A framework for quantifying the extent of impact to plants from linear construction

Area of Science:

• Ecology
• Environmental Science
• Restoration Ecology

Background:

• Linear projects like pipelines cause significant environmental disturbance.
• Assessing the ecological impact and recovery of plant communities is crucial for environmental management.
• Existing methods may be confounded by natural ecological succession or invasive species.

Purpose of the Study:

• To develop and validate a novel framework for evaluating the ecological impact of linear construction projects.
• To accurately measure the extent of disturbance and recovery in plant communities, excluding pioneer and invasive species.
• To provide a tool for post-construction eco-environment impact assessment.

Main Methods:

• Utilized TWINSPAN classification to analyze plant community structure changes.
• Employed the variation of the integrated importance value (IIV) of plant species groups.
• Defined indicator species groups and inflection points to determine the extent of pipeline effects.

Main Results:

• Pipeline construction altered dominant species compared to original plant communities.
• Plant community composition and structure showed gradual changes as disturbance decreased.
• The outer limit of impact was identified as the area where the community stabilized and resembled the original state.

Conclusions:

• The developed framework accurately assesses linear construction impacts on plant communities.
• It effectively distinguishes project-induced changes from natural succession and invasive species.
• The framework is valuable for post-eco-environment impact assessment, estimating disturbance intensity and recovery status.