Multi-indicator monitoring and evaluation method for rocky desertification control effectiveness based on multi-source remote sensing data

Abstract

The invention discloses a multi-index monitoring and evaluation method for the effectiveness of rocky desertification control based on multi-source remote sensing data. (2) Calculate the vegetation coverage FVC and leaf area index LAI in different phases of the rocky desertification control area according to the remote sensing data obtained in step (1); (3) The vegetation coverage FVC and leaf area index obtained according to step (2) The change of LAI is processed by binarization: (4) obtain the comprehensive change FL of vegetation coverage and leaf area index; (5) construct the evaluation system of rocky desertification control effectiveness. The invention makes up for the deficiency of monitoring the physiological state of the vegetation in the treatment area in the current rocky desertification control monitoring, and has the beneficial effect of being able to monitor the control situation more systematically and comprehensively.

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...

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Problems solved by technology

[0006] 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

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