Stony desertification control effect multi-index monitoring and evaluating method based on multi-source remote sensing data

Abstract

The invention discloses a stony desertification treatment effect multi-index monitoring and evaluating method based on multi-source remote sensing data. The method comprises the following steps: (1) acquiring high-medium-low multi-source remote sensing data before and after stony desertification treatment in a monitoring area according to actual requirements; (2) calculating the vegetation coverage FVC and the leaf area index LAI of different time phases of the stony desertification control area according to the remote sensing data obtained in the step (1); (3) carrying out binarization processing according to the change conditions of the vegetation coverage FVC and the leaf area index LAI obtained in the step (2); (4) obtaining a comprehensive change condition FL of the vegetation coverage and the leaf area index; and (5) constructing a stony desertification treatment effect evaluation system. According to the invention, the defect of monitoring the physiological state of the vegetation in the treatment area in the current rocky desertification treatment monitoring is overcome, and the beneficial effect of monitoring the treatment situation more systematically and comprehensivelyis achieved.

Description

technical field [0001] The invention relates to a method for monitoring and evaluating the effect of rocky desertification control, in particular to a method for monitoring and evaluating the effect of rocky desertification control based on multi-source remote sensing data, belonging to the technical field of ecological environment monitoring. Background technique [0002] Rocky desertification refers to the destruction of surface vegetation due to human unreasonable social and economic activities under humid and semi-humid climate conditions and the natural physical basis of extremely developed karst, resulting in soil erosion, large-scale exposed bedrock or accumulation of gravel, The land surface presents a phenomenon of land degradation resembling a desertification landscape. For example, natural vegetation is constantly being destroyed, large areas of steep slopes are opened up, and other reasons will cause the surface to be exposed, coupled with heavy rain and strong e...

AI Technical Summary

Problems solved by technology

Although the current rocky desertification control has achieved certain results, there are still situations such as destruction while treatment, and treatment projects that have not been implemented in place.

And it is worth noting that there are currently many studies on rocky desertification prevention and control methods and related facilities (for example, the Chinese patent "A Rocky Desertification Prevention System and Its Prevention Method" with the application number 201910141558.4, the Chinese patent application number 201810448811.6 "A Method for Restoring Moderate Rocky Desertification Using Liana Plants"; and the Chinese Patent Application No. 201710358049.8 "A Method for Ecological Restoration of Rocky Desertification Mountains"); However, the research on the comprehensive evaluation system for the effectiveness of rocky desertification control It is very lacking, and there is an urgent need for an effective monitoring and evaluation method for rocky desertification control

Images