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Crop multiple cropping index remote sensing extraction method

A technology of multiple cropping index and extraction method, which is applied in the fields of agriculture and remote sensing, can solve problems such as fragmented plots or small areas that are difficult to popularize and apply, and achieve the effect of accurate identification of temporal and spatial distribution and high precision

Active Publication Date: 2022-07-22
TIANJIN UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

However, due to the limitation of spatial resolution, it is difficult to popularize and apply to fragmented or small areas.

Method used

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  • Crop multiple cropping index remote sensing extraction method
  • Crop multiple cropping index remote sensing extraction method
  • Crop multiple cropping index remote sensing extraction method

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Embodiment Construction

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] In order to make the above objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0033] Refer to the attached figure 1 , a remote sensing extraction method of crop multiple cropping index, including:

[0034] Obtaining high temporal resolution remote sensing data, ...

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Abstract

The invention relates to a crop multiple cropping index remote sensing extraction method. The method comprises the steps that high-time-resolution remote sensing data is collected, a crop planting area is obtained, an NDVI-t two-dimensional rectangular coordinate system is constructed, and a crop phenological curve of an NDVI of a time sequence is obtained; and judging the crop planting stubble number based on the NDVI crop phenological curve of the time sequence and the high time resolution remote sensing data, and obtaining the multiple cropping index of the planting area based on the crop planting stubble number. Compared with a traditional method, the method is more scientific and higher in precision, the NDVI value of the time node of the key phenological period is obtained by combining different crop phenological information and utilizing remote sensing data with medium and high resolution, the crop multiple cropping index is established, and the purpose of accurately recognizing the spatial and temporal distribution of the multiple cropping index is achieved.

Description

technical field [0001] The invention relates to the technical fields of agriculture and remote sensing, in particular to a remote sensing extraction method of crop multiple cropping index. Background technique [0002] The multiple cropping index refers to the average number of crops planted on the same arable land area within a certain period (usually 1 year), that is, the average number of crops planted on the arable land area during the year, and the value is equal to the total sown area of ​​crops on the arable land in the year and the arable land area. Compare. The multiple cropping index is equal to the ratio of the total sown area of ​​crops to the area of ​​arable land in the whole year. It is an index reflecting the degree of cultivated land utilization, expressed as a percentage. The calculation formula is: multiple cropping index = total area of ​​crops sown (or transplanted) in the whole year ÷ total area of ​​arable land × 100%. It reflects the level of multi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06V20/10G06F16/58G06F16/583G06F16/587
CPCG06F16/583G06F16/5866G06F16/587
Inventor 刘冰宣
Owner TIANJIN UNIV
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