黄土丘陵区不同植被类型根际微生物群落功能多样性研究

doi:10.11733/j.issn.1007-0435.2015.04.007

草地学报 ›› 2015, Vol. 23 ›› Issue (4): 710-717.DOI: 10.11733/j.issn.1007-0435.2015.04.007

黄土丘陵区不同植被类型根际微生物群落功能多样性研究

张超¹, 刘国彬^1,2, 薛萐¹, 王国梁¹

1. 西北农林科技大学水土保持研究所黄土高原土壤侵蚀与旱地农业国家重点实验室, 陕西杨凌 712100;
2. 中国科学院水利部水土保持研究所, 陕西杨凌 712100

收稿日期:2014-08-04 修回日期:2014-12-26 出版日期:2015-08-15 发布日期:2015-08-26
通讯作者: 王国梁
作者简介:张超(1985-),男,陕西宝鸡人,博士,助理研究员,主要从事土壤微生物多样性研究,E-mail:zhangchaolynn@163.com
基金资助:
国家自然科学基金(41401621)(41371510);陕西省科技基础研究项目(2014JQ5171);中国科学院“西部之光”人才支持计划(2014)资助

Functional Diversity of Rhizosphere Microbial Community of Different Vegetation Types in the Hilly-gully Region of Loess Plateau

ZHANG Chao¹, LIU Guo-bin^1,2, XUE Sha¹, WANG Guo-liang¹

1. State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest A&F University, Yangling, Shaanxi Province 712100, China;
2. Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi Province 712100, China

Received:2014-08-04 Revised:2014-12-26 Online:2015-08-15 Published:2015-08-26

摘要/Abstract

摘要：

为了解生态恢复过程中土壤微生物功能特征,采用Biolog-Eco微平板法分析了黄土丘陵区人工灌木(柠条 Caragana korshinskii、沙棘 Hippophaer rhamnoides)、人工草地(沙打旺 Astragalus adsurgens、柳枝稷 Panicum virgatum)和天然草地(阿尔泰狗哇花 Heteropappus altaicus、茵陈蒿 Artemisia capillaries)的根际微生物碳源代谢多样性特征。结果表明:柠条、阿尔泰狗哇花和茵陈蒿的根际微生物对糖类的代谢能力显著高于沙棘、沙打旺和柳枝稷;阿尔泰狗哇花和茵陈蒿对氨基酸类、酚酸类和聚合物类的代谢能力较高。茵陈蒿和阿尔泰狗哇花的微生物代谢功能多样性高于其他4种植物。柠条、阿尔泰狗哇花和茵陈蒿具有相似的根际微生物代谢功能。黄土丘陵区植被类型显著影响微生物群落碳源利用能力,天然草地根际微生物群落代谢功能多样性优于人工灌木和人工草地。

关键词: 黄土丘陵区, 植被类型, 根际, 微生物代谢功能群

Abstract:

To explore the metabolic function of soil microbial community in the ecological restoration, the rhizosphere microbial carbon utilization diversity of artificial shrubland (Caragana korshinskii, Hippophaer rhamnoides), artificial grassland (Astragalus adsurgens, Panicum virgatum), and natural grassland (Heteropappus altaicus, Artemisia capillaries) were analyzed on the abandoned cropland of hilly-gully region of Loess Plateau using Biolog-Eco microplate method. The results showed that the capabilities of soil microbes in metabolizing carbohydrates were significantly higher in the rhizsophere of Caragana korshinskii, Heteropappus altaicus, and Artemisia capillaries than that in the Hippophaer rhamnoides, Astragalus adsurgens, and Panicum virgatum. Among the six plants, Heteropappus altaicus and Artemisia capillaries presented the higher capabilities of metabolizing amino acids, phenolic acids and polymers. The functional diversities of microbial community were higher in the rhizosphere of Heteropappus altaicus and Artemisia capillaries than that in the other test plants. Caragana korshinskii, Heteropappus altaicus and Artemisia capillaries had the similar microbial metabolic function. Vegetation types had a significant effect on the carbon utilization of rhizosphere microbial community in the abandoned cropland of hilly-gully region of Loess Plateau. Natural grassland had the more functional diversity of microbial metabolism than the artificial shrubland and artificial grassland.

Key words: Hilly-gully region of Loess Plateau, Vegetation types, Rhizosphere, Microbial metabolic functional community

中图分类号:

S154.36

张超, 刘国彬, 薛萐, 王国梁. 黄土丘陵区不同植被类型根际微生物群落功能多样性研究[J]. 草地学报, 2015, 23(4): 710-717.

ZHANG Chao, LIU Guo-bin, XUE Sha, WANG Guo-liang. Functional Diversity of Rhizosphere Microbial Community of Different Vegetation Types in the Hilly-gully Region of Loess Plateau[J]. Acta Agrestia Sinica, 2015, 23(4): 710-717.

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黄土丘陵区不同植被类型根际微生物群落功能多样性研究

Functional Diversity of Rhizosphere Microbial Community of Different Vegetation Types in the Hilly-gully Region of Loess Plateau

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