Bare soil change identification method combining multiple remote sensing indexes

An identification method and bare soil technology, applied in the field of bare soil change identification, can solve the problems of large workload, low classification result accuracy, and difficulty in selecting training sample areas, and achieve the effect of improving accuracy and strong temporal and spatial continuity.
CN112116242AActive Publication Date: 2020-12-22福州福大经纬信息科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
福州福大经纬信息科技有限公司
Publication Date
2020-12-22

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Abstract

The invention relates to a bare soil change identification method combining multiple remote sensing indexes. The method comprises the following steps: S1, building a vegetation near-infrared reflection index time series data set; S2, establishing a bare soil index time series data set; S3, establishing a characteristic index time series data set; S4, evaluating and selecting characteristic indexes; S5, calculating the change trend of the characteristic indexes; S6, establishing a bare soil change identification scheme; and S7, identifying the bare soil change of the research area to obtain a bare soil change spatial distribution map of the research area: judging whether the bare soil is changed pixel by pixel according to the bare soil change identification scheme established in step S6, and finally generating a bare soil change identification result map of the research area. The method is suitable for large-range bare soil change monitoring, the space-time continuity is high, bare soil does not need to be extracted in advance, and a long-time sequence bare soil change spatial distribution map can be rapidly obtained.
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Description

technical field

[0001] The invention relates to the technical field of time-series remote sensing change monitoring, in particular to a bare soil change identification method combined with multiple remote sensing indexes. Background technique

[0002] Soil erosion is a severe ecological environment problem facing the world today, and various disasters induced by it have also brought threats and damage to people's production and life, and bare soil is the main surface landscape in soil erosion areas. In this regard, it is especially important to quickly and accurately locate the bare soil area and analyze the temporal and spatial changes of the bare soil on the surface for the control of soil erosion. In recent years, remote sensing technology has become an indispensable high-tech for soil erosion control and evaluation. In this regard, many scholars use remote sensing technology to study the change of bare soil, and the main methods include three categories: (1) identify th...

Claims

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