Ecological space priority identification method based on multiple ecosystem service capability indexes

Abstract

The invention discloses an ecological space priority identification method based on multiple ecosystem service capability indexes, and belongs to the technical field of ecological network planning. The method comprises the following steps: firstly, respectively selecting corresponding evaluation indexes and evaluation methods according to the key ecosystem service of a research area and the corresponding relationship between the key ecosystem service and a supply space; then carrying out simulation calculation on each ecological space MESC index by constructing a multi-ecosystem service capability index and a coupling measurement model thereof; and quantifying an evaluation result of multi-ecosystem service supply of a research area with strong locality into a dimensionless scalable index,and then performing clustering analysis on the basis of an MESC index measurement result to divide an ecological space of the research area into a plurality of priorities. The method is scientific instep, universal and reproducible, and is suitable for quantitative measurement and space priority division of the ecological space comprehensive service supply capacity under a specific time frame ofany region.

Description

technical field [0001] The invention relates to an ecological space priority identification method based on multiple ecosystem service capability indexes, and belongs to the technical field of ecological network planning. Background technique [0002] In recent decades, the conversion of ecological space to artificial space as a result of the expansion of urban space has become a major cause of habitat destruction on a global scale. Ecological space provides important ecosystem services for cities, and is of great benefit in regulating local climate, maintaining biodiversity, conserving water sources, reducing flood disasters, providing recreational opportunities, and bringing well-being to citizens' health, etc. However, the fragmentation and reduction of ecological space greatly affects the supply level of ecosystem services, making cities face increasing ecological risks such as floods, smog, biodiversity reduction, and heat island effect. With the intensification of urb...

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Problems solved by technology

[0003] Although people are increasingly aware of the importance of ecological space in the provision of ecosystem services, and the practice and research of integrating ecosystem services into ecological space network planning has increased significantly in recent years, most studies have focused on spatial pattern Constructing an ecological network from the perspective of structure, or focusing only on shaping the ideal shape of ecological space and increasing the number of spaces in the region, is not a comprehensive adoption of the ecosystem service approach.

In addition, some researches on spatial priority identification based on quantitative measurement of ecosystem service functions are based on the direct extraction of high-value areas of a single service, or the simple superposition of multiple service values ​​as indicators for selecting priority spaces. The above methods rarely consider the joint effects of multiple ecosystem service interactions in space

There are also some studies that have constructed ecological space priority evaluation criteria based on single ecosystem service indicators, but the weight or priority of indicators in the standard is determined according to the socio-economic factors of the research area or the preferences of local stakeholders, making these method is highly local

Arguably, one of the shortcomings of existing research on spatial prioritization is the lack of general, unambiguous, and reproducible methodological indicators

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