Landuse and Soil Organic Carbon Variability in the Old Woman Creek Watershed of North Central Ohio PDF Download
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Author: Jeffrey T. Kroll Publisher: ISBN: Category : Land use Languages : en Pages : 122
Book Description
This study investigated the variability of soil organic carbon within the Old Woman Creek watershed and the influence of landuse, soil texture, geomorphic surface and depth on SOC variability. Soil samples were collected at 0-30 cm and 30-60 cm depths in forest, pasture, conservation tillage and conventional tillage sites in both the Lake Plain and Till Plain. The Lake Plain had higher SOC than the Till Plain, and geomorphic surface had a greater affect at the 30-60cm depth than the 0-30cm depth. SOC was higher at the 0-30cm depth than the 30-60cm depth. Forest and pasture landuses had higher SOC than conservation and conventional tillage landuses. Conventional tillage had higher SOC than conservation tillage. Linear regression models and soil survey data were used to extrapolate SOC data to the watershed. Linear regression models could be useful estimators of SOC when used with site-specific data.
Author: Jeffrey T. Kroll Publisher: ISBN: Category : Land use Languages : en Pages : 122
Book Description
This study investigated the variability of soil organic carbon within the Old Woman Creek watershed and the influence of landuse, soil texture, geomorphic surface and depth on SOC variability. Soil samples were collected at 0-30 cm and 30-60 cm depths in forest, pasture, conservation tillage and conventional tillage sites in both the Lake Plain and Till Plain. The Lake Plain had higher SOC than the Till Plain, and geomorphic surface had a greater affect at the 30-60cm depth than the 0-30cm depth. SOC was higher at the 0-30cm depth than the 30-60cm depth. Forest and pasture landuses had higher SOC than conservation and conventional tillage landuses. Conventional tillage had higher SOC than conservation tillage. Linear regression models and soil survey data were used to extrapolate SOC data to the watershed. Linear regression models could be useful estimators of SOC when used with site-specific data.
Author: Joyce K. Tanzosh Publisher: ISBN: Category : Compost Languages : en Pages : 362
Book Description
Abstract: Riparian zones are the land boundaries that connect aquatic and terrestrial realms, consisting of either natural or planted vegetation. The high productivity and the unique soil and moisture characteristics typical of riparian systems enables them to store relatively large amounts of soil organic carbon (SOC). However, riparian areas may be net emitters of other greenhouse gases (GHGs) because certain environmental conditions such as saturated soils may accentuate the emission of GHGs through methanogenesis and denitrification. Landuse influences the SOC pool and the release of GHGs though its effect on soil properties, temperature and moisture regimes. The objective of this study was to assess the effect of landuse on SOC pool and GHG emissions in riparian zones in two agricultural watersheds in Coshocton, Ohio. In watershed A, the SOC pool (0-100 cm depth) was 251.1 ± 78.1, 193.0 ± 47.2 and 97.9 ± 4.7 Mg ha−1 in riparian grass, riparian forest and cropland systems, respectively. Both riparian systems contained more SOC pool than the upland landuse. In watershed B, the SOC pool was 126.3 ± 3.3, 135.0 ± 29.3 and 95.7 ± 1.2 Mg ha−1 in riparian grass, riparian forest and upland pasture landuses, respectively. No differences were observed among landuses. Likewise, no differences existed between the SOC pool in the grass and forest riparian systems in either watershed sampled. Differences in fine root mass and soil properties were frequently observed among landuses, and were generally linearly related to the SOC pool. Soil properties consistently differed among landuses, yet, the SOC pool did not. These data suggest that site history, land management and ecosystem age were stronger determinants of SOC pool than soil properties. In watershed A, the carbon dioxide (CO2-C) flux (Mg C ha−1 y−1 ) was 24.5 + 2.7, 9.2 ± 1.4 and 19.0 ± 3.3 in the riparian grass, riparian forest and cropland landuses, respectively. In watershed B,CO2-C flux (Mg C ha−1 y−1) was 15.7± 1.8, 9.8 ± 1.1 and 13.9 ± 2.2 in the riparian grass, riparian forest and upland pasture landuses, respectively. The CO2-C flux was positively correlated with both air and soil temperatures across all landuses. In watershed A, methane (CH4-C) flux (kg C ha−1 y−1 )s 44.1 ± 5.8, 32.1 ± 7.7 and 40.9 ± 6.8 in the riparian grass, riparian forest and cropland landuses, respectively. In watershed B, CH4-C flux (kg ha−1 y−1) was 63.3 ± 5.5, 29.4 ± 4.2 and 60.3 ± 5.9 in the riparian grass, riparian forest and pasture landuses, respectively. The CH4-C flux was positively correlated with both air and soil tperatures across landuses. In watershed A, nitrous oxide (N2O-N) flux (kg ha−1 y−1) was 27.4 ± 5.3, 16.0 ± 1.5 and 37.4 ± 8.9 in the riparian grass, riparian forest and cropland landuses, respectively. In watershed B, N2O-N flux (kg N ha−1 y−1 ) was 20.7 ± 4.3, 12.6 ± 1.2 and 15.9 ± 4.8 in the riparian grass, riparian forest and pasture landuses, respectively. The N2O-N flux was positively correlated with precipitation and soil moisture content for several landuses. Land management activities (i.e., tillage, herbicide application, grazing) also influenced GHG emission. Overall, the riparian forests in this study emitted less GHGs and had less global warming potential (GWP) compared to the riparian grasses.
Author: Charles E. Herdendorf Publisher: ISBN: 9780966803495 Category : Estuaries Languages : en Pages : 448
Book Description
A comprehensive ecological study of a Lake Eric estuary and its watershed, including chapters on geology, soils, climatology, hydrolesy, biology, ecology, archaeology, history, and land use. This book serves as a site profile of the only Nation a Estuarine Research Reserve in the Great Lakes Resion. Over 200 color illustrations.
Author: Jeffrey T. Kroll
Author: Jeffrey T. Kroll
Author: 
Author: Gary Stanley Becker
Author: Linda Kothera Courter
Author: James E. Lake
Author: Linda S. Norman
Author: Brent LaSpada
Author: 
Author: Joyce K. Tanzosh
Author: Charles E. Herdendorf