Crop diversity facilitates soil aggregation in relation to soil microbial community composition driven by intercropping
Crop diversity facilitates soil aggregation in relation to soil microbial community composition driven by intercropping
复制标题
作物多样性促进与间作驱动的土壤微生物群落组成相关的土壤聚集
DOI：
10.1007/s11104-018-03924-8
复制
发表时间：
2019-01
期刊：
影响因子：
4.9
通讯作者：
Li Long
中科院分区：
文献类型：
--
作者：
Tian Xiu-li;Wang Cheng-bao;Bao Xing-guo;Wang Ping;Li Xiao-fei;Yang Si-cun;Ding Guo-chun;Christie Peter;Li Long
研究证实间作增加了土壤宏观团聚体，但其背后的机制尚不清楚。方法从2009年开始，在西北绿洲3个地点进行了3次长期野外试验。第一个是分块设计：根瘤菌（接种或不接种）和三种种植制度（蚕豆/玉米间作和相应的单一栽培）。第二和第三个试验均为单因子随机区组设计，采用9种种植制度（玉米间作蚕豆、鹰嘴豆、大豆或油菜，以及相应的单一栽培）。土壤团聚体采用湿筛法测定。通过磷脂脂肪酸（PLFA）和16S rRNA高通量测序分析，测定2015年和2016年的微生物生物量和群落组成。结果间作土壤大团聚体（bb0 mm）在3个立地和2年内增加了15.5-58.6%，其部分原因是土壤中Sordariales的相对丰度增加，丛枝菌根真菌生物量增加，或硝基螺旋菌的相对丰度降低，具体取决于土壤类型。结论种植改变了土壤微生物群落组成，进一步促进了土壤团聚。这些发现提供了对生态系统功能中生物多样性维持机制的见解。
Background and AimsStudies verify that intercropping increases soil macro-aggregates but the mechanism underlying the increase is poorly understood.MethodsThree long-term field experiments were conducted starting in 2009 at three sites in an oasis in northwest China. The first was a split-plot design: Rhizobium (with or without inoculation) and three cropping systems (faba bean/maize intercropping and corresponding monocultures). The second and third experiments were both single-factorial randomized block designs with nine cropping systems (maize intercropped with faba bean, chickpea, soybean, or oilseed rape, and the corresponding monocultures). Soil aggregates were determined by the wet sieving method. Microbial biomass and community composition in 2015 and 2016 were determined by phospholipid fatty acid (PLFA) and high throughput sequencing analysis of 16S rRNA.ResultsSoil macro-aggregates (> 2mm) in intercropping systems increased by 15.5-58.6% across three sites and two years, an effect derived partly from increased relative abundance of soil Sordariales, from enhanced arbuscular mycorrhizal fungi biomass, or from reduced relative abundance of Nitrospirae, depending on soil type.ConclusionsIntercropping alters soil microbial community composition and further facilitates soil aggregation. These findings provide insights into the mechanisms underlying the maintenance of biodiversity in ecosystem functioning.
登录
查看更多内容
DOI：
10.1007/bf00749861
发表时间：
1995-02
期刊：
Fertilizer research
影响因子：
--
作者：
R. Senaratne;N. Liyanage;R. Soper
通讯作者：
R. Senaratne;N. Liyanage;R. Soper
DOI：
10.1111/nph.13045
发表时间：
2015-03
期刊：
The New phytologist
影响因子：
--
作者：
M. Rillig;C. Aguilar‐Trigueros;Joana Bergmann;E. Verbruggen;S. Veresoglou;A. Lehmann
通讯作者：
M. Rillig;C. Aguilar‐Trigueros;Joana Bergmann;E. Verbruggen;S. Veresoglou;A. Lehmann
DOI：
10.1201/9781420011371.ch33
发表时间：
2006-06
期刊：
--
影响因子：
--
作者：
K. Krishnamoorthy
通讯作者：
K. Krishnamoorthy
DOI：
--
发表时间：
1986
期刊：
--
影响因子：
--
作者：
C. Francis
通讯作者：
C. Francis
影响因子：
9.7
作者：
Md. Rezaul Karim Siddiky;J. Schaller;T. Caruso;M. Rillig
通讯作者：
Md. Rezaul Karim Siddiky;J. Schaller;T. Caruso;M. Rillig