The Grain for Green Program Intensifies Trade-Offs between Ecosystem Services in Midwestern Shanxi, China
文献类型：期刊论文
| 作者 | Hu, Baoan; Zhang, Zhijie; Han, Hairong; Li, Zuzheng; Cheng, Xiaoqin; Kang, Fengfeng; Wu, Huifeng |
| 刊名 | REMOTE SENSING
 |
| 出版日期 | 2021-10 |
| 卷号 | 798页码:- |
| 关键词 | Alpine meadow Grassland degradation Spatial scaling Qinghai-Tibet Plateau Soil microbiota |
| ISSN号 | 0048-9697 |
| 英文摘要 | The alpine meadow ecosystem, as the main ecosystem of the Qinghai-Tibet Plateau, has been heavily degraded over the past several decades due to overgrazing and climate change. Although soil microorganisms play key roles in the stability and succession of grassland ecosystems, their response to grassland degradation has not been investigated at spatial scale. Here, we systematically analyzed the spatial turnover rates of soil prokaryotic and fungal communities in degraded and undegraded meadows through distance-decay relationship (DDR) and species area relationship (SAR), as well as the community assembly mechanisms behind them. Although the composition and structure of both fungal and prokaryotic communities showed significant changes between undegraded and degraded meadows, steeper spatial turnover rates were only observed in fungi (Degraded Alpine Meadow beta = 0.0142, Undegraded Alpine Meadow beta = 0.0077, P < 0.05). Mantel tests indicated that edaphic variables and vegetation factors showed significant correlations to the beta diversity of fungal community only in degraded meadow, suggesting soil and vegetation heterogeneity both contributed to the variation of fungal community in that system. Correspondingly, a novel phylogenetic null model analysis demonstrated that environmental selection was enhanced in the fungal community assembly process during meadow degradation. Interestingly, dispersal limitation was also enhanced for the fungal community in the degraded meadow, and its relative contribution to other assembly process (i.e. selection and drift) showed a significant linear increase with spatial distance, suggesting that dispersal limitation played a greater role as distance increased. Our findings indicated the spatial scaling of the fungal community is altered during meadow degradation by both niche selec-tion and dispersal limitation. This study provides a new perspective for the assessment of soil microbial responses to vegetation changes in alpine areas. (c) 2021 Elsevier B.V. All rights reserved. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/46766]  |
| 专题 | 生态环境研究中心_城市与区域生态国家重点实验室 |
| 作者单位 | 1.Beijing Forestry Univ, Sch Ecol & Nat Conservat, Beijing 100083, Peoples R China 2.Hohhot Meteorol Bur, Hohhot 010020, Peoples R China 3.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hu, Baoan,Zhang, Zhijie,Han, Hairong,et al. The Grain for Green Program Intensifies Trade-Offs between Ecosystem Services in Midwestern Shanxi, China[J]. REMOTE SENSING,2021,798:-. |
| APA | Hu, Baoan.,Zhang, Zhijie.,Han, Hairong.,Li, Zuzheng.,Cheng, Xiaoqin.,...&Wu, Huifeng.(2021).The Grain for Green Program Intensifies Trade-Offs between Ecosystem Services in Midwestern Shanxi, China.REMOTE SENSING,798,-. |
| MLA | Hu, Baoan,et al."The Grain for Green Program Intensifies Trade-Offs between Ecosystem Services in Midwestern Shanxi, China".REMOTE SENSING 798(2021):-. |
入库方式： OAI收割
来源：生态环境研究中心
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