KMS Institute of soil and water conservation Chinese Academy of Sciences
| Soil erosion-related dynamics of soil bacterial communities and microbial respiration | |
Xiao, Haibing1; Li, Zhongwu1,2; Chang, Xiaofeng1; Huang, Jinquan3; Nie, Xiaodong2; Liu, Chun2; Liu, Lin1 ; Wang, Danyang2; Dong, Yuting1,4; Jiang, Jieyu2; Li, ZW (reprint author), CAS & MWR, State Key Lab Soil Eros & Dryland Farming Loess P, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China.
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| 文章类型 | Article |
| 2017 | |
| 发表期刊 | APPLIED SOIL ECOLOGY
 |
| ISSN | 0929-1393 |
| 通讯作者邮箱 | lizw@hnu.edu.cn |
| 卷号 | 119页码:205-213 |
| 摘要 | Soil erosion can dramatically change physicochemical soil properties, but little is known about the responses of bacterial communities and microbial respiration to soil erosion. In this study, three sites (upslope, mid-slope and downslope) with different erosional and depositional characteristics were selected along three transects of abandoned land in the Qiaozi watershed of the Chinese Loess Plateau to evaluate the impacts of soil erosion on bacterial communities and microbial respiration. Samples of the topsoil (0-10 cm) and subsoil (10-20 cm), classified as Calcic Cambisols, were collected from these sites. The results showed that lower bacterial abundance was observed in the topsoil of the downslope site (7.58 x 10(8) copies g(-1) soil) relative to the upslope (9.32 x 10(8) copies g(-1) soil) and mid-slope (8.70 x 10(8) copies g(-1) soil) sites. However, no obvious change (P > 0.05) in the bacterial Shannon index and community composition was observed among the sites. Runoff-induced erosion and migration of sediment homogenized the bacterial communities along the eroded slopes. Soil microbial respiration in the topsoil of the downslope site (19.02 +/- 0.25 mg CO2-C kg(-1) soil d(-1)) was significantly (P < 0.05) higher than that of the upslope (15.12 +/- 1.07 mg CO2-C kg(-1) soil d(-1)) and mid-slope (17.75 +/- 0.73 mg CO2-C kg(-1) soil d(-1)) sites, indicating that the deposition of sediment and associated organic matter significantly increased the soil microbial respiration. Multiple stepwise regression analyses showed that available nitrogen was the main explanatory factor for the variation in soil microbial respiration in both the topsoil (60.2%, P = 0.009) and subsoil (80.3%, P = 0.002). Compared to the bacterial properties, the labile organic matter contributed more to the variation. Our work suggested that soil microbial respiration was primarily modulated by the quality of the organic matter. |
| 关键词 | Soil Erosion Soil Organic Matter Bacterial Community Bacterial Abundance Soil Microbial Respiration |
| 学科领域 | Agriculture |
| DOI | 10.1016/j.apsoil.2017.06.018 |
| URL | 查看原文 |
| 收录类别 | SCI |
| 出版地 | AMSTERDAM |
| 语种 | 英语 |
| WOS记录号 | WOS:000408882500025 |
| 出版者 | ELSEVIER SCIENCE BV |
| 项目资助者 | 'Hundred-talent Project' of the Chinese Academy of Sciences; National Natural Science Foundation of China [41271294, 41501298] ; 'Hundred-talent Project' of the Chinese Academy of Sciences; National Natural Science Foundation of China [41271294, 41501298] |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | sbir.nwafu.edu.cn/handle/361005/7915 |
| 专题 | 水保所科研产出--SCI_2017--SCI |
| 通讯作者 | Li, ZW (reprint author), CAS & MWR, State Key Lab Soil Eros & Dryland Farming Loess P, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China. |
| 作者单位 | 1.CAS & MWR, State Key Lab Soil Eros & Dryland Farming Loess P, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China 2.Hunan Univ, Coll Environm Sci & Engn, Changsha 410082, Hunan, Peoples R China 3.Yangtze River Sci Res Inst, Dept Soil & Water Conservat, Wuhan 430010, Hubei, Peoples R China 4.Yellow River Conservancy Commiss, Tianshui Soil & Water Conservat Expt Stn, Tianshui 741000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xiao, Haibing,Li, Zhongwu,Chang, Xiaofeng,et al. Soil erosion-related dynamics of soil bacterial communities and microbial respiration[J]. APPLIED SOIL ECOLOGY,2017,119:205-213. |
| APA | Xiao, Haibing.,Li, Zhongwu.,Chang, Xiaofeng.,Huang, Jinquan.,Nie, Xiaodong.,...&Li, ZW .(2017).Soil erosion-related dynamics of soil bacterial communities and microbial respiration.APPLIED SOIL ECOLOGY,119,205-213. |
| MLA | Xiao, Haibing,et al."Soil erosion-related dynamics of soil bacterial communities and microbial respiration".APPLIED SOIL ECOLOGY 119(2017):205-213. |
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