Effects of nitrogen addition and watering on soil seed bank germination in a semiarid grassland on the Loess Plateau of China
文献类型：期刊论文
| 作者 | Niu, Furong2; Huo, Lijuan1,2; Wang, Zhi1,2; Liu, Jinbiao2,4; Gao, Zhijuan2,3; Li, Min1,2; Xu, Bingcheng1,2 |
| 刊名 | LAND DEGRADATION & DEVELOPMENT
 |
| 出版日期 | 2022-09-23 |
| 页码 | 14 |
| ISSN号 | 1085-3278 |
| 关键词 | atmospheric nitrogen deposition dryland grassland loess hilly-gully region seed germination soil moisture time-to-event analysis |
| DOI | 10.1002/ldr.4449 |
| 通讯作者 | Xu, Bingcheng(bcxu@ms.iswc.ac.cn) |
| 英文摘要 | Elevated atmospheric nitrogen (N) deposition has caused many adverse effects on ecosystem services. However, the impacts of N deposition and its interaction with soil moisture on soil seed bank remain largely unknown in semiarid grasslands. Here, we quantified the effects of two soil water regimes (HW: watered to field capacity every day; LW: watered to field capacity every 2 days) and two types of N addition (NO3--N and NH4+-N) with different levels on seed bank germination in two separate trials in April and July 2015 in a semiarid grassland on the Loess Plateau, China. Results showed seed bank germination was remarkably inhibited under the LW soil water regime. Species composition of emerged seedlings significantly differed between the two soil water regimes. N addition promoted seed bank germination under the HW soil water regime. This promoting effect was less noticeable under the LW, while still significant in the high level of NH4+-N in the July trial. N addition did not alter the species composition of emerged seedlings. Overall, this study suggests that soil moisture controls soil seed bank germination and species composition of emerged seedlings. Soil N addition, for example, by N deposition, greatly promotes soil seed bank germination when soil moisture is high (e.g., during seed germination season in July), and still marginally facilitates seed germination under low soil moisture conditions (e.g., at the beginning of the growing season in April). N deposition may therefore deplete the grassland soil seed bank if other processes (e.g., seed input) remain unchanged. |
| WOS关键词 | SPECIES-DIVERSITY ; CLIMATE-CHANGE ; DEPOSITION ; RESPIRATION ; TEMPERATURE ; COMMUNITY ; RESPONSES ; FERTILIZATION ; PRECIPITATION ; ACIDIFICATION |
| 资助项目 | National Natural Science Foundation of China[41371509] ; National Natural Science Foundation of China[41771553] |
| WOS研究方向 | Environmental Sciences & Ecology ; Agriculture |
| 语种 | 英语 |
| 出版者 | WILEY |
| WOS记录号 | WOS:000860817300001 |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/185287]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Xu, Bingcheng |
| 作者单位 | 1.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling, Shaanxi, Peoples R China 2.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Xinong Rd 26, Yangling 712100, Shaanxi, Peoples R China 3.Beijing Ecotek Co Ltd, Beijing, Peoples R China 4.Heilongjiang Bayi Agr Univ, Coll Agron, Daqing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Niu, Furong,Huo, Lijuan,Wang, Zhi,et al. Effects of nitrogen addition and watering on soil seed bank germination in a semiarid grassland on the Loess Plateau of China[J]. LAND DEGRADATION & DEVELOPMENT,2022:14. |
| APA | Niu, Furong.,Huo, Lijuan.,Wang, Zhi.,Liu, Jinbiao.,Gao, Zhijuan.,...&Xu, Bingcheng.(2022).Effects of nitrogen addition and watering on soil seed bank germination in a semiarid grassland on the Loess Plateau of China.LAND DEGRADATION & DEVELOPMENT,14. |
| MLA | Niu, Furong,et al."Effects of nitrogen addition and watering on soil seed bank germination in a semiarid grassland on the Loess Plateau of China".LAND DEGRADATION & DEVELOPMENT (2022):14. |
入库方式： OAI收割
来源：地理科学与资源研究所
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