Critical nutrient thresholds needed to control eutrophication and synergistic interactions between phosphorus and different nitrogen sources
文献类型：期刊论文
| 作者 | Zeng, Qinghui; Qin, Lihuan; Bao, Linlin; Li, Yayong; Li, Xuyong |
| 刊名 | ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
 |
| 出版日期 | 2016-10 |
| 卷号 | 23期号:20页码:21008-21019 |
| 关键词 | Nutrient threshold Synergistic interaction Multiple nutrient limitations Ammonium Eutrophication Bioassays |
| 英文摘要 | Eutrophication is one of the greatest threats to global freshwater ecosystems. The phytoplankton responses to nutrient inputs vary in different water bodies, so it is particularly important to determine the nutrient thresholds and synergistic interactions between nutrients in different freshwater ecosystems. Field sampling and bioassay experiments were conducted to determine the thresholds of soluble reactive phosphorus (SRP), nitrate-nitrogen (NO3-N), and ammonium-nitrogen (NH4-N) in Miyun Reservoir. A separate nutrient addition bioassay was designed to assess the synergistic interactions between these nutrients. Chlorophyll a (Chl a) concentrations were used to estimate phytoplankton biomass. The results showed the following: (1) nutrient threshold bioassay indicated that eutrophication thresholds of SRP, NO3-N, and NH4-N should be targeted at below 0.04 mg P L-1, 0.5 mg N L-1, and 0.3 mg N L-1, respectively, to limit the growth of phytoplankton. (2) The stimulatory effect of "NH4-N plus P" on phytoplankton biomass was greater than "NO3-N plus P" at the same N concentration, and "NH4-N plus NO3-N" did not show such associated stimulatory effect as "NH4-N plus P" or "NO3-N plus P". (3) The average concentrations of total phosphorus (TP), NO3-N, and NH4-N in Miyun Reservior were 0.017 mg P L-1, 0.620 mg N L-1, and 0.143 mg N L-1, respectively. The reservoir-wide average Chl a is below 20 mu g L-1 on an annual basis. (4) Ammonium was an important factor for the growth of phytoplankton and inputs of both NH4-N and NO3-N should be reduced to control bloom formation. Our findings imply that although P load reduction is important, appropriate reductions of all forms of N in watershed is recommended in the nutrient management strategy for Miyun Reservoir. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/35547]  |
| 专题 | 生态环境研究中心_城市与区域生态国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Zeng, Qinghui,Qin, Lihuan,Bao, Linlin,et al. Critical nutrient thresholds needed to control eutrophication and synergistic interactions between phosphorus and different nitrogen sources[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2016,23(20):21008-21019. |
| APA | Zeng, Qinghui,Qin, Lihuan,Bao, Linlin,Li, Yayong,&Li, Xuyong.(2016).Critical nutrient thresholds needed to control eutrophication and synergistic interactions between phosphorus and different nitrogen sources.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,23(20),21008-21019. |
| MLA | Zeng, Qinghui,et al."Critical nutrient thresholds needed to control eutrophication and synergistic interactions between phosphorus and different nitrogen sources".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 23.20(2016):21008-21019. |
入库方式： OAI收割
来源：生态环境研究中心
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。