scholarly journals Variation trend of total phosphorus and its controlling factors in Lake Taihu, 2010-2017

2019 ◽  
Vol 31 (4) ◽  
pp. 919-929 ◽  
Author(s):  
WANG Hua ◽  
◽  
CHEN Huaxin ◽  
XU Zhao'an ◽  
LU Bingyan
Keyword(s):  
Total Phosphorus ◽  
Lake Taihu ◽  
Controlling Factors ◽  
Variation Trend

scholarly journals Water nutrient status and its controlling factors in the inflow tributaries of Xitiaoxi River, upper reaches of Lake Taihu basin

2015 ◽  
Vol 27 (2) ◽  
pp. 208-215
Author(s):  
WANG Huan ◽  
◽  
YUAN Xuyin ◽  
CHEN Hailong ◽  
XU Haiyan ◽  
...  
Keyword(s):  
Lake Taihu ◽  
Nutrient Status ◽  
Controlling Factors ◽  
Taihu Basin

Recovery of novel alkaline phosphatase-encoding genes (phoX) from eutrophic Lake Taihu

2014 ◽  
Vol 60 (3) ◽  
pp. 167-171 ◽  
Author(s):  
Jiangyu Dai ◽  
Dan Chen ◽  
Guang Gao ◽  
Xiangming Tang ◽  
Shiqiang Wu ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Alkaline Phosphatase ◽  
Total Phosphorus ◽  
Current Knowledge ◽  
Lake Taihu ◽  
Eutrophic Lake ◽  
Ecological Regions ◽  
Encoding Gene ◽  
Molecular Aspects ◽  
Encoding Genes

To expand current knowledge on the molecular aspects of alkaline phosphatase PhoX in shallow eutrophic freshwaters, we investigated the genetic diversity and abundance of the PhoX-encoding gene (phoX) in 4 ecological regions in Lake Taihu, China, following a gradient in total phosphorus concentrations ranging from hypereutrophic to mesotrophic. Bacterial phoX was heterogeneously distributed with the highest diversity in the eutrophic regions and the highest abundance in the mesotrophic Xukou Bay. The concentrations of total phosphorus and enzymatically hydrolyzable phosphorus determined the distribution of bacterial phoX in Lake Taihu. Most (70.8%) of the phoX-translated proteins had <90% similarity to the PhoX proteins in the GenBank database, suggesting the presence of novel phoX genotypes in Lake Taihu. The low overlap in phoX genotypes (15.8%) between Lake Taihu and some marine ecosystems, and the dominance of the translated proteins most similar to the Alphaproteobacteria-affiliated PhoX, demonstrate the uniqueness of PhoX in eutrophic freshwaters.

Influence of climate change and human activity on total nitrogen and total phosphorus: a case study of Lake Taihu, China

2020 ◽  
Vol 36 (2) ◽  
pp. 186-202 ◽  
Author(s):  
Xiaojuan Xu ◽  
Huiyu Liu ◽  
Fusheng Jiao ◽  
Yujia Ren ◽  
Haibo Gong ◽  
...  
Keyword(s):  
Climate Change ◽  
Human Activity ◽  
Total Nitrogen ◽  
Total Phosphorus ◽  
Lake Taihu

scholarly journals Analysis on the variation of total phosphorus concentrations and loads of inflow and outflow rivers from different water resources zones around Lake Taihu

2022 ◽  
Vol 34 (1) ◽  
pp. 74-89
Author(s):  
Li Qiongfang ◽  
◽  
Xu Shuhong ◽  
Chen Qihui ◽  
Jia Xiaowang ◽  
...  
Keyword(s):  
Water Resources ◽  
Total Phosphorus ◽  
Lake Taihu

scholarly journals Shallow Groundwater Quality and Its Controlling Factors in the Su-Xi-Chang Region, Eastern China

2020 ◽  
Vol 17 (4) ◽  
pp. 1267 ◽  
Author(s):  
Jianwei Bu ◽  
Ziyong Sun ◽  
Rui Ma ◽  
Yunde Liu ◽  
Xulong Gong ◽  
...  
Keyword(s):  
Groundwater Quality ◽  
Total Phosphorus ◽  
Best Management Practices ◽  
Rapid Development ◽  
Eastern China ◽  
Shallow Groundwater ◽  
Quality Standards ◽  
Economic Incentives ◽  
Controlling Factors ◽  
Watershed Scale

Understanding factors influencing groundwater quality is critical to the development of best management practices at the large watershed scale. In this study, the shallow groundwater (10–20 m depth) in the Su-Xi-Chang region, eastern China, was investigated as part of a monitoring program from 2007 to 2008 to analyze the regional groundwater quality as well as the hydrogeochemical processes and their controlling factors. Conventional physicochemical water parameters (pH, turbidity, electrical conductivity, dissolved oxygen, total phosphorus), major cations (Na+, Ca2+, Mg2+ and NH4+) and anions (Cl−, NO3− and SO42−) were measured. Hydrochemical methods and multivariate statistical methods were applied to analyze the hydrogeochemical signatures, origins, the similarities among the variables and to identify the main pollution sources in the groundwater. The results showed that (1) the concentrations of TDS (224.89–1086.70 mg/L) and turbidity (0.1–18.60 NTU) were higher than the class II groundwater quality standards in China and the WHO drinking water standards, (2) there were extremely high concentrations of ammonia (0.01–32.90 mg/L), with a mean value of 0.72 mg/L and (3) the nitrate concentrations (average value of 22.07 mg/L) exceeded the class III groundwater quality standards. The study also provided evidence that weathering, dissolution of carbonate, halite and silicate and cation exchange were the possible primary hydrogeochemical control mechanisms in the groundwater. The sources of ammonia, total phosphorus, sulfates and nitrates included rock–water interactions and anthropogenic activities. The groundwater administration of pollution sinks and sources, long-term legal frameworks and economic incentives should be improved to optimize watershed scale management in the context of rapid development in China.

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