Grassland ecosystem service value evaluation method

Abstract

The invention discloses a grassland ecosystem service value evaluation method. The method comprises the following steps: clarifying differences among high-coverage grassland ecosystems, medium-coverage grassland ecosystems and low-coverage grassland ecosystems; establishing a grassland ecological service classification system according to the grassland type and the service function type of the grassland type, and drawing an energy flow graph; calculating a direct value, an indirect value and an existing value of the grassland ecosystem by using an energy value analysis method; calculating grassland classification management indexes; and performing partition management based on the grassland classification management index. The grassland ecosystem service value evaluation framework and methodology are constructed based on energy value analysis, the method has the advantages of being high in evaluation accuracy and rationality, and the grassland ecosystem service value obtained through calculation can provide a certain scientific basis for grassland protection and management and establishment and perfection of an ecological compensation mechanism.

Description

technical field [0001] The invention relates to the technical field of ecosystem service value assessment, in particular to a grassland ecosystem service value assessment method based on emergy analysis. Background technique [0002] Ecosystem services are "various benefits that humans obtain from ecosystems" or "direct or indirect contributions of ecosystems to human well-being and efficiency". Ecosystem services have an important impact on human development and utilization of natural resources. It is of great significance to summarize and classify ecosystem service values, understand the role of ecosystem value in human social and economic development, rationally utilize natural resources and protect ecosystems. Ecosystem service value assessment is a quantitative assessment of ecosystem services based on basic data, ecological principles, economics, and sociological methods. It has the advantages of being additive and can directly reflect the value of ecosystem services. ...

AI Technical Summary

Problems solved by technology

[0004] The value of grassland ecosystem services is increasingly recognized by humans, but due to the complexity of grassland ecosystem structure, function, ecological process, etc. and the limitations of existing value evaluation methods, the promotion of grassland ecosystem protection has brought must hinder

At present, there are still many challenges in accounting for the value of grassland ecosystem services, such as the uncertainty of the classification and formation mechanism of grassland ecosystem services, and the repetition of accounting and summation of grassland ecosystem service values.

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