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题名: Manipulating nutrient limitation using modified local soils: A case study at Lake Taihu (China)
作者: Wang, Lijing; Pan, Gang; Shi, Wenqing; Wang, Zhibin; Zhang, Honggang
刊名: WATER RESEARCH
出版日期: 2016-09-15
卷号: 101, 期号:0, 页码:25-35
DOI: 10.1016/j.watres.2016.05.055
部门归属: 环境纳米材料实验室
英文摘要: The effect of geo-engineering materials of chitosan modified local soil (MLS) on nutrient limitation was studied in comparable whole ponds in Lake Taihu in October 2013. After 20 kg MLS were sprayed in the whole water pond (400 m(2)), the chlorophyll-a (Chl-a) concentration was decreased from 42 to 18 mu g L-1 within 2 h and remained below 20 mu g L-1 in the following 15 months, while the average Chl-a was 36 mu g L-1 in the control pond throughout the experiment. In situ nutrient addition bioassay experiments indicated that the nutrient limitation was shifted from nitrogen (N) and phosphorus (P) co-limitation to P limitation after MLS treatment from October 2013 to March 2014 compared to the control pond. In the cyanobacterial bloom season of June 2014, N and P co-limitation remained and N was the primary limiting nutrient and P was a secondary one in the control pond where phytoplankton biomass showed significant increase by N addition and further increase by N P additions, while both N and P became the limiting nutrient for phytoplankton growth where only combined N and P additions showed significant Chl-a stimulation in the treatment pond. In the next summer (June 2014), a cyanobacteria-dominated state still remained in the control pond but chlorophytes, bacillariophytes and cyanophytes distributed equally and submerged vegetation was largely restored in the treatment pond. Meanwhile, the upper limiting concentration of DIN was enhanced from 0.8 to 1.5 mg L-1 and SRP from 0.1 to 0.3 mg L-1 compared to the control pond. This study indicates that nutrient limitation can be manipulated by using MLS technology. (C) 2016 Elsevier Ltd. All rights reserved.
收录类别: SCI
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内容类型: 期刊论文
URI标识: http://ir.rcees.ac.cn/handle/311016/35996
Appears in Collections:环境纳米材料实验室_期刊论文

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Recommended Citation:
Wang, Lijing,Pan, Gang,Shi, Wenqing,et al. Manipulating nutrient limitation using modified local soils: A case study at Lake Taihu (China)[J]. WATER RESEARCH,2016,101(0):25-35.
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