Method for prospecting ores in high vegetation-covered area on basis of plant chlorophyll value feature change

Abstract

The invention provides a method for prospecting ores in a high vegetation-covered area on the basis of plant chlorophyll value feature change. An ore prospecting target area is determined through plant chlorophyll value feature change, and the fluid migration direction of a hydrothermal metallic deposit can be determined. The method for prospecting ores in the high vegetation-covered area on the basis of plant chlorophyll value feature change successively comprises the following steps: A, acquiring at least one plant sample at different positions in the high vegetation-covered area; B, measuring content feature values of plant sample pigments at different positions of the high vegetation-covered area; and C, carrying out content feature value change charting on the plant pigments and determining the positions of the ores. Plant substance components are affected by underground enriched elements, so that plant chlorophyll values a and b and the total content are changed; feature change of the plant chlorophyll content is caused, and the ore prospecting target area is determined; and the method is an effective method for prospecting a blind ore deposit in the high vegetation-covered area.

Description

technical field [0001] The invention relates to an ore prospecting method, which is a remote sensing ore prospecting method in high vegetation coverage areas based on characteristic changes of plant chlorophyll values. Background technique [0002] The use of vegetation anomalies to guide mineral prospecting is currently mainly vegetation geochemical anomaly prospecting and vegetation spectral remote sensing mineral prospecting. Because the content of ore-forming elements is too high compared with the regional background value, or the content of ore-forming elements inhibits the growth of other elements due to the enrichment of ore deposits and the content is too low, the life movement of plants will produce a series of abnormal effects. Due to the difference in ore-forming geological environment and conditions, the formed minerals and their element combinations and biogeochemical effects are also different, or the spectral anomalies related to the differences in plant pigme...

AI Technical Summary

Problems solved by technology

[0003] The location of ore deposits in vegetation-covered areas has always been difficult. The ground microstructure traces are blocked by surface vegetation. The commonly used geochemical prospecting is limited by the luxuriant vegetation on the surface, which affects plant growth due to multiple factors, causing geochemical bias, etc. It is difficult to directly carry out sample collection. Deposit location

[0004] Spectral remote sensing prospecting can overcome sampling difficulties and determine the location of ore deposits by monitoring the spectral characteristics of vegetation in vegetation-covered areas through remote sensing. However, it coincides with the spectral absorption characteristics of the hydroxyl-altered minerals for ore prospecting, and multispectral remote sensing cannot solve this dilemma at all.

Spectral prospecting is also largely affected by factors such as changes in vegetation species and their organs. The changes in various factors are reflected in the spectral characteristics and there are also absorption peaks of different wavelengths, which limits the application of vegetation spectral prospecting.

[0005] Therefore, there is still no better method for ore prospecting in high vegetation coverage areas.