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Treatment method based on lake nutritive salt classification

A nutrient salt and lake technology, applied in the field of environmental science, can solve the problems of insufficient and over-protection of lakes, achieve the effects of protecting human health and ecosystem health, improving efficiency, and saving economic costs

Pending Publication Date: 2021-03-12
NANJING INST OF GEOGRAPHY & LIMNOLOGY
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  • Description
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  • Application Information

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Problems solved by technology

[0004] However, the current main reference document for lake nutrient management is the "Surface Water Environmental Quality Standards", and the nutrient reduction targets are unified in all regions, which can easily lead to insufficient or over-protection of some lakes

Method used

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  • Treatment method based on lake nutritive salt classification
  • Treatment method based on lake nutritive salt classification
  • Treatment method based on lake nutritive salt classification

Examples

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Embodiment 1

[0053] (1) if figure 1 As shown in , samples were taken in the eastern plain ecological area of ​​my country, and the data sets of water depth, water change cycle, total nitrogen concentration, total phosphorus concentration, chlorophyll a concentration and aquatic grass coverage of each lake in summer were obtained;

[0054] (2) if figure 2 Shown, adopt simple linear regression model to analyze the total phosphorus concentration, total nitrogen concentration and chlorophyll a concentration (shown in dotted line) the relationship formula A of chlorophyll a concentration and total nitrogen concentration, and the relation of chlorophyll a concentration and total phosphorus concentration Formula B, due to the coefficient of determination (R 2 ) are less than 0.5, then it is necessary to classify and manage nutrients;

[0055] (3) if figure 2 Shown, utilize the 95% quantile regression model to obtain respectively the relational formula I of chlorophyll a concentration and tot...

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Abstract

The invention discloses a treatment method based on lake nutritive salt classification, which is based on background factors, total nitrogen concentration, total phosphorus concentration and chlorophyll a concentration of different lakes in summer, uses a simple linear regression model to analyze classification necessity, and performs unified nutritive salt upper limit treatment on lakes which donot need to be classified; for on lakes which need to be classified, the method sequentially identifies the influence of each lake background factor on the relationship between the chlorophyll a concentration and the total nitrogen concentration and the influence of each lake background factor on the relationship between the chlorophyll a concentration and the total phosphorus concentration through a 95% quantile regression model and a generalized additive model, classifies based on the identified significant background factors, and formulates various lake type nutritive salt treatment schemesthrough a simple linear regression model. The method provided by the invention has sufficient ecological basis, the classification result is objective, the management efficiency can be improved, andthe economic cost is saved.

Description

technical field [0001] The invention belongs to the field of environmental science, and relates to measures for the prevention and control of lake algae blooms, in particular to a method based on lake background division that can be used to accurately implement classified management of lake nutrient salts. Background technique [0002] Lakes are important freshwater resource storages on the earth's surface that can be directly used by humans. They not only play an important role in regulating river runoff, flood control and disaster reduction, but also have a huge function of intercepting land-based pollution and purifying water quality. The sustainable use of water resources and the protection of human rights Survival environment is very important. However, human activities have caused a large amount of nutrients such as nitrogen and phosphorus to be discharged into lake water, making algae blooms one of the most common ecological and environmental problems, posing a seriou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/62G01N33/18G06Q50/26
CPCG01N33/18G06Q50/26G06F18/24
Inventor 邹伟朱广伟朱梦圆许海国超旋
Owner NANJING INST OF GEOGRAPHY & LIMNOLOGY
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