Method for responding to surface temperature of afforestation based on multi-source remote sensing and energy balance model

A surface temperature and energy balance technology, applied in special data processing applications, computer-aided design, design optimization/simulation, etc., can solve the problem of lack of temporal and spatial information on surface changes, unclear regional temperature changes, inability to achieve afforestation and its regional temperature Problems such as changing spatiotemporal scale expansion

Active Publication Date: 2021-09-03
NANJING FORESTRY UNIV
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Problems solved by technology

However, how the changes in land surface conditions during afforestation and its regional and local albedo radiative feedbacks, energy redistribution and other biophysical energy balance mechanisms and climate feedbacks have yet to be evaluated.
In summary, on the one hand, the limited availability of medium- and high-resolution afforestation data has hindered the accurate quantification of the impact of temperature change, and on the other hand, it is still unclear which biophysical factors are responsible for the regional temperature change
[0004] Conventional observation methods cannot realize the spatial and temporal scale expansion of afforestation and its response to regional temperature changes. First, there is a lack of accurate temporal and spatial information on surface changes. Second, the singleness of observation methods and methods for responding to temperature changes, such as using only remote sensing data combined with some spatial Statistical analysis a

Method used

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  • Method for responding to surface temperature of afforestation based on multi-source remote sensing and energy balance model
  • Method for responding to surface temperature of afforestation based on multi-source remote sensing and energy balance model
  • Method for responding to surface temperature of afforestation based on multi-source remote sensing and energy balance model

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Embodiment 1

[0042] like figure 1 The method shown in response to surface temperature changes based on multi-source remote sensing and energy balancing model, including the following steps: first collecting available remote sensing and climate data, and land coverage data, using spatial analysis to generate high resolution Unchangeable afforestation spatiotemporal distribution maps, including artificial forests, natural forests and open places (grassland and farmland), then the acquired data is measured to measure, unified resolution, and through mobile window space sampling methods, radiation, Soil thermal flux, satellite surface temperature and air temperature energy redistribution factor estimation, finally, based on the energy re-allocation factor, researcies, researchers, soil heat flux, calculate the effect of factor on surface temperature, The three summation is the effect of afforestation on surface temperature.

[0043] 1) Data acquisition

[0044] Taking Guangdong Province as an exam...

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Abstract

The invention discloses a method for responding to surface temperature of afforestation based on a multi-source remote sensing and energy balance model. The method comprises the following steps: 1) collecting available remote sensing data, climate data and land coverage data; 2) by utilizing a spatial analysis method, generating a space-time distribution diagram of the unchanged man-made forest, the natural forest and the open land with efficient resolution; 3) carrying out scale conversion and matching on the collected data, unifying the resolution, and carrying out space-time change simulation of afforestation and change analysis of related parameters based on a grid sampling scale moving window space sampling method; and 4) constructing an afforestation response surface temperature distinguishing model integrating a surface energy balance equation and an internal biophysical theory. The multi-source remote sensing data, the climate data and the energy balance model are integrated to evaluate the regional temperature response mechanism of afforestation, so that the model responding to temperature change is more comprehensive and reliable, and an important scientific evaluation basis is provided for implementation of management measures of reasonable afforestation.

Description

Technical field [0001] The present invention is in response to changes in forest Field temperature effect model, particularly to a method based on multiple RS and energy balance model in response planting surface temperature. Background technique [0002] How to accurately quantify the biophysical mechanisms of spatial and temporal distribution of afforestation in response to temperature changes help to understand the forest area of ​​climate change regulation. The traditional methods based on changes in land-use statistics and field observations is typically used to detect the temperature change in response to the forest. However, due to weather or field distribution sites are sparsely laid, can not be located temporal variation of temperature forested dynamic position accurately. It as a most convincing way, especially for a small area, but the lack of mechanism analysis. Climate models have been widely used to study the biophysical feedback mechanism for the forestation of cli...

Claims

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Application Information

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IPC IPC(8): G06F30/20G06F119/08
CPCG06F30/20G06F2119/08
Inventor 沈文娟
Owner NANJING FORESTRY UNIV
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