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Global land vegetation biomass change monitoring method

A vegetation biomass and change monitoring technology, which is applied in the field of global terrestrial vegetation biomass change monitoring, achieves the effects of simple operation, high precision on the surface, and improved change monitoring accuracy

Inactive Publication Date: 2014-08-06
INST OF AGRI RESOURCES & REGIONAL PLANNING CHINESE ACADEMY OF AGRI SCI +7
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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for monitoring global biomass spatio-temporal changes from remote sensing data MODIS GPP / NPP products, to overcome the actual difficulties in the existing monitoring of large-scale biomass spatio-temporal changes, and to intuitively show people in different regions of the world. To provide high-precision vegetation data for climate change research, so that humans can better adapt to climate change and respond to food security

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  • Global land vegetation biomass change monitoring method
  • Global land vegetation biomass change monitoring method
  • Global land vegetation biomass change monitoring method

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[0023] Step 1: Process and spatially interpolate the raw data, then use Equation 1 to calculate the spatial average for the GPP / NPP product of MODIS in the morning (10:30) on the Terra satellite

[0024] Step 2: Equation 2 calculates the global or regional average biomass status of vegetation biomass

[0025] The third step: use the average global or regional vegetation biomass calculated in the second step and Equation 3 to further calculate and analyze the global or regional vegetation biomass change trend, and analyze the temporal and spatial changes of global or regional biomass changes.

[0026] figure 1 From 2003 to 2010, (a) the average distribution map of global terrestrial vegetation, (b) the map of the change rate of global terrestrial vegetation biomass, from figure 1 a It can be seen that the area with the highest biomass in the world is distributed in the northern part of South America; from figure 1 b It can be seen that the most obvious increase in biology ...

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Abstract

The invention relates to a global land vegetation biomass change monitoring method which can be applied to remote sensing application departments of climatic change research, environment monitoring, land management, agricultural condition monitoring, disaster monitoring and the like. The method includes the three steps that first, certain processing and spatial interpolation processing are performed on original data, and then the spatial average of GPP / NPP products of an MODIS on a Terra satellite is calculated through the formula 1; second, the global or regional vegetation average biomass condition is calculated; third, the global or regional vegetation biomass change trend is further calculated through the global or regional vegetation average biomass calculated in the second step, and spatial and temporal change analysis is performed on the global or regional vegetation biomass change. Global analysis shows that the global biomass has a decreasing trend as a whole.

Description

technical field [0001] The invention relates to a method for monitoring global biomass changes using MODIS Gross / Net Primary Production (GPP / NPP) products on earth observation satellites, which is beneficial for human beings to understand the biomass changes in different regions of the global land, so as to take corresponding measures , this method breaks through the limitations of the traditional method of using stations for local observations, and intuitively displays the changes in biomass in different regions of the global land. It can be used in meteorology, agriculture, environmental monitoring and other departments. Background technique [0002] The productivity of terrestrial vegetation is the most primitive material for human's main food, fiber and fuel. Quantitative calculation of global vegetation biomass changes is of great significance for predicting climate change, mitigating and adapting to climate change, and studying global carbon cycle and climate change. ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
Inventor 不公告发明人
Owner INST OF AGRI RESOURCES & REGIONAL PLANNING CHINESE ACADEMY OF AGRI SCI
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