The importance of pH and sand substrate in the revegetation of saline non-waterlogged peat fields.

摘要: A partially peat-extracted coastal bog contaminated by seawater was barren and required revegetation as a wetland. Peat fields were rectangular in shape, cambered cross-section profile, separated drainage ditches. Common to all peat symmetrical patterns micro-topography with slopes between differences elevation. Saline non-waterlogged of ∼5% occurred pair on each side the crest at one end field. Three rows laid across this slope (Top, Middle, Bottom rows) transplanted naturally-growing plant species their sand substrate, three experiments, grown for year. In Spartina pectinata experiment, bare root stem sections also planted. Another experiment conducted determine changes characteristics volume when incubated saline fields. We found salinity increased moisture downslope, pH decreased increase salinity. S. pectinata grew best planted its substrate compared section, rows. Juncus balticus had excellent growth Unexpectedly, Festuca rubra that inconspicuous beneath J. balticus canopy natural donor site densely within sods. Agrostis stolonifera well but seemed show intolerance surrounding acidic curling up stolons. The much higher than peat. These studies suggest recognition niches manipulation are important disturbed Sphagnum peatlands abundantly northern hemisphere. Results relevant reclamation other lands.