Search National Agricultural Library Digital Collections

Displaying all 4 items start over

1. A mechanistic treatment of the dominant soil nitrogen cycling processes: model development, testing, and application

Description:
Includes references
Author:
Maggi, F. , Gu, C. , Riley, W.J. , Hornberger, G.M. , Venterea, R.T. , Xu, T. , Spycher, N. , Steefel, C. , Miller, N.L. , Oldenburg, C.M.
Subject:
nitrogen , biogeochemical cycles , agricultural soils , gas emissions , losses from soil , leaching , nitrogen fertilizers , fertilizer application , anhydrous ammonia , nitrate nitrogen , nitrites , irrigation rates , nitrification , denitrification , soil bacteria , irrigation , simulation models , mathematical models , model validation , denitrifying bacteria , California
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2008

2. A Subsurface, Closed-Loop System for Soil Carbon Dioxide and Its Application to the Gradient Efflux Approach

Description:
Includes references
Author:
De Sutter, T.M. , Sauer, T.J. , Parkin, T.B. , Heitman, J.L.
Subject:
loam soils , carbon dioxide , chemical concentration , spatial distribution , temporal variation , spatial variation , quantitative analysis , analytical methods , sampling , sensors , estimation , equations , mathematical models , gas emissions , rain , depth , soil water content
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2008

3. Effects of Soil Physical Nonuniformity on Chamber-Based Gas Flux Estimates

Description:
Includes references
Author:
Venterea, Rodney T. , Baker, John M.
Subject:
soil profiles , gas emissions , measurement , accuracy , agricultural soils , tillage , greenhouse gases , mathematical models , equations , simulation models , bulk density , soil water content , diffusivity , porosity
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2008

4. Sequestration of carbon in harvested wood products for the United States

Description:
Includes references
Author:
Skog, Kenneth E.
Subject:
carbon sequestration , wood products , pulp and paper products , greenhouse gases , gas emissions , equations , estimation , methodology , calibration , mathematical models , model validation , United States
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2008