Drain-blocking techniques on blanket peat: A framework for best practice.

Area of Science:

• Environmental Science
• Peatland Ecology
• Restoration Ecology

Background:

• UK blanket peatlands have undergone extensive drainage.
• Artificial drain-blocking is increasing globally to restore peatland environments.
• Previous drain-blocking efforts lacked knowledge transfer and effectiveness evaluation.

Purpose of the Study:

• To compile drain-blocking techniques used in UK peatlands.
• To evaluate the effectiveness and cost-effectiveness of different methods.
• To develop a best practice guide for peatland drain-blocking.

Main Methods:

• Surveyed thirty-two drain-blocked peatland sites.
• Interviewed key stakeholders involved in drain-blocking.
• Assessed the success of drain-blocking methods based on site conditions.

Main Results:

• Drain-blocking using peat turf was the preferred and most cost-effective method.
• Peat turves were successful across various conditions, with exceptions on steep slopes, erosion areas, extreme wet/dry sites, or exposed mineral substrates.
• A comprehensive best practice guide was developed.

Conclusions:

• Peat turf is a recommended method for peatland drain-blocking due to its cost-effectiveness.
• Site-specific factors must be considered for successful drain-blocking.
• The developed guide provides crucial information for practitioners to optimize peatland restoration efforts.