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Analysis method of coral reef blenching remote sensing monitoring mechanism

A technology for remote sensing monitoring and mechanism analysis, applied in the field of satellite remote sensing monitoring, which can solve problems such as confusion and complex stripping of coral reef remote sensing information.

Active Publication Date: 2019-11-05
NATIONAL MARINE ENVIRONMENTAL MONITORING CENTRE
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Problems solved by technology

For example, a pixel in a remote sensing image is often mixed with information of different coral reef substrate types. Even in clear water, the currently widely used optical remote sensing technology can only detect objects at a depth of 20 meters underwater. The strong absorption and attenuation effect in the visible light band makes the problem of stripping remote sensing information of different substrates of coral reefs more complicated

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  • Analysis method of coral reef blenching remote sensing monitoring mechanism
  • Analysis method of coral reef blenching remote sensing monitoring mechanism
  • Analysis method of coral reef blenching remote sensing monitoring mechanism

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Embodiment Construction

[0074] The present invention will be described in detail below in combination with specific embodiments.

[0075] 1. Establishment and analysis of standard spectral library of typical coral reef substrate types

[0076] 1. Spectral data collection

[0077] For different substrate types of coral reefs (coral, seaweed, seagrass, sand, gravel), select substrate types of different families, genera and species in different seasons and different coverages, and conduct field photometry in clear weather and basically calm water. Using the Profiler II underwater hyperspectral profiler to measure the down-going irradiance (E d A ) and the reflected radiance of the substrate (L r S ), and then calculate the downward irradiance E of the substrate surface by water depth (D) and water body attenuation coefficient (K) d S , and according to the substrate spectral reflectance R S The definition of R S for:

[0078]

[0079] Among them, T is the transmittance of the water-air inter...

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Abstract

The invention discloses an analysis method of a coral reef blenching remote sensing monitoring mechanism. The method comprises the steps of establishing a standard spectrum library of a coral reef typical substrate type based on measured spectral data, analyzing the applicability of a coral reef blenching remote sensing monitoring technology based on radiation transfer simulation, and analyzing the influence of environmental factors on coral reef blenching remote sensing signals. The method has the advantage that the coral reef blenching condition can be accurately and efficiently monitored remotely.

Description

technical field [0001] The invention belongs to the technical field of satellite remote sensing monitoring and relates to a mechanism analysis method for coral reef bleaching remote sensing monitoring. Background technique [0002] Coral reefs are one of the ecosystems with the highest productivity and the richest biological species on earth, and are ecological key areas with special value for maintaining the productivity of marine resources, and are also important indicators of marine environmental health (Zhao Meixia et al., 2006; Zhao Huanting et al., 2009; Lian Jiansheng et al., 2010). However, in the past few decades, due to the impact of global climate change and human activities, coral reefs around the world are undergoing profound changes (Wilkinson, 2008; Huang et al., 2013; Suchana et al., 2015). Studies have shown that 75% of coral reefs in the world have been threatened to varying degrees, among which coral reefs in Southeast Asia are most seriously threatened (...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/31G01N21/64G01N15/10G01N21/55G06F17/50G06F17/10
CPCG01N21/31G01N21/6486G01N15/10G01N21/55G06F17/10G01N2015/1006
Inventor 徐京萍赵建华王飞张建丽
Owner NATIONAL MARINE ENVIRONMENTAL MONITORING CENTRE
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