Contrasting effects of nitrogen and phosphorus additions on nitrogen competition between coniferous and broadleaf seedlings
文献类型：期刊论文
| 作者 | Liu, Qianyuan; Song, Minghua; Kou, Liang; Li, Qingkang; Wang, Huimin |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2023-02-25 |
| 卷号 | 861页码:160661 |
| 关键词 | N uptake Species interaction Nutrient addition Competitive response |
| ISSN号 | 1879-1026 |
| DOI | 10.1016/j.scitotenv.2022.160661 |
| 产权排序 | 2 |
| 文献子类 | Article |
| 英文摘要 | Nitrogen (N) is a major element limiting plant growth and metabolism. Nitrogen addition can influence plant growth, N uptake, and species interactions, while phosphorus (P) addition may affect N acquisition. However, knowledge of how nutrient availability influences N uptake and species interactions remains limited and controversial. Here, pot ex-periments were conducted for 14 months, in which conifers (Pinus massoniana and Pinus elliottii) and broadleaved trees (Michelia maudiae and Schima superba) were planted in monoculture or mixture, and provided additional N and Pin a full-factorial design. Nitrogen addition increased the biomass, but P addition did not significantly affect the biomass of the four subtropical species. Combined N and P (NP) addition had no additive effect on plant biomass over N addition. Total plant biomass was significantly positively correlated to root traits (branching intensity and root tissue density) and leaf traits (net photosynthetic rate, stomatal conductance, and transpiration rate), but negatively correlated to root diameter in response to nutrient addition. Plant uptake rates of NH4+ or NO3- were not altered by N addition, but P or NP additions decreased NH4+ uptake rates and increased NO3- uptake rates. Neighboring conifers significantly inhibited NH4+ and NO3- uptake rates of the two broadleaf species, but neighboring broadleaves had no effects on the N uptake rates of pine species. The effects of nutrient additions on interspecific interactions differed among species. Nitrogen addition altered the interaction of P. elliottii and M. maudiae from neutral to competition, while P addition altered the interaction of P. massoniana and M. maudiae from neutral to favorable effects. Increasing nutrient availabil-ity switched the direction of interspecific interaction in favor of pines. This study provides insights into forest manage-ment for productivity improvement and optimizing the selection of broadleaf species regarding differences in soil fertility of subtropical plantations. |
| 学科主题 | Environmental Sciences & Ecology |
| WOS关键词 | INTERSPECIFIC COMPETITION ; POSITIVE INTERACTIONS ; EUROPEAN BEECH ; ATMOSPHERIC NITROGEN ; FAGUS-SYLVATICA ; FINE ROOTS ; PLANT ; GROWTH ; AVAILABILITY ; RESPONSES |
| WOS研究方向 | Environmental Sciences & Ecology |
| 出版者 | ELSEVIER |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/193847]  |
| 专题 | 千烟洲站森林生态系统研究中心_外文论文 |
| 作者单位 | 1.Chinese Academy of Sciences 2.Hebei Normal University 3.Institute of Geographic Sciences & Natural Resources Research, CAS |
| 推荐引用方式 GB/T 7714 | Liu, Qianyuan,Song, Minghua,Kou, Liang,et al. Contrasting effects of nitrogen and phosphorus additions on nitrogen competition between coniferous and broadleaf seedlings[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2023,861:160661. |
| APA | Liu, Qianyuan,Song, Minghua,Kou, Liang,Li, Qingkang,&Wang, Huimin.(2023).Contrasting effects of nitrogen and phosphorus additions on nitrogen competition between coniferous and broadleaf seedlings.SCIENCE OF THE TOTAL ENVIRONMENT,861,160661. |
| MLA | Liu, Qianyuan,et al."Contrasting effects of nitrogen and phosphorus additions on nitrogen competition between coniferous and broadleaf seedlings".SCIENCE OF THE TOTAL ENVIRONMENT 861(2023):160661. |
入库方式： OAI收割
来源：地理科学与资源研究所
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