Study of monthly variations in primary production and their relationship with environmental factors in Daya Bay based on a general additive model
Study of monthly variations in primary production and their relationship with environmental factors in Daya Bay based on a general additive model
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基于一般加性模型的大亚湾初级生产力月变化及其与环境因子的关系研究
DOI：
10.1007/s13131-018-1281-6
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发表时间：
2018
影响因子：
1.4
通讯作者：
Chen Xingqun
中科院分区：
文献类型：
--
作者：
Kang Jianhua;Huang Hao;Li Weiwen;Lin Yili;Chen Xingqun
根据2016年1 - 12月大亚湾海域的实测资料，分析了大亚湾海域初级生产力的水平和垂直分布及其月变化特征。利用广义加性模型（GAM）分析了PP与环境因子的关系。PP的水平分布存在明显的季节差异，垂直分布呈相对一致的单峰型。年平均为182.77 mg/（m2.h），月平均PP（以碳计）为48.03 ~ 390.56 mg/（m2.h）。PP在5月最高，11月最低。此外，PP的总体趋势是春季>夏季>冬季>秋季，春季PP约为秋季PP的3倍。GAM分析表明，温度、底层盐度、浮游植物和光合有效辐射（PAR）与PP的相关性不显著，而经度、深度、表层盐度、叶绿素（Chla）和透明度与PP的相关性显著。总体而言，本文提出的结果表明，季风变化和陆地和近海水域系统与PP变化的环境因素有着至关重要的影响。
In this study, the horizontal and vertical distribution of primary production (PP) and its monthly variations were described based on field data collected from the Daya Bay in January–December of 2016. The relationships between PP and environmental factors were analyzed using a general additive model (GAM). Significant seasonal differences were observed in the horizontal distribution of PP, while vertical distribution showed a relatively consistent unimodal pattern. The monthly average PP (calculated by carbon) ranged from 48.03 to 390.56 mg/(m2·h), with an annual average of 182.77 mg/(m2·h). The highest PP was observed in May and the lowest in November. Additionally, the overall trend in PP was spring>summer>winter>autumn, and spring PP was approximately three times that of autumn PP. GAM analysis revealed that temperature, bottom salinity, phytoplankton, and photosynthetically active radiation (PAR) had no significant relationships with PP, while longitude, depth, surface salinity, chlorophylla(Chla) and transparency were significantly correlated with PP. Overall, the results presented herein indicate that monsoonal changes and terrestrial and offshore water systems have crucial effects on environmental factors that are associated with PP changes.