Method for comprehensive assessment of geological sequestration CO2 leakage tolerance of crops

Abstract

The invention discloses a method for comprehensive assessment of geological sequestration CO2 leakage tolerance of crops. The method includes steps: calculating single-index tolerance coefficients, subjecting each index to correlation analysis and calculating a correlation coefficient matrix according to a correlation coefficient calculation method, performing principal component analysis on the basis of the correlation coefficient matrix, converting multiple original correlative indexes into few new independent comprehensive indexes, and selecting j principal components as the comprehensive indexes on the basis of principal component analysis, wherein sigma Pj>0.85; according to a fuzzy comprehensive evaluation method, calculating CO2 comprehensive tolerance indexes (Dk) of each crop by formulas as shown in the specification. Eight typical C3 and C4 crops in the loess plateau of northern Shaanxi are used as objects for creating the method for assessment of CO2 tolerance of the crops,crops tolerant to high-concentration CO2 is screened out, and references are provided for agricultural production decisions in CCS projection areas in the loess plateau of northern Shaanxi.

Description

technical field [0001] The present invention relates to a kind of crop to CO 2 Tolerance evaluation method, specifically a crop for geological sequestration of CO 2 A comprehensive evaluation method for leakage tolerance. Background technique [0002] Due to the late start of CCS project construction, the storage capacity is relatively small, and no obvious CO 2 leakage phenomenon, the current CO 2 Most studies on the impact of leakage on plants or crops focus on field or indoor simulation studies for CCS projects and other CO 2 On-the-spot investigation and study of the leak point. Beaubien, Krüger et al. through the natural CO 2 The study of vegetation coverage near the leak point found that plants within 6m from the leak center were significantly affected, and the vegetation coverage gradually recovered from the center to the outside; Pfanz H et al. found that CO 2 The increase of the concentration will cause the weakening of the photosynthesis of Timothy grass; Lak...

AI Technical Summary

Problems solved by technology

Although there have been some studies on CO 2 Case studies of spillage impacts on plants / crops, but systematic understanding of crop impacts on CO 2 Response and quantitative assessment of crop response to CO 2 Tolerance is still relatively rare

Currently, plants are sensitive to CO 2 There are few studies on tolerance

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