干旱区生态环境知识资源中心(Arid): Trophic status of a shallow lake in Inner Mongolia: long-term, seasonal, and spatial variation

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DOI	10.1016/j.ecolind.2023.111167
	Trophic status of a shallow lake in Inner Mongolia: long-term, seasonal, and spatial variation
	Yu, Haifeng; Shi, Xiaohong; Wang, Shihuan; Zhao, Shengnan; Sun, Biao; Liu, Yu; Yang, Zhaoxia
通讯作者	Shi, XH
来源期刊	ECOLOGICAL INDICATORS
ISSN	1470-160X
EISSN	1872-7034
出版年	2023
卷号	156
英文摘要	The study of lake-trophic status drivers and their variable effects over space and time can assist in the management of lake eutrophication. Winter dynamics in lake trophic status are rarely evaluated, yet they could vary drastically from the more commonly sampled summer patterns. This represents a key blindspot in our knowledge because ice sheets affect nutrient distribution (e.g., nitrogen and phosphorus), light infiltration (translucency), and phytoplankton propagation (Chl-a concentration). We examined long-term (2011-2020) changes in the trophic status (trophic level index; TLI) of Lake Wuliangsuhai, a shallow lake situated in a cold and arid region, using Generalized Additive Models (GAMs). The results suggested a significant decrease in eutrophication of Wuliangsuhai Lake over the study period, with TLI decreasing from 61.7 (moderately eutrophic) in 2011 to 49.9 (mesotrophic) in 2020. TLI was significantly higher over winter (p < 0.05), with the rank of seasons in terms of TLI of: winter (58.7) > summer (54.7) > autumn (54.2) > spring (54.0). TLI of the ice-covered period (58.7) significantly exceeded that of the ice-free period (54.3) (p < 0.05). There were also significant spatial differences in TLI (p < 0.05). Factors driving the spatial and temporal heterogeneity in lake trophic levels included the water supplement, water depth, water temperature, external inputs of nutrients, hydrodynamic conditions (flow velocity), distribution of phragmites, and the location of the main diversion channel.
英文关键词	Eutrophication Inner Mongolia Trophic level index (TLI) Nonlinear relationship Wuliangsuhai Lake Generalized additive model (GAM) Environmental factors
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:001109612200001
WOS关键词	WATER-QUALITY ; EUTROPHICATION ; NITROGEN ; PHOSPHORUS ; TRENDS ; TAIHU ; AREA
WOS类目	Biodiversity Conservation ; Environmental Sciences
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/395976
推荐引用方式 GB/T 7714	Yu, Haifeng,Shi, Xiaohong,Wang, Shihuan,et al. Trophic status of a shallow lake in Inner Mongolia: long-term, seasonal, and spatial variation[J],2023,156.
APA	Yu, Haifeng.,Shi, Xiaohong.,Wang, Shihuan.,Zhao, Shengnan.,Sun, Biao.,...&Yang, Zhaoxia.(2023).Trophic status of a shallow lake in Inner Mongolia: long-term, seasonal, and spatial variation.ECOLOGICAL INDICATORS,156.
MLA	Yu, Haifeng,et al."Trophic status of a shallow lake in Inner Mongolia: long-term, seasonal, and spatial variation".ECOLOGICAL INDICATORS 156(2023).