Establishing eutrophication assessment standards for four lake regions, China

Huo, Shouliang; Ma, Chunzi; Xi, Beidou; Su, Jing; Zan, Fengyu; Ji, Danfeng; He, Zhuoshi

doi:10.1016/s1001-0742(12)60250-2

Cited by 59 publications

(37 citation statements)

References 23 publications

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“…Our investigation showed that TP, TN, Secchi depth (SD), COD and Chl‐ a are all critical factors reflecting the eutrophication status of the lakes. Especially, Chl‐ a is an indicator of phytoplankton biomass in the lakes, and therefore Chl‐ a was used as the primary estimator of the algal biomass and the standard index in the assessment of classification standard on lake eutrophication (Carlson, ; Huo et al, ). In order to clarify the pollution status of the studied lakes, the trophic status index (TSI) was first obtained according to an identical calculation method based on the parameters TP, TN, SD, COD and Chl‐ a.…”

Section: Resultsmentioning

confidence: 99%

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Characterization and sources of dissolved and particulate phosphorus in 10 freshwater lakes with different trophic statuses in China by solution ³¹P nuclear magnetic resonance spectroscopy

Zhang

Feng

Chen

et al. 2018

Ecological Research

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Information on dissolved phosphorus (DP) and particulate phosphorus (PP) is essential to evaluate the P dynamics and control eutrophication. In this work, DP and PP in 10 freshwater lakes representing various trophic statuses were analyzed by solution 31P nuclear magnetic resonance spectroscopy. The results indicated that the predominant forms of DP and PP were orthophosphate (Ortho‐P) and monoester phosphate (Mono‐P). There was a greater concentration of Ortho‐P and Mono‐P in the water and particulate matter of medium‐eutriphic lakes than in lightly eutriphic or mesotrophic lakes. α‐Glycerophophate (2.7–32.5%), β‐glycerophosphate (1.3–23.4%), guanosine 2′Mono‐P (20.2–29.3%), inositol hexakisphosphate (IHP) (8.3–36.4%) and nicotinamide adenine dinucleotide (NAD) (17.3–35.9%) were identified as the major chemical forms of Mono‐P in water and particulate matter, which originate mainly from the degradation of labile diesters, aquatic/microbial sources and a combination of terrestrial and aquatic/microbial sources. Diester phosphate (Di‐P) was dominated by teichoic acid (0.5–14.8%) and deoxyribonucleic acid (DNA) (0.6–17.7%), which originated from aquatic/microbial sources. Moreover, correlation analysis showed that dissolved Mono‐P in water and particulate matter had a positive correlation with chlorophyll‐a (Chl‐a), which indicated their potential bioavailability for algal activity. pH was a crucial parameter to control Di‐P, pyrophosphate (Pyro‐P) and polyphosphate (Poly‐P) in water. Mono‐P/PPs showed a positive correlation with Chl‐a (R2 = 0.459), total phosphorus (TP) (R2 = 0.586) and the trophic status index (R2 = 0.588), which suggested that particulate Mono‐P can potentially contribute to lake eutrophication. Both Ortho‐P and Mono‐P were major contributors of P nutrients for algae, and therefore source control and new techniques are needed for reducing eutrophication.

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Section: Resultsmentioning

confidence: 99%

“…TLI( j ) is the TSI of Chl‐ a , TP, TN, SD, or COD; W j is the relative weight of TSI. Meanwhile, the classification details of the trophic statuses of lakes were obtained (Huo et al, ).…”

Section: Resultsmentioning

confidence: 99%

Characterization and sources of dissolved and particulate phosphorus in 10 freshwater lakes with different trophic statuses in China by solution ³¹P nuclear magnetic resonance spectroscopy

Zhang

Feng

Chen

et al. 2018

Ecological Research

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“…Thus, biological measurements are needed to understand what organisms are present and how they interact. Chlorophyll a is a key component in the process of photosynthesis and can measure algal abundance even if non-algal organic and inorganic particles are present [48]. Therefore, it is considered to be a very good measure of the presence of phytoplankton in a lake or reservoir ecosystem [128].…”

Section: Measurements and Methodsmentioning

confidence: 99%

Sustainable Management of Eutrophic Lakes and Reservoirs

Wagner¹,

Erickson²

2017

JEP

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Eutrophication of lakes and reservoirs is a major water quality problem that poses significant environmental, economic and social threats around the world. Monitoring and managing lakes and reservoirs to prevent or limit eutrophication, therefore, has significant value. The literature has been reviewed to study ecological engineering and management methods that have been and can be applied to improve water quality. Ecological engineering has the potential to be utilized to improve the design and operation of lakes and reservoirs through monitoring and active management of biological, chemical and physical components. Phosphorus concentrations can be reduced by effective and sustainable management practices to improve water quality.

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“…In order to understand the trophic states of lakes, a comprehensive trophic level index (TLI) based on Chla concentrations [22] was used to estimate trophic state as follows:…”

Section: Trophic Level Indexmentioning

confidence: 99%

Chlorophyll-A Prediction of Lakes with Different Water Quality Patterns in China Based on Hybrid Neural Networks

Sha

Wang

2017

Water

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Abstract:One of the most important water quality problems affecting lakes and reservoirs is eutrophication, which is caused by multiple physical and chemical factors. As a representative index of eutrophication, the concentration of chlorophyll-a has always been a key indicator monitored by environmental managers. The most influential factors on chlorophyll-a may be dependent on the different water quality patterns in lakes. In this study, data collected from 27 lakes in different provinces of China during 2009-2011 were analyzed. The self-organizing map (SOM) was first applied on the datasets and the lakes were classified into four clusters according to 24 water quality parameters. Comparison amongst the clusters revealed that Cluster I was the least polluted and at the lowest trophic level, while Cluster IV was the most polluted and at the highest trophic level. The genetic algorithm optimized back-propagation neural network (GA-BPNN) was applied to each lake cluster to select the most influential input variables for chlorophyll-a. The results of the four clusters showed that the performance of GA-BPNN was satisfied with nearly half of the input variables selected from the predictor pool. The selected factors varied for the lakes in different clusters, which indicates that the control for eutrophication should be separate for lakes in different provinces of one country.

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Establishing eutrophication assessment standards for four lake regions, China

Cited by 59 publications

References 23 publications

Characterization and sources of dissolved and particulate phosphorus in 10 freshwater lakes with different trophic statuses in China by solution ³¹P nuclear magnetic resonance spectroscopy

Characterization and sources of dissolved and particulate phosphorus in 10 freshwater lakes with different trophic statuses in China by solution ³¹P nuclear magnetic resonance spectroscopy

Sustainable Management of Eutrophic Lakes and Reservoirs

Chlorophyll-A Prediction of Lakes with Different Water Quality Patterns in China Based on Hybrid Neural Networks

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Establishing eutrophication assessment standards for four lake regions, China

Cited by 59 publications

References 23 publications

Characterization and sources of dissolved and particulate phosphorus in 10 freshwater lakes with different trophic statuses in China by solution 31P nuclear magnetic resonance spectroscopy

Characterization and sources of dissolved and particulate phosphorus in 10 freshwater lakes with different trophic statuses in China by solution 31P nuclear magnetic resonance spectroscopy

Sustainable Management of Eutrophic Lakes and Reservoirs

Chlorophyll-A Prediction of Lakes with Different Water Quality Patterns in China Based on Hybrid Neural Networks

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Product

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Characterization and sources of dissolved and particulate phosphorus in 10 freshwater lakes with different trophic statuses in China by solution ³¹P nuclear magnetic resonance spectroscopy

Characterization and sources of dissolved and particulate phosphorus in 10 freshwater lakes with different trophic statuses in China by solution ³¹P nuclear magnetic resonance spectroscopy