Spectral characteristic based remote sensing monitoring method of plastic film mulched farmland

A technology of mulching film covering and spectral characteristics, which is used in the measurement of color/spectral characteristics, measuring devices, material analysis by optical means, etc. Technical negative effects, etc.

Inactive Publication Date: 2016-07-13
INST OF AGRI RESOURCES & REGIONAL PLANNING CHINESE ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
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  • Application Information

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Problems solved by technology

However, the current spatial distribution pattern, distribution area and change characteristics of plastic film mulched farmland in my country are still unclear.
Therefore, it is impossible to provide a basis for the scientific planning and management of plastic film production, use, and residual film

Method used

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  • Spectral characteristic based remote sensing monitoring method of plastic film mulched farmland
  • Spectral characteristic based remote sensing monitoring method of plastic film mulched farmland
  • Spectral characteristic based remote sensing monitoring method of plastic film mulched farmland

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Embodiment Construction

[0023] Embodiments of the present invention are described below with reference to the drawings, in which like parts are denoted by like reference numerals.

[0024] For the monitoring of mulch-covered farmland, the applicant carried out related surface features on USGS (United States Geological Survey, United States Geological Survey), NASA ASTER (Advanced Spaceborne Thermal Emission Reflection Radiometer) spectral library data and ASD (AnalyticalSpectralDevices, ground object spectral instrument) spectrometer measured spectral data Types of spectral reflectance curve shape characteristics and reflectance value ranges are analyzed.

[0025] figure 1 The figure shows the spectral reflectance of five plastics, including: HDPE (high-density polyethylene), LDPE (low-density polyethylene), PETE (polyethylene terephthalate), and PVC (polyvinyl chloride). figure 2 ASTER vegetation spectral reflectance plots are shown. image 3 ASTER soil spectral reflectance curves are shown. Fi...

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Abstract

The invention discloses a spectral characteristic based remote sensing monitoring method of plastic film mulched farmland. The spectral characteristic based remote sensing monitoring method of the plastic film mulched farmland comprises a step S1 of carrying out preprocessing on a remote sensing image, which comprises S1, radiation correction, atmospheric correction and the carrying out of inlaying and cutting processing on an image to obtain a research-area image, on the remote sensing image; a step S2 of establishing a plastic film mulched farmland remote sensing monitoring classification system, so as to distinguish the plastic film mulched farmland and other ground objects; a step S3 of collecting irregular polygonal samples of different ground object types in the classification system through visually interpreting a Google Earth image with a time phase same with that of the research-area image, and then delineating regular polygonal samples of a predetermined-size picture element anew in irregular polygons through visual interpretation; a step S4 of carrying out analysis on the separability of the different ground objects in the research-area image, so as to select a separable wave band; a step S5 of classifying the research-area image by utilizing the regular polygonal samples and using a classifier. The invention provides a new method for monitoring the plastic film mulched farmland.

Description

technical field [0001] The invention relates to remote sensing monitoring technology, more specifically, to a method for remote sensing monitoring of farmland covered by plastic film based on spectral characteristics. Background technique [0002] Plastic film mulching cultivation can significantly improve the habitat conditions such as temperature, light, water, air, and fertilizer in farmland, increase soil moisture, promote crop growth and development, shorten the growth period, avoid later-stage diseases and insect pests and natural disasters such as dryness, heat, and wind, and greatly increase crop yields , and can be listed in advance to increase economic income. It is one of the key cultivation techniques in arid and semi-arid areas, areas with low temperature and water shortage, and areas with large temperature and precipitation changes and regional differences. [0003] However, after the crops are harvested, the remaining mulch film in the farmland will cause the ...

Claims

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Application Information

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IPC IPC(8): G01N21/25G01N21/17
CPCG01N21/17G01N21/25G01N2021/1793
Inventor 陈仲新哈斯图亚王利民李贺
Owner INST OF AGRI RESOURCES & REGIONAL PLANNING CHINESE ACADEMY OF AGRI SCI
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