Nitrogen enrichment affects the competition network of aboveground species on the Inner Mongolia steppe
文献类型：期刊论文
| 作者 | Sun, Qingqing; Yang, Junjie1; Wang, Shan; Yang, Fengyan; Zhang, Guangming1,3; Wei, Cunzheng1; Han, Xingguo1 ; Li, Jinshan
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| 刊名 | GLOBAL ECOLOGY AND CONSERVATION
 |
| 出版日期 | 2021 |
| 卷号 | 31 |
| 关键词 | Nitrogen deposition Species competitive network Species richness Intransitivity competition Network complexity Inner Mongolia steppe |
| DOI | 10.1016/j.gecco.2021.e01826 |
| 文献子类 | Article |
| 英文摘要 | Nitrogen(N) enrichment changes the community structure of terrestrial ecosystems. However, the patterns and structural functions of species interaction networks under N-enrichment conditions are still unclear. We compared and analysed data from 13 years of N deposition experiments in the Inner Mongolia temperate steppe in China. We found that spatial association effectively detected intransitive networks, the structure of which was occasionally changed by species with low biomass but high-frequency occurrence, as an especially vital intermediary for forming a large network. The peak value of the network complexity was maintained at 2 gNm(-2) year(-1). In the third year after fertilization at 50 gNm(-2) year(-1), the species interaction changed to transitivity, which lasted for 8 years. Then, the environment completely replaced species interactions as the main factor affecting community composition. Surprisingly, the negative effect of N enrichment on the species network was counteracted by mowing and precipitation, which increased the probability of intransitive network formation. In the intransitive network, species diversity was not only maintained but also increased under low N-addition rates from 0 gNm(-2) year(-1) to 3 gNm(-2) year(-1). These studies indicated that N enrichment reduced the complexity of the species network and increased hierarchical differences among species competition. Intransitive competition is highly prevalent and a key driver of species coexistence and diversity maintenance in the typical steppe. Moreover, environmental factors directly affect plant intransitive competition, resulting in changes in species diversity. |
| 学科主题 | Biodiversity Conservation ; Ecology |
| 出版地 | AMSTERDAM |
| 电子版国际标准刊号 | 2351-9894 |
| WOS关键词 | INTRANSITIVE COMPETITION ; ECOSYSTEM STABILITY ; COMMUNITY STRUCTURE ; BIOTIC INTERACTIONS ; PLANT-COMMUNITIES ; TYPICAL STEPPE ; DIVERSITY ; BIODIVERSITY ; DEPOSITION ; SCALE |
| WOS研究方向 | Science Citation Index Expanded (SCI-EXPANDED) |
| 语种 | 英语 |
| WOS记录号 | WOS:000704592100002 |
| 出版者 | ELSEVIER |
| 资助机构 | Strategic Priority Research Program of the Chinese Academy of Sciences [XDA23080403] ; National Key Research and Development Project of China [2016YFC0500705] ; Fundamental Research Funds for the Central Universities [2015ZCQ-LY-01] |
| 源URL | [http://ir.ibcas.ac.cn/handle/2S10CLM1/26667]  |
| 专题 | 植被与环境变化国家重点实验室 |
| 作者单位 | 1.Beijing Forestry Univ, Coll Sci, Beijing 100083, Peoples R China 2.Changzhi Med Coll, Dept Pharmaceut Sci, Changzhi 046000, Peoples R China 3.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sun, Qingqing,Yang, Junjie,Wang, Shan,et al. Nitrogen enrichment affects the competition network of aboveground species on the Inner Mongolia steppe[J]. GLOBAL ECOLOGY AND CONSERVATION,2021,31. |
| APA | Sun, Qingqing.,Yang, Junjie.,Wang, Shan.,Yang, Fengyan.,Zhang, Guangming.,...&Li, Jinshan.(2021).Nitrogen enrichment affects the competition network of aboveground species on the Inner Mongolia steppe.GLOBAL ECOLOGY AND CONSERVATION,31. |
| MLA | Sun, Qingqing,et al."Nitrogen enrichment affects the competition network of aboveground species on the Inner Mongolia steppe".GLOBAL ECOLOGY AND CONSERVATION 31(2021). |
入库方式： OAI收割
来源：植物研究所
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