A method for inversion of copper element in soil of vegetation coverage area based on measured spectrum of leaves

Abstract

The invention relates to an inversion method for copper elements in soil in vegetation-covered areas on the basis of measured spectra of leaves. The inversion method includes steps of firstly, acquiring and preprocessing images; secondly, carrying out in-situ sampling; thirdly, processing samples; fourthly, measuring and preprocessing the spectra of the leaves; fifthly, measuring the contents of the copper elements in the soil samples; sixthly, computing vegetation indexes and spectral parameters; seventhly, analyzing correlations and selecting parameters; eighthly, building models; ninthly, carrying out large-area inversion on the content of the copper elements in the soil. The inversion method has the advantages that images of the content of the copper elements in the large-area soil inthe vegetation-covered areas can be obtained, accordingly, indication information and mineral exploration clues can be provided to mineral resource investigation, and scientific bases can be providedto land quality evaluation and soil comprehensive treatment; heavy metal pollution diffusion conditions of the soil and control effect evaluation can be obtained on the basis by means of multi-temporal analysis; the inversion method is wide in detectable range and high in speed, monitoring can be carried out in real time, and the like.

Description

technical field [0001] The invention relates to the technical field of inversion of copper element content in soil in vegetation-covered areas, in particular to a method for inversion of copper element in soil in vegetation-covered areas based on the measured spectrum of leaves. Background technique [0002] In geological prospecting, vegetation has always been an important factor restricting remote sensing prospecting, which has brought great difficulties to conventional geological prospecting and mineral resource exploration. About two-thirds of the world's land surface is covered by vegetation, and China's vegetation coverage rate is about 70%, and the forest coverage rate is about 25%. Some major metallogenic belts in my country, such as the Derbugan metallogenic belt, the Qinling metallogenic belt, and the Sanjiang metallogenic belt in Yunnan, have dense vegetation, steep terrain, thick weathered overburden, and serious leaching of elements in the surface soil. The expl...

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Problems solved by technology

[0004] The traditional vegetation geochemical prospecting mainly adopts the method of field survey sampling and laboratory analysis and testing, which requires a lot of manpower and material resources

At the same time, there are still a large number of areas where field investigation and sampling cannot be carried out due to factors such as terrain, topography, and vegetation coverage, and it is difficult to obtain regional mineral resource distribution clues.

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