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首页> 外文期刊>Ecological indicators >Decade-long meteorological and water quality dynamics of northern Lake Dianchi and recommendations on algal bloom mitigation via key influencing factors identification
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Decade-long meteorological and water quality dynamics of northern Lake Dianchi and recommendations on algal bloom mitigation via key influencing factors identification

机译：北部滇池十年的气象和水质动态及对藻类绽放的推荐通过关键影响因素识别

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摘要

Worldwide extension of hazardous algal blooms (HABs) in lakes has threatened animal and human health, drinking water supply, and aquatic ecosystems. Although both climatic and water quality changes can give rise to HABs, specific contribution of each factor is often lake region dependent. In this study, data from intensive local sampling sites were introduced to identify the key influencing factors of HABs in northern Lake Dianchi, where the bloom is severer than the rest of the lake. Decade-long meteorological and water quality dynamics including HABs community changes at various sites were revealed. Both dry weight of the bloom biomass (DW) and Chlorophyll a concentration (Chl. a) were adopted as indicators to HABs. Spearman correlation analysis and multiple stepwise linear regression were respectively used to identify the individual and joint influencing factors of HABs. Efficiency of a condensed bloom biomass pumping strategy was evaluated on HABs mitigation, and the impact of changing nutrients measurement protocols was also analyzed. Results indicated that Chl. a rather than DW could better represent the extent of HABs among various sampling sites. Although both meteorological and water quality factors are responsible for HABs in northern Lake Dianchi when individually considered, it was water quality and particularly TN and TP that were the "game changer" in HABs mitigation when joint influencing factors were concerned. The "pumping strategy" can only be adopted as an emergency method, and recommendations on nutrients reduction should be based on the conventional measuring protocol that includes particulate nutrients as well.
机译：湖泊危险藻类盛会（HABS）的全球延伸威胁动物和人类健康，饮用水和水生生态系统。虽然气候和水质的变化都会产生HABS，但每个因素的具体贡献往往依赖于湖泊区。在这项研究中，引入了来自强化当地抽样网站的数据，以确定北部滇池的HABS的关键影响因素，盛开的比湖的其余部分更严重。揭示了十年长的气象和水质动态，包括HABS社区在各种地点的变化。盛开生物质（DW）的干重和叶绿素的干重均被用作汉族人物的指标。 Spearman相关性分析和多个逐步线性回归分别用于识别HABS的个体和联合影响因素。在HAB缓解上评估了浓缩盛开生物量泵浦策略的效率，并分析了不断变化的营养测量方案的影响。结果表明chl。 a而不是dw可以更好地代表各种抽样网站之间的habs的程度。虽然气象和水质因素都是北部滇池的HABS时，当单独考虑时，它是水质，特别是TN和TP，即在接触影响因素所关注的情况下，HABS缓解的“游戏更换者”。 “泵送策略”只能被采用作为应急方法，并且对营养物质的建议应基于包括颗粒营养素的常规测量方案。

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  • 来源
    《Ecological indicators》 |2020年第8期|106425.1-106425.13|共13页
  • 作者

    Wang Jing-Han; Wang Ya-Nan; Dao Guo-Hua; Du Jing-Song; Han Ya-Ping; Hu Hong-Ying;

  • 作者单位

    Dalian Univ Technol Sch Bioengn Dalian 116024 Peoples R China|Tsinghua Univ Sch Environm State Environm Protect Key Lab Microorganism Appl Environm Simulat & Pollut Control State Key Joint Beijing 100084 Peoples R China|Dalian SEM Bioengineer & Biotech Co Ltd Dalian 116620 Peoples R China;

    Dalian Univ Technol Sch Bioengn Dalian 116024 Peoples R China;

    Tsinghua Univ Sch Environm State Environm Protect Key Lab Microorganism Appl Environm Simulat & Pollut Control State Key Joint Beijing 100084 Peoples R China;

    Ecol Res Inst Lake Dianchi Kunming 650034 Yunnan Peoples R China;

    Ecol Res Inst Lake Dianchi Kunming 650034 Yunnan Peoples R China;

    Tsinghua Univ Sch Environm State Environm Protect Key Lab Microorganism Appl Environm Simulat & Pollut Control State Key Joint Beijing 100084 Peoples R China|Tsinghua Berkeley Shenzhen Inst Shenzhen Environm Sci & New Energy Technol Engn L Shenzhen 518055 Peoples R China;

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  • 正文语种 eng
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  • 关键词

    Hazardous algal bloom; Meteorological dynamics; Water quality; Community structure; Mitigation strategy; Northern Lake Dianchi;

    机译：危险藻类绽放;气象动态;水质;社区结构;缓解策略;北部滇池;

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