Method for estimating ammonia nitrogen content of reservoir water based on hyperspectral data

A technology of ammonia nitrogen content and hyperspectral, applied in the field of water quality ecological security, can solve the problems of water pollution in water source protection areas, insufficient attention to the negative effects of water quality in artificial eucalyptus forest ecosystems, and large loss of ammonia nitrogen fertilization, so as to achieve the goal of protecting water quality and ecological security Effect

Inactive Publication Date: 2017-07-11
GUANGZHOU INST OF GEOGRAPHY GUANGDONG ACAD OF SCI
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Problems solved by technology

The loss of ammonia nitrogen fertilization in the fast-growing eucalyptus forest is much larger than that of other broad-leaved forests, resulting in serious water pollution in the lake drinking water source protection area in the eucalyptus forest area
[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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  • Method for estimating ammonia nitrogen content of reservoir water based on hyperspectral data
  • Method for estimating ammonia nitrogen content of reservoir water based on hyperspectral data
  • Method for estimating ammonia nitrogen content of reservoir water based on hyperspectral data

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Embodiment Construction

[0024] The present invention will be further described below in combination with specific embodiments.

[0025] Such as Figure 1-3 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 method for estimating the ammonia nitrogen content of reservoir water based on hyperspectral data. An estimation model is established according to the wavelength derivative of spectral reflectance and the measured ammonia nitrogen content of a water sample, and is used to estimate the ammonia nitrogen content in order to obtain a high-precision estimation result. The method facilitates the deepening of the understanding of the environmental problems of the eucalyptuses in a reservoir area, and provides scientific and technological support and decision-making basis for the protection of ecological security of water and the sustainable development of water.

Description

technical field [0001] The invention relates to the technical field of water quality ecological security, in particular to a method for estimating ammonia nitrogen content in reservoir water based on hyperspectral data. 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 ammonia nitrogen fertilization in the fast-growing eucalyptus forest is much larger than that in other broad-leaved forests, resulting in serious water pollution in the drinking water source protection area of ​​the lake and reservoir in the eucalyptus forest area. [0003] Previous studies paid more attention to air pollution purification, water and fertilizer utilization and nutrient cycle, water ba...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/25
CPCG01N21/25
Inventor 王重洋陈水森李丹姜浩刘尉杨骥刘佳
Owner GUANGZHOU INST OF GEOGRAPHY GUANGDONG ACAD OF SCI
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