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Table 3 Number of aggregated data in the SOM dataset for the concerning variables and layers (OL, OFH, M01, M12, M24, M48) available on the 286 Level II plots contained in the AFSCDB.LII.2.2

From: The Level II aggregated forest soil condition database links soil physicochemical and hydraulic properties with long-term observations of forest condition in Europe

 

Forest floor

Fixed depth

 

Forest floor

Fixed depth

Layer/variable

OL

OFH

M01

M12

M24

M48

Layer/variable

OL

OFH

M01

M12

M24

M48

CLAY

  

188

190

219

168

BCE

30

227

246

245

243

185

SILT

  

188

190

219

168

ACE

26

216

242

241

239

182

SAND

  

188

190

219

168

CEC

30

227

246

245

243

185

BD

  

195

184

172

143

BS

30

227

246

245

243

185

BDEST

  

27

29

29

28

EXTRAL

124

183

203

161

157

116

CFMASS

  

67

62

62

24

EXTRCA

134

229

224

202

196

143

CFVOL

  

188

186

171

172

EXTRCD

132

218

228

158

156

122

ORGLAY

183

224

    

EXTRCR

120

191

204

158

157

116

PHCACL2

59

243

259

259

245

188

EXTRCU

133

230

246

173

169

127

PHH2O

47

211

223

218

216

161

EXTRFE

131

203

222

169

166

124

OC

130

242

260

259

244

187

EXTRHG

39

49

58

38

36

36

TON

128

242

260

259

244

187

EXTRK

134

230

224

202

196

143

CN

128

242

259

256

229

160

EXTRMG

134

230

224

202

196

143

EXCHACID

25

213

237

235

233

174

EXTRMN

133

230

225

203

198

145

CARBONATES

4

24

34

36

37

33

EXTRNA

107

178

196

148

146

104

EXCHAL

26

212

242

241

238

181

EXTRNI

121

193

207

161

160

119

EXCHCA

30

227

246

245

243

186

EXTRP

134

230

224

203

198

145

EXCHFE

26

212

242

241

239

182

EXTRPB

133

230

246

172

169

127

EXCHK

30

227

247

246

244

188

EXTRS

123

172

191

152

150

106

EXCHMG

30

227

247

246

244

188

EXTRZN

133

230

246

171

167

125

EXCHMN

30

223

247

246

244

188

REACAL

26

71

166

165

166

125

EXCHNA

30

227

247

246

244

188

REACFE

26

71

166

165

166

125

FREEH

27

218

243

242

239

182

       
  1. Variables for particle size fractions, bulk density (BD), coarse fragments (CF), the organic layer’s dry weight, pH values, organic carbon content (OC), total organic nitrogen (TON), carbonates, exchangeable cations, and extractable elements are considered in this table