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

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...

AI Technical Summary

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 systematic independent research. In terms of the impact of paddy field shelterbelts on rice growth Relevant studies mostly stay at the point scale, lacking large-scale research on the spatial scale