丰富度（SR）和群落结构的稳定性。土壤中的植物寄生性类群线虫与土壤中细菌群落、真菌群落和真菌/细菌之间呈显著正相关，土壤真菌群落与土壤线虫群落的丰富度（SR）、均匀度（J'）和结构指数（WI）也有明显的相关性。施氮对土壤真菌群落的影响大于对土壤细菌群落的影响，土壤中的真菌群落与土壤中植物寄生性类群线虫具有相互促进的作用，增加了植物受线虫感染的几率，同时施氮也改变了土壤线虫的群落结构。

关键词: 贝加尔针茅草原, 施氮, 微生物群落, 土壤线虫

CLC Number:

S154.36

ZHANG Ai-lin, ZHANG Jian-ning, HONG Jie, YANG Dian-lin. Characteristics and Interaction of Soil Nematodes and Microbial Communities in Stipa Grandis Grassland[J]. Acta Agrestia Sinica, 2018, 26(1): 77-84.

张爱林, 赵建宁, 洪杰, 杨殿林. 贝加尔针茅草原土壤线虫与微生物群落特征及其相互作用[J]. 草地学报, 2018, 26(1): 77-84.

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Characteristics and Interaction of Soil Nematodes and Microbial Communities in Stipa Grandis Grassland

贝加尔针茅草原土壤线虫与微生物群落特征及其相互作用

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