Method for surveying protective effect of paddy field protection forest by remote sensing technology

A remote sensing technology and shelterbelt technology, applied in the agricultural field, can solve the problems of lack of large-scale research on spatial scales, staying at the point scale, lack of systematic independent research, etc.

Inactive Publication Date: 2018-03-23
JILIN CITY ACADEMY OF FORESTRY
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Problems solved by technology

[0003] To sum up, research on farmland shelterbelts has matured in both breadth and depth, while paddy field shelterbelts are usually studied as part of farmland shelterbelts, lacking systema

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Embodiment Construction

[0034] In order to make the purpose, technical solutions and advantages of the present invention clearer, the following will further describe the embodiments of the present invention in detail.

[0035] The remote sensing images used in this technology are Landsat 8 OLI satellite remote sensing images of the United States. This series of satellite remote sensing data is managed by the US Geological Survey and provides L1 level data to global users free of charge. Therefore, the main collection method is through the US Geological Survey website. (http: / / www.usgs.gov / ) data window to download.

[0036] (1) The process of image acquisition:

[0037] The remote sensing image data in this technology is mainly used in the two parts of paddy field spatial distribution acquisition and rice NDVI value analysis. The two parts have different requirements for remote sensing images, but the collection process can be summarized into the following steps:

[0038] 1. Determine the scope of t...

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Abstract

The invention discloses a method for surveying the protective effect of a paddy field protection forest by a remote sensing technology. The method comprises the following steps: (1) remotely sensed images of a surveyed area are acquired; (2) paddy field space information of the protection forest is extracted from the remotely sensed images; (3) normalized difference vegetation indexes of a paddy field are calculated to represent paddy rice growth, and a maximum composition method is utilized to calculate a maximum normalized difference vegetation index of the paddy field; (4) sampling points are set for the paddy field space information of the protection forest; (5) according to the set sampling points, normalized difference vegetation index extraction is carried out, and a buffer analysismethod is adopted to calculate the protective effect of the paddy field protection forest. By extracting the paddy field space information of a protection forest region and the normalized differencevegetation indexes of the paddy field, the method for surveying the protective effect of the paddy field protection forest by the remote sensing technology, provided by the invention, discusses the influence of configuration modes of different forest belt distances, lengths, angles and the like on the growth of paddy rice, and the method can provide a scientific foundation for the future construction of paddy field protection forests.

Description

technical field [0001] The invention relates to the field of agricultural technology, in particular to a method for measuring the protection effect of paddy field shelterbelts by remote sensing technology. Background technique [0002] Paddy field shelterbelt is an important part of farmland shelterbelt, and it is an ecological guarantee for rice production. Since human management activities (such as irrigation, etc.) have a greater impact on paddy fields than dry fields, it is important to prevent wind damage, adjust small regional climate, and increase rice production. The relevant research on shelterbelts can be traced back to the 1950s, and the focus of research tends to be on the windbreak efficiency of shelterbelts. There are relatively few related studies on paddy field shelterbelts. developed in one aspect. Since the beginning of the 20th century, with the development of remote sensing technology, many scholars have begun to use remote sensing technology to carry o...

Claims

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Application Information

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IPC IPC(8): G01N21/84G01C11/00
CPCG01C11/00G01N21/84G01N2021/8466
Inventor 包广道张忠辉张大伟刘婷何怀江王娟林士杰王梓默史宝库付世萃胡长群赵珊珊罗也刘新荣赵吉胜杨晶杨文香宋彦彦
Owner JILIN CITY ACADEMY OF FORESTRY
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