Lake wetland landscape health condition evaluation method based on remote sensing interpretation technology

Abstract

The invention relates to a lake wetland landscape health condition evaluation method based on the remote sensing interpretation technology. The method comprises the steps: collecting the representative remote sensing image data of a lake wetland in different years, and extracting the wetland landscape information based on the watershed scale through the remote sensing interpretation technology; designing a wetland landscape layer-by-layer aggregation index system which comprises a target layer, a criterion layer and an index layer based on the above; carrying out the importance assignment of the evaluation indexes of the criterion layer and the index layer through the '9 / 9-9 / 1' scale of an improved AHP (Analytic Hierarchy Process) method, calculating the weights of the evaluation indexes,and carrying out the dimensionless processing of the original data of the evaluation indexes through an extremum method; finally calculating and obtaining the lake wetland landscape comprehensive health index of each year, carrying out the health level threshold dividing of the landscape comprehensive health indexes, and determining the lake wetland landscape health state of each year. The methodcan achieve the more systematic and complete revealing of the wetland landscape pattern features and dynamic changes of the wetland landscape pattern features.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and relates to a method for evaluating the health status of lake and wetland landscapes based on remote sensing interpretation technology. Background technique [0002] Under the joint effect of global climate change and human disturbance, the degradation trend of wetland ecosystem is becoming more and more severe. Landscape is an important part of the lake wetland ecosystem. Carrying out the evaluation of the health status of the lake wetland landscape and finding out the reasons leading to the degradation of the lake wetland landscape structure and function are indicative for revealing the health of the lake wetland ecosystem, its characteristics and succession. significance. However, wetlands are widely distributed and of various types, resulting in complex wetland evaluation content and various evaluation methods. There are different evaluation methods for different evaluati...

AI Technical Summary

Problems solved by technology

However, there are few current studies on the evaluation of wetland landscape health, and even less reports on the health evaluation of lake wetland landscape.

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