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Reservoir water body total nitrogen content estimation method based on optimized derivative calculation method

A technology of nitrogen content and water body, applied in the direction of color/spectral characteristic measurement, etc., can solve the problems of large fertilization loss, water quality pollution in water source protection areas, and insufficient attention to the negative effects of water quality in the artificial eucalyptus forest ecosystem, achieving high precision and protection The effect of water quality and ecological security

Inactive Publication Date: 2017-05-31
GUANGZHOU INST OF GEOGRAPHY GUANGDONG ACAD OF SCI
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Problems solved by technology

The loss of total nitrogen fertilization in fast-growing eucalyptus forests is much greater than that in other broad-leaved forests, resulting in serious water pollution in lakes and reservoirs in eucalyptus forests.
[0003] Previous studies have paid more attention to air pollution purification, water and fertilizer utilization and nutrient cycle, water balance, biodiversity, etc. in eucalyptus plantations, but not enough attention has been paid to the negative effects of water quality in planted eucalyptus forest ecosystems

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  • Reservoir water body total nitrogen content estimation method based on optimized derivative calculation method
  • Reservoir water body total nitrogen content estimation method based on optimized derivative calculation method
  • Reservoir water body total nitrogen content estimation method based on optimized derivative calculation method

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[0026] The present invention will be further described below in combination with specific embodiments.

[0027] Such as Figure 1-2 As shown, the Hedi Reservoir is located in the northern part of the Leizhou Peninsula, Hechun Town, 14 kilometers northwest of the city. The reservoir area spans the two counties of Luchuan and Bobai in the Guangxi Zhuang Autonomous Region, and is in the middle reaches of the Jiuzhou River. One hundred million cubic meters, it is a large-scale reservoir that is mainly used for irrigation and combined with flood control, power generation and shipping. The designed irrigation area is 2 million mu, and the effective irrigation area is 1.27 million mu. Hedi Reservoir is a multi-year regulating reservoir with a total storage capacity of 1.1875 billion cubic meters, of which 311.5 million cubic meters are for flood regulation, 536 million cubic meters for prosperity and 340 million cubic meters for dead storage. The canal system in the irrigation area...

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Abstract

The invention discloses a reservoir water body total nitrogen content estimation method based on an optimized derivative calculation method, wherein an estimation model is established according to the spectral reflectivity wavelength derivative and water body sample measured total nitrogen content, then total nitrogen content is estimated according to the estimation model, the estimation result is quickly obtained, and knowledge of the environmental problems of eucalyptuses in the reservoir area is deepened. The spectral reflectivity wavelength derivative is calculated by an optimized method which has higher precision than traditional derivative calculation method; and scientific support and decision basis are provided for protecting ecological safety and sustainable development of water quality.

Description

technical field [0001] The invention relates to the technical field of water quality ecological security, in particular to a method for estimating the total nitrogen content of reservoir water based on an optimized derivative calculation method. Background technique [0002] Eucalyptus is one of the three famous fast-growing tree species in the world. It is a subtropical evergreen plant native to Australia. Because eucalyptus is widely used in papermaking, wood-based panels, construction and other industries, the planting area of ​​eucalyptus in Guangdong is close to 3 million hectares 2 . The loss of total nitrogen fertilization in fast-growing eucalyptus forests is much larger than that in other broad-leaved forests, resulting in serious water pollution in lakes and reservoir drinking water source protection areas in eucalyptus forests. [0003] Previous studies paid more attention to air pollution purification, water and fertilizer utilization and nutrient cycle, water ...

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Application Information

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IPC IPC(8): G01N21/25G01N21/31
CPCG01N21/25G01N21/31
Inventor 王重洋陈水森姜浩李丹王丹妮
Owner GUANGZHOU INST OF GEOGRAPHY GUANGDONG ACAD OF SCI
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