Lake and reservoir stability partitioning method based on environmental elements

Abstract

The invention discloses a lake and reservoir stability partitioning method based on environmental elements, and belongs to the field of remote sensing and environment. The method comprises the following steps: acquiring regional remote sensing images containing a complete target lake and reservoir in multiple years, and processing to obtain a remote sensing image containing regional surface reflectance in each year and water surface range vector data of the target lake and reservoir in the region in each year; respectively obtaining a classification grid image of a multi-year shoreline complexity index of the target lake and reservoir and a classification grid image of a multi-year water surface average temperature difference of the target lake and reservoir through a natural discontinuity method; and superposing the two classified grid images, and obtaining a stability partitioning result of the target lake and reservoir through a natural discontinuity method. According to the method, the distribution condition of the multi-year shoreline complexity and the distribution condition of the water surface temperature difference of the target lake and reservoir are extracted through the satellite remote sensing image, and the change of the hydrothermal environment of the lake and reservoir is effectively reflected, so that the effect of monitoring the stability of the lake and reservoir in a partitioned manner is achieved.

Description

technical field [0001] The invention belongs to the field of remote sensing and the environment, in particular to a method for zoning the stability of lake reservoirs based on environmental elements. Background technique [0002] Water body zoning is an objective understanding of the goals of the ecosystem and a comprehensive investigation of the relationship between natural laws and human activities. Through zoning, the characteristics of different regions can be fully understood, so that the region can achieve environmental protection and sustainable development of resources. [0003] The change of environmental elements in different regions of the lake itself determines its overall performance. In arid cities, the stability of the water environment comes from sufficient water, and the obvious fluctuation of water will seriously damage the entire stable aquatic system. Lake reservoirs store surface runoff during the rainy season and recharge rivers when rainfall is insuff...

AI Technical Summary

Problems solved by technology

The defect of the existing method is that the lake reservoir is regarded as a whole, and only pays attention to the unified characteristics of each region shown by the lake reservoir, ignoring the differences in the changes of the various parts of the lake reservoir itself

In the case of no division of lakes and reservoirs, it is not conducive to the supervision of lakes and reservoirs. It may be difficult to detect local changes in the water environment in the early stage. Only when the entire lake and reservoir area is affected can it be discovered, which is not conducive to timely containment of lakes and reservoirs. deterioration of the environment; and when the lake environment is suddenly changed by certain factors, it may take a long time to find the cause, and miss the best treatment time; in addition, it is impossible to scientifically base the According to the characteristics of each area of ​​the reservoir, make corresponding use planning, such as the area suitable for freshwater aquaculture, the area suitable for wetland protection, the area suitable for nearby agricultural activities, etc., it is impossible to effectively grasp the optimal operation status of the lake reservoir

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