Spatial Variations of Subsurface Chlorophyll Maxima During Thermal Stratification in a Large, Deep Subtropical Reservoir
文献类型：期刊论文
| 作者 | Liu, Miao; Zhang, Yunlin; Shi, Kun; Melack, John; Zhang, Yibo; Zhou, Yongqiang; Zhu, Mengyuan; Zhu, Guangwei; Wu, Zhixu; Liu, Mingliang |
| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
 |
| 出版日期 | 2020 |
| 卷号 | 125期号:2 |
| 英文摘要 | Subsurface chlorophyll maxima (SCM) are found in stratified lakes, reservoirs, and oceans. Spatial variations of the SCM magnitude, depth, and thickness during stratification and related factors were examined in a large, deep subtropical reservoir, Lake Qiandaohu. Significant spatial differences in the SCM parameters were found throughout the lake as thermal stratification developed in the late spring of 2014. SCM depth and thickness were positively correlated with euphotic depth and mixed layer depth but negatively correlated with epilimnetic nutrient concentrations. SCM magnitude was negatively correlated with euphotic depth and mixed layer depth and positively correlated with epilimnetic nutrient concentrations. Seasonal variations in SCM differed among subregions of the lake, which were related to seasonal differences in environmental parameters. SCM (averaging 66.2 mg/m(2) in spring and 96.4 mg/m(2) in summer) accounted for about 82% of the total areal chlorophyll of the water column (T-chl), and the SCM magnitude was better correlated with T-chl than the surface chlorophyll concentration. This study contributes to understanding of factors causing spatial variations in of SCM in the deep subtropical lakes.Plain Language Summary In deep lakes or reservoirs, maximum chlorophyll concentrations often occur as subsurface chlorophyll maxima (SCM). In this study, a large and deep reservoir in China, Lake Qiandaohu, was selected to investigate the spatial and seasonal variations of the SCM. We used chlorophyll fluorescence profiles from 60 sites distributed across the lake in spring and summer in 2014 to determine SCM magnitude, depth, and thickness and to examine factors related to the variations. Higher water clarity, deeper mixing depth, and less epilimnetic nutrients led to lower SCM magnitude, thicker SCM thickness, and deeper SCM depth.Key PointsSubsurface chlorophyll maxima (SCM) had significant spatial differences in Lake Qiandaohu Light, mixing layer depth, and nutrients were related to the spatial pattern of SCM SCM magnitude correlated well with integrated chlorophyll through the water column |
| 源URL | [http://159.226.73.51/handle/332005/20164]  |
| 专题 | 中国科学院南京地理与湖泊研究所 |
| 推荐引用方式 GB/T 7714 | Liu, Miao,Zhang, Yunlin,Shi, Kun,et al. Spatial Variations of Subsurface Chlorophyll Maxima During Thermal Stratification in a Large, Deep Subtropical Reservoir[J]. JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,2020,125(2). |
| APA | Liu, Miao.,Zhang, Yunlin.,Shi, Kun.,Melack, John.,Zhang, Yibo.,...&Liu, Mingliang.(2020).Spatial Variations of Subsurface Chlorophyll Maxima During Thermal Stratification in a Large, Deep Subtropical Reservoir.JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,125(2). |
| MLA | Liu, Miao,et al."Spatial Variations of Subsurface Chlorophyll Maxima During Thermal Stratification in a Large, Deep Subtropical Reservoir".JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES 125.2(2020). |
入库方式： OAI收割
来源：南京地理与湖泊研究所
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