Plant nitrogen and phosphorus utilization under invasive pressure in a montane ecosystem of tropical China
文献类型:期刊论文
作者 | Hu, Chao-Chen; Lei, Yan-Bao; Tan, Yun-Hong; Sun, Xin-Chao; Xu, Hao; Liu, Cong-Qiang; Liu, Xue-Yan |
刊名 | JOURNAL OF ECOLOGY |
出版日期 | 2019 |
卷号 | 107期号:1页码:372-386 |
ISSN号 | 0022-0477 |
关键词 | Isotopic Composition Global Patterns Nutrient Concentrations Mycorrhizal Fungi Natural-abundance Fresh-water Soil Ammonium Nitrate Forest |
DOI | 10.1111/1365-2745.13008 |
英文摘要 | 1. Exotic plant invasion has been changing the vegetation composition and function of terrestrial ecosystems. Nitrogen (N) and phosphorus (P) are often the limiting nutrients for terrestrial plants. However, under invasive pressure, in situ plant N and P usage mechanisms remain poorly understood but are pivotal for a better understanding of plant invasion and coexistence in invaded ecosystems. 2. Nitrogen and P concentrations, natural N-15 abundance (delta N-15 values) were investigated in leaves and soils under different invasive pressures (here expressed as the biomass percentages of invasive plants in each plot) for two invasive species (Chromolaena odorata and Ageratina adenophora) in Xishuangbanna in tropical China. 3. Soil N and P concentrations revealed the relatively N-rich but P-poor status of our study site. Under invasion, soil inorganic N (dominated by ammonium) and available P did not increase significantly. The leaf N and P of invasive plants increased, while leaf N increased but P decreased for native species. Natural delta N-15 mass balance between leaves and soil inorganic N sources revealed that ammonium dominated N utilization in both natives and invaders. Invasive plants showed ammonium utilization with increasing leaf N levels, while native plants under no invasion showed nitrate utilization with increasing leaf N levels. 4. Synthesis. Increased soil ammonium availability contributed to preferential ammonium utilization by invasive plants and elevated ammonium utilization in natives, but the P competition of natives decreased in invaded ecosystems. These novel insights into nutrient dynamics in invaded ecosystems enhance our understanding of plant invasion and coexistence mechanisms. |
学科主题 | Plant Sciences ; Environmental Sciences & Ecology |
语种 | 英语 |
WOS记录号 | WOS:000459070600031 |
源URL | [http://ir.xtbg.org.cn/handle/353005/11229] |
专题 | 西双版纳热带植物园_2012年后新成立研究组 西双版纳热带植物园_支撑系统 |
作者单位 | 1.[Hu, Chao-Chen 2.Sun, Xin-Chao 3.Xu, Hao 4.Liu, Cong-Qiang 5.Tianjin Univ, Inst Surface Earth Syst Sci, Weijin Rd 92, Tianjin 300072, Peoples R China 6.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu, Sichuan, Peoples R China 7.[Lei, Yan-Bao 8.Chinese Acad Sci, Ctr Integrat Conservat, Xishuangbanna Trop Bot Garden, Mengla 666303, Yunnan, Peoples R China 9.[Liu, Cong-Qiang 10.Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang, Guizhou, Peoples R China |
推荐引用方式 GB/T 7714 | Hu, Chao-Chen,Lei, Yan-Bao,Tan, Yun-Hong,et al. Plant nitrogen and phosphorus utilization under invasive pressure in a montane ecosystem of tropical China[J]. JOURNAL OF ECOLOGY,2019,107(1):372-386. |
APA | Hu, Chao-Chen.,Lei, Yan-Bao.,Tan, Yun-Hong.,Sun, Xin-Chao.,Xu, Hao.,...&Liu, Xue-Yan.(2019).Plant nitrogen and phosphorus utilization under invasive pressure in a montane ecosystem of tropical China.JOURNAL OF ECOLOGY,107(1),372-386. |
MLA | Hu, Chao-Chen,et al."Plant nitrogen and phosphorus utilization under invasive pressure in a montane ecosystem of tropical China".JOURNAL OF ECOLOGY 107.1(2019):372-386. |
入库方式: OAI收割
来源:西双版纳热带植物园
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