An urbanization regional ecological safety pattern assessment method

Abstract

The invention discloses an urbanization regional ecological safety pattern assessment method, and belongs to the technical field of urban ecological environment. The evaluation method comprises the following steps: establishing an urbanization region evaluation basic spatial database, performing initial assignment and spatial hooking on an ecological system service, and performing multistage correction on the ecological system service; performing data normalization processing and weighted calculation to obtain an ecological safety comprehensive index; and based on this, performing ecological safety level evaluation including ecological safety level judgment, ecological safety pattern analysis, ecological safety scene comparison and ecological safety optimization decision. Based on a unified urbanization regional land utilization classification standard of urban and rural land, the urbanization regional ecological safety pattern evaluation method coupling territorial space elements and ecological system service potential is established from a territorial space 'element-quality-pattern-process-service' cascade relationship, and technical supports such as simulation prediction, evaluation analysis and auxiliary decision making can be provided for construction and optimization of an urbanized regional ecological security pattern.

Description

technical field [0001] The invention belongs to the technical field of urban ecological environment, and in particular relates to an evaluation method for an urbanized regional ecological security pattern based on the cascading relationship of "element-quality-pattern-process-service" in land space. Background technique [0002] The rapid urbanization process in eastern my country in the past 30 years has led to habitat fragmentation and islanding, ecosystem structure imbalance, and severe decline in patch connectivity, which greatly restricts important ecosystem processes such as species migration, genetic information transmission, and material and energy cycles. At the same time, urban ecological and environmental problems such as heat island effect, urban waterlogging, soil and air pollution, and increased carbon emissions are caused, which seriously threaten the safety, health and well-being of urban residents. Constructing a scientific, reasonable, and efficient ecologic...

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Problems solved by technology

[0006] (1) Ecological space in the general sense (such as woodland, grassland, wetland, etc.) is often taken as the basic unit, emphasizing the relationship between ecological spatial pattern and process function, and lacking consideration of the ecological environment impact of non-ecological space

[0007] (2) Methods based on ecological processes, multi-objective functions, and ecological red lines are relatively mature, but lack the coupling and overall planning of ecosystem services, landscape ecological patterns, and urban and regional ecological linkage mechanisms

[0008] (3) Most of the results do not fall on the level of land use elements, and are poorly connected with the practical needs of land space planning. The layout scheme is often difficult to go deep into, and cannot be used to directly guide the layout and pattern optimization of various land use planning, and it is difficult to meet the decision-making needs of urban managers.

[0009] (4) The operability and implementability of ecological security pattern evaluation, construction, simulation and optimization are not strong, and there is a lack of ecological security pattern evaluation and simulation platforms based on ecosystem service supply and demand and ecological network models

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