Response of bacterial community to simulated nitrogen deposition in soils and a unique relationship between plant species and soil bacteria in the Songnen grassland in Northeastern China
Response of bacterial community to simulated nitrogen deposition in soils and a unique relationship between plant species and soil bacteria in the Songnen grassland in Northeastern China
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东北松嫩草原细菌群落对模拟土壤氮沉降的响应及植物种类与土壤细菌的独特关系
DOI：
10.4067/s0718-95162014005000045
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发表时间：
2014-09
影响因子：
3.9
通讯作者：
董英山
中科院分区：
文献类型：
--
作者：
赵洪锟;高莹;白珍建;董英山
氮沉降极大地影响草原地上生物组成和土壤性质。然而，它对土壤，植物和细菌群落之间的关系的影响仍然存在争议。采用变性梯度凝胶电泳技术，计算Shannon-wiener指数来衡量土壤细菌多样性，并研究了氮素添加条件下植被和土壤性质对土壤细菌群落的影响。在以羊草（Leymus chinensis（Trin.）茨维尔和滨蒿（Artemisia scoparia Wald.）Et.试剂盒施氮水平分为5个水平（0、23、46、69、92 kg ha-1 yr-1）。结果表明，施氮提高了土壤微生物量碳和土壤细菌多样性。适量施氮（23、46、69 kg ha-1 yr-1）提高了土壤细菌多样性，过量施氮（92 kg ha-1 yr-1）则抑制了土壤细菌多样性。特别是SMBC与一年生植物和二年生植物生物量呈正相关，表明植物群落对土壤细菌的影响可以通过土壤细菌群落与植物物种的一个子集而不是所有物种之间的关系来解释。
Nitrogen (N) deposition greatly affects the above ground biological composition of grasslands and soil properties. However, its influence on the relationship among soil, plant and bacterial communities remain controversy. We calculated Shannon-wiener index to measure the soil bacterial diversity based on denaturing gradient gel electrophoresis, and investigate the roles of vegetation and soil properties on the soil bacterial community under N addition. A three-year simulated N deposition experiment was conducted in a forbs community dominated by Leymus chinensis (Trin.) Tzvel. and Artemisia scoparia Wald. Et. Kit. N was added at five levels (0, 23, 46, 69, 92 kg ha -1 yr -1 ). Our results showed that N addition increased the soil microbial biomass carbon (SMBC) and soil bacterial diversity. Moderate N (23, 46, 69 kg ha -1 yr -1 ) addition increased the soil bacterial diversity, whereas excess N (92 kg ha -1 yr -1 ) addition inhibited it. The SMBC and soil bacterial diversity were related to richness of plant functional groups. In particular, SMBC had positive correlation with biomass of annuals and biennials, suggesting that the effects of the plant community on the soil bacteria could be explained by a relationship between the soil bacterial community and a subset of plant species rather than all species.
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影响因子：
3.6
作者：
A. Liliensiek;D. Thakuria;N. Clipson
通讯作者：
A. Liliensiek;D. Thakuria;N. Clipson
影响因子：
5.1
作者：
Kennedy, N;Brodie, E;Clipson, N
通讯作者：
Clipson, N
DOI：
--
发表时间：
2009
期刊：
Physical review. A, Atomic, molecular, and optical physics
影响因子：
--
作者：
通讯作者：
--
影响因子：
9.7
作者：
Loranger-Merciris, Gladys;Barthes, Laure;Leadley, Paul
通讯作者：
Leadley, Paul
影响因子：
2
作者：
Kazunori Nakamura;K. Sakai
通讯作者：
Kazunori Nakamura;K. Sakai