Monitoring of foredunes on Padre Island, Texas

摘要: Abstract : This study was conducted to continue monitoring foredunes formed from grass plantings made during 1969 1973 on north Padre Island beaches. The report summarizes data obtained elevational profiles and vegetative transects at four experimental foredune sections one natural section 1975 1976. beach foredunes, a 655-foot cross section, gained 5.7 cubic yards per linear foot of August However, sand accumulation not uniform; the end area no sand. Plantings, 50 feet wide seaward existing proved be an effective dune-widening technique. has provided 125-foot dune base versus 80-foot initial 100-foot-wide plantings. Sand-trapping rates averaged 6.3 year 4.0 for unplanted, area. last planted were almost identical. Apparently, is sufficiently vegetated accumulate as rapidly areas, but it taken 15 years reach this trapping efficiency without recognizable line. Rate lateral spread varied 5.25 7.24 ft/yr.