Harvard and Howland Forest Data Used to Determine Matric Potential Curves for the well and moderately well and poorly drained sites "Data was determined by Ellis Edwards, NC State University on core samples collected in 1998 from Harvard and Howland forest" Pressure is units of cm water volumetric water content for each sites is units cm3 cm-3 each volumetric soil moisture value is the average of 2 to 4 samples taken for that depth "Our site names are shown in the first row, underneath them is the drainage class and then the depth overwhich the sample was taken" "NWM,NWN,SWF,SWM and SWN are Harvard Forest sites. The NW is the north-west transect from the EMS tower, the SW is the south-west transect from the EMS tower." the original data is listed below: there was some core shrinkage in samples which was accounted for in determining volumetric and pressure relationships: these samples have an * beside their numbers Note: we did not use pressures 0 and 3.8 for generation of our matric potential curves "these volumtric soil moisture values are the average of replicate samples, data shown below" NWM NWM NWN NWN SWF SWF SWM SWM SWN SWN Tower Tower Nutrient Cycling Nutrient Cycling Mod. Well drained Mod. Well drained Well drained Well Drained Well Drained Well Drained Mod. Well Drained Mod. Well Drained Poorly Drained Poorly Drained Well drained Well Drained Well drained Well Drained Pressure 0-10cm 10-20cm 0-10cm 10-20cm 0-10cm 10-20cm 0-10cm 10-20cm 0-10cm 10-20cm 0-10cm 10-20cm 0-10cm 10-20cm 60 0.5255 0.5235 0.4435 0.4975 0.4835 0.5395 0.4390 0.4355 0.4895 0.4535 0.3380 0.3290 0.3437 0.3280 100 0.4825 0.4815 0.3660 0.4050 0.4045 0.4435 0.3875 0.3760 0.4430 0.4120 0.2988 0.2908 0.3037 0.2990 300 0.3930 0.4000 0.2390 0.2525 0.2905 0.3225 0.2910 0.2860 0.3665 0.3455 0.2438 0.2520 0.2587 0.2757 500 0.3645 0.3720 0.2200 0.2260 0.2760 0.2940 0.2735 0.2655 0.3425 0.3245 0.2238 0.2405 0.2350 0.2693 1017 0.1125 0.1386 0.1173 0.1588 0.1228 0.1423 0.1129 0.1475 0.0990 0.1267 0.1347 0.1705 0.1354 0.1796 15000 0.0956 0.0884 0.0743 0.1080 0.0871 0.0856 0.0805 0.0940 0.0803 0.0886 0.0688 0.1073 0.0750 0.1338 core corrected original data sinkage core Pressure(cm water) Db Site cm cm3 0 3.8 60 100 300 500 1017 15000 g/cc NWM 0-10cm 0 347.5 0.741 0.699 0.615 0.564 0.428 0.385 0.136 0.127 0.637 NWM 0-10cm 0 347.5 0.831 0.680 0.436 0.401 0.358 0.344 0.089 0.065 0.326 NWM 10-20cm 0 347.5 0.727 0.700 0.593 0.539 0.427 0.389 0.149 0.111 0.631 NWM 10-20cm 0.3 333.65 0.719 0.679 0.454 0.424 0.373 0.355 0.128 0.066 0.543 NWN 0-10cm 0.2 338.21 0.608 0.586 0.447 0.358 0.228 0.204 0.118 0.073 0.730 NWN 0-10cm 0 347.5 0.611 0.541 0.440 0.374 0.250 0.236 0.117 0.075 0.821 NWN 10-20cm 0.4 329.09 0.698 0.633 0.478 0.374 0.241 0.213 0.127 0.081 0.823 NWN 10-20cm 0.6 319.98 *0.568 0.614 0.517 0.436 0.264 0.239 0.191 0.135 1.048 SWF 0-10cm 0 347.5 0.676 0.643 0.511 0.451 0.347 0.335 0.119 0.098 0.636 SWF 0-10cm 0 347.5 0.616 0.583 0.456 0.358 0.234 0.217 0.126 0.076 0.996 SWF 10-20cm 0.4 329.09 *0.592 0.611 0.490 0.402 0.265 0.238 0.152 0.087 1.004 SWF 10-20cm 0.3 333.65 *0.672 0.677 0.589 0.485 0.380 0.350 0.132 0.084 0.759 SWM 0-10cm 0 347.5 0.739 0.660 0.444 0.381 0.289 0.274 0.101 0.073 0.613 SWM 0-10cm 0 347.5 0.620 0.570 0.434 0.394 0.293 0.273 0.125 0.088 0.955 SWM 10-20cm 1.3 286.7 *0.741 0.747 0.499 0.429 0.328 0.303 0.148 0.093 0.614 SWM 10-20cm 0.9 306.3 *0.589 0.626 0.372 0.323 0.244 0.228 0.147 0.095 0.909 SWN 0-10cm 0 347.5 0.861 0.750 0.483 0.434 0.370 0.356 0.107 0.084 0.240 SWN 0-10cm 0 347.5 0.768 0.668 0.496 0.452 0.363 0.329 0.091 0.077 0.559 SWN 10-20cm 0 347.5 0.826 0.735 0.462 0.419 0.361 0.333 0.116 0.094 0.413 SWN 10-20cm 0 347.5 0.527 0.506 0.445 0.405 0.330 0.316 0.137 0.083 1.081 Tower 0-10cm 0.2 338.21 0.635 0.593 0.371 0.312 0.261 0.241 0.149 0.088 0.969 Tower 0-10cm 0.5 324.53 0.512 0.503 0.331 0.294 0.207 0.180 0.106 0.040 1.158 Tower 0-10cm 0.2 338.21 0.532 0.507 0.326 0.294 0.229 0.208 0.149 0.058 1.154 Tower 0-10cm 0 347.5 0.642 0.562 0.324 0.295 0.278 0.266 0.136 0.090 0.780 Tower 10-20cm 0 347.5 0.578 0.542 0.343 0.291 0.239 0.237 0.163 0.098 0.999 Tower 10-20cm 0.7 315.42 0.542 0.509 0.271 0.239 0.220 0.207 0.182 0.126 1.116 Tower 10-20cm 0 347.5 0.654 0.583 0.330 0.299 0.278 0.267 0.186 0.134 0.901 Tower 10-20cm 0 347.5 0.595 0.559 0.372 0.334 0.271 0.251 0.151 0.071 1.019 Nutrient Cycling 0-10cm 0.2 338.21 0.634 0.597 0.343 0.307 0.272 0.251 0.146 0.089 0.980 Nutrient Cycling 0-10cm 0.7 315.42 0.521 0.519 0.351 0.301 0.221 0.186 0.097 0.037 0.980 Nutrient Cycling 0-10cm 0 347.5 0.710 0.596 0.337 0.303 0.283 0.268 0.163 0.099 0.738 Nutrient Cycling 10-20cm 0.7 315.42 0.389 0.356 0.337 0.302 0.277 0.270 0.184 0.124 0.799 Nutrient Cycling 10-20cm 0.7 315.42 0.586 0.575 0.382 0.353 0.337 0.331 0.182 0.145 0.739 Nutrient Cycling 10-20cm 0 347.5 0.615 0.435 0.265 0.242 0.213 0.207 0.172 0.132 0.812