Determining the role of richness and evenness in alpine grassland productivity across climatic and edaphic gradients
文献类型：期刊论文
| 作者 | Cheng, Z; Zhao, JX; Sun, J; Wu, GL |
| 刊名 | OECOLOGIA
 |
| 出版日期 | 2022 |
| 英文摘要 | Spatial heterogeneity of climatic and edaphic gradients can substantially affect the grassland productivity function. However, few studies have tested the importance of species richness and evenness on regulating grassland productivity across spatial-scale climatic and edaphic changes. This study examines the complex mechanisms by which species richness and evenness regulate productivity in alpine meadow and steppe. We used field survey data to explore above-ground productivity formation and sensitivity to spatial-scale climatic and edaphic response of alpine grassland based on species richness and evenness. Results showed that the growing season solar radiation was the main driving factor of above-ground biomass and was strongly negatively correlated with above-ground biomass. Furthermore, compared with alpine steppe, above-ground biomass in alpine meadow was more responsive to climatic variables, but less responsive to soil variables. Unexpectedly, we found that the regulation patterns of species richness and evenness on above-ground biomass were different in both habitats by a structural equation model analysis. Our study demonstrated that species evenness and richness were both important in co-regulating above-ground biomass in alpine meadow, whereas species richness mattered more than species evenness in regulating above-ground biomass in alpine steppe. Our results offer further support for species richness and evenness co-regulating grassland productivity across spatial-scale climatic and edaphic gradients, which helps maintain the benefits of plant diversity and alpine grassland ecosystems. |
| 源URL | [http://210.75.249.4/handle/363003/61057]  |
| 专题 | 西北高原生物研究所_中国科学院西北高原生物研究所 |
| 推荐引用方式 GB/T 7714 | Cheng, Z,Zhao, JX,Sun, J,et al. Determining the role of richness and evenness in alpine grassland productivity across climatic and edaphic gradients[J]. OECOLOGIA,2022. |
| APA | Cheng, Z,Zhao, JX,Sun, J,&Wu, GL.(2022).Determining the role of richness and evenness in alpine grassland productivity across climatic and edaphic gradients.OECOLOGIA. |
| MLA | Cheng, Z,et al."Determining the role of richness and evenness in alpine grassland productivity across climatic and edaphic gradients".OECOLOGIA (2022). |
入库方式： OAI收割
来源：西北高原生物研究所
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