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Table 1 Carbon (C) and nitrogen (N) contents of stem wood of the main tree species of the watershed

From: The relevance of using in situ carbon and nitrogen data and satellite images to assess aboveground carbon and nitrogen stocks for supporting national REDD + programmes in Africa

Carbon (C) contents (% dm) Nitrogen (N) contents (% dm) DBH (cm) C/N ratio
Trees species n Min Max Mean (SE) Min Max Mean (SE) Min Max Min Max Mean (SE)
Terminalia macroptera 19 46.267 51.241 49.474 (0.266) 0.108 0.303 0.192 (0.013) 9.3 40.7 160.50 428.39 281.81 (18.33)
Terminalia avicennioides 03 47.971 49.759 48.70 (0.53) 0.155 0.181 0.168 (0.007) 16.6 24 265.03 312.16 289.96 (13.67)
Acacia seyal 14 43.928 53.071 46. 50 (0.684) 0.13 0.583 0.290 (0.037) 7.6 34.4 80.71 357.6 194.24 (21.72)
Acacia gourmaensis 02 47.55 48.09 47.824 (0.269) 0.297 0.349 0.323 (0.025) 13.4 19 160.11 137.80 148.95 (11.15)
Combretum glutinosum 11 41.737 45.959 44.72 (0.438) 0.14 0.358 0.241 (0.020) 8 32 125.94 320.95 201.36 (19.15)
Pterocarpus erinaceus 21 46.779 51.645 49.438 (0.278) 0.164 0.427 0.242 (0.014) 6.9 44.7 110.09 295.09 216.28 (10.63)
Anogeisus leiocarpus 16 44.037 46.003 44.917 (0.167) 0.08 0.273 0.128 (0.012) 6.9 32.4 161.30 570.05 386.52 (28.28)
Mitragyna inermis 18 44.978 47.74 46.724 (0.174) 0.177 0.354 0.243 (0.011) 7 34.5 129.46 262.19 199.40 (9.23)
Lannea microcrapa 20 42.091 45.938 44.282 (0.209) 0.148 0.405 0.273 (0.015) 7 50.3 110.95 306.08 173.47 (11.14)
Lannea acida 6 43.408 45.164 44.526 (0.248) 0.14 0.386 0.265 (0.035) 10.8 36 115.60 320.80 186.92 (30.61)
Ficus sp 21 43.931 46.38 45.153 (0.139) 0.16 0.427 0.294 (0.015) 8.6 52.7 105.3 286.90 163.14 (9.83)
Crosopteryx febrifuga 18 47.662 52.229 49.172 (0.217) 0.118 0.306 0.182 (0.014) 5.6 30.6 161.14 417.54 295.68 (20.50)
Entada Africana 15 45.852 48.377 47.098 (0.191) 0.242 0.475 0.357 (0.016) 8.4 27.6 100.09 196.18 135.97 (6.75)
Parkia biglobosa 23 44.02 47.636 46.516 (0.214) 0.127 0.396 0.201 (0.013) 8.6 62.4 119.40 358.43 247.85 (12.35)
Vitelaria paradoxa 22 45.972 50.032 47.942 (0.228) 0.13 0.337 0.228 (0.010) 8 60 136.41 367.23 220.11 (11.37)
Azadirachta indica 16 47.253 52.999 49.005 (0.413) 0.104 0.302 0.177 (0.014) 8.8 50.5 162.43 474.64 302.38 (22.53)
Anacardium occidentale 25 44.928 47.693 46.446 (0.138) 0.103 0.32 0.161 (0.011) 9.2 57.9 146 441.34 375.79 (17.58)
Eucalyptus grandis 7 47.018 49.031 47.744 (0.350) 0.125 0.191 0.157 (0.011) 5.7 29.2 247.25 376.14 310.57 (21.94)
  1. % dm, percentage of C and N in dry matter; n, number of selected trees. The stem wood samples of selected trees were extracted at 1.3 m of the ground. DBH range, range of diameter at breast height of sampled tree species. Figures in bracket represent the standard error (SE) of the mean