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Nitrous Oxide Emission and Methane Consumption Following Compaction of Forest Soils

^a Institute of Soil Science and Forest Nutrition, Univ. of Göttingen, Büsgenweg 2, 37077 Göttingen, Germany
^b Dep. of Environmental Chemistry, Univ. of Kassel, Nordbahnhofstr. 1a, 37213 Witzenhausen, Germany

View larger version (80K): [in a new window]   Fig. 1. Description of the location of gas flux measurement on the skid trail and on the undisturbed forest soil: 1 (control) = uncompacted soil, 2 (USB) = untrafficked soil bordering one side of the trafficked soil, 3 (TSB) = trafficked soil bordering one side on the untrafficked soil, 4 (TSM) = middle of the trafficked soil, 5 (USM) = untrafficked soil between the two wheel tracks.

View larger version (31K): [in a new window]   Fig. 2. (a) Nitrous oxide and (b) CH4 flux (mean of n = 6 and standard deviation) and (c) water-filled pore space (WFPS) at 5- to 10-cm depth in the trafficked soil (TSM) and in the control (uncompacted soil) at the Holzerode site (sandy loam) from April 1999 to March 2000.

View larger version (29K): [in a new window]   Fig. 3. (a) Nitrous oxide and (b) CH4 flux (mean of n = 6 and standard deviation) and (c) water-filled pore space (WFPS) at 5- to 10-cm depth in the trafficked soil (TSM) and in the control (uncompacted soil) at the Ebergötzen site (silt) from April 1999 to October 1999.

View larger version (27K): [in a new window]   Fig. 4. (a) Nitrous oxide and (b) CH4 flux (mean of n = 6 and standard deviation) and (c) water-filled pore space (WFPS) at 5- to 10-cm depth in the trafficked soil (TSM) and of the control (uncompacted soil) at the Billingshausen site (silty clay loam) from April 1999 to March 2000.