Exploring change of internal nutrients cycling in a shallow lake: A   dynamic nutrient driven phytoplankton model

doi:10.1016/j.ecolmodel.2015.06.025

CORC > 北京大学 > 环境科学与工程学院

	Exploring change of internal nutrients cycling in a shallow lake: A dynamic nutrient driven phytoplankton model
	Li, Yuzhao ; Liu, Yong ; Zhao, Lei ; Hastings, Alan ; Guo, Huaicheng
刊名	ECOLOGICAL MODELLING
	2015
关键词	Nutrient cycling Sediment release Bayesian inference Dynamic Modeling Eutrophication Regime shift CASCADING TROPHIC INTERACTIONS AQUATIC BIOGEOCHEMICAL MODELS CHESAPEAKE BAY HYPOXIA BLUE-GREEN-ALGAE FRESH-WATER EUTROPHICATION MODEL BAYESIAN CALIBRATION PHOSPHORUS DYNAMICS NITROGEN LOADS REGIME SHIFTS
DOI	10.1016/j.ecolmodel.2015.06.025
英文摘要	Lake eutrophication is associated with excessive nutrient enrichment and unobserved internal nutrient cycling. In spite of advances in understanding the role of nitrogen (N) and phosphorus (P) cycling in eutrophication, the relative importance of N and P limitation and release from sediment is still an open question. The complicated interaction between N and P cycling and external driving factors leads to dynamics in N or P limitation patterns and internal release that change over time. We developed a nutrient-driven model of phytoplankton dynamics including the critical nutrient cycling processes. It was fitted using Bayesian inference to explore the roles of N and P inputs from external sources, net sediment release, and internal dynamics in Lake Yilong, a shallow eutrophic lake in China. The model provided a good fit to observations, with time-varying parameters required to fit time-dependent variations in the sediment release process. The results demonstrated that, in Lake Yilong, the pattern of nutrient limitation showed a transformation from P limitation to N and P co-limitation after an observed regime shift occurred in 2008. After the shift in 2008, sediment release had an increasing influence on N and P supply, which could make eutrophication remediation more difficult. For Lake Yilong, it would not be possible to reverse eutrophication solely with watershed nutrient load reduction so in-lake manipulation of physical chemical conditions to inhibit the sediments release should also be considered. (C) 2015 Elsevier B.V. All rights reserved.; National Natural Science Foundation of China [41222002]; National Basic Research Program of China [2015CB458900]; US Army Research Office [W911NF-13-1-0305]; Collaborative Innovation Center for Regional Environmental Quality; SCI(E); EI; ARTICLE; yongliu@pku.edu.cn; amhastings@ucdavis.edu; 137-148; 313
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/415773]
专题	环境科学与工程学院
推荐引用方式 GB/T 7714	Li, Yuzhao,Liu, Yong,Zhao, Lei,et al. Exploring change of internal nutrients cycling in a shallow lake: A dynamic nutrient driven phytoplankton model[J]. ECOLOGICAL MODELLING,2015.
APA	Li, Yuzhao,Liu, Yong,Zhao, Lei,Hastings, Alan,&Guo, Huaicheng.(2015).Exploring change of internal nutrients cycling in a shallow lake: A dynamic nutrient driven phytoplankton model.ECOLOGICAL MODELLING.
MLA	Li, Yuzhao,et al."Exploring change of internal nutrients cycling in a shallow lake: A dynamic nutrient driven phytoplankton model".ECOLOGICAL MODELLING (2015).