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Table 2 Carbon stored in headwater riparian reaches of sampled riparian zones and extrapolated to the entire Coastal Plain network

From: Carbon storage of headwater riparian zones in an agricultural landscape

Location (n = no. of reaches) Watershed size (km2) Stream network length (km) MgC/ha (30-m-wide zone) MgC/ha (60-m-wide zone) MgC/km stream length (30-m-wide zone) MgC/km stream length (60-m-wide zone) Total MgC stored in (30-m-wide zone) Total MgC stored in (60-m-wide zone)
Cow Swamp (40) 44.5 47.5 94.2 92.3 283 554 13,427 26,299
Crisp Creek (37) 45.9 41.2 84.0 87.0 252 522 10,380 21,514
Lumber (66) 73.7 74.8 104.4 100.5 313 603 23,415 45,070
Current condition of Coastal Plain riparian zones 56,772 57,227 96.3 94.7 289 568 16,529,285 32,512,359
Potential condition of Coastal Plain riparian zones 56,772 57,227 241.7 241.7 0.725 1.450 41,495,029 82,990,058
Difference        24,965,744 50,477,700
  1. Carbon is estimated to be 0.5 times organic matter [25]. Data for Coastal Plain riparian zones based on the weighted average of the three sampled watersheds. Potential carbon storage based on carbon estimated in Mature Forest. Current and potential carbon values of Coastal Plain riparian zones based on extrapolation from sampled networks. Riparian zone widths: 30-m-wide zone includes the 0-15 m bands on both sides of stream; the 60-m-wide zone includes the 0-30 m bands on both sides of stream. "Difference" represents the amount of additional carbon that could potentially be stored in Coastal Plain headwater networks. Total carbon pool would be about 10-15% more than indicated values if large roots (not sampled) were also included [23].