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Filtering by: Subject Soil enzymology -- Northwest, Pacific Degree Field Forest Science

Influences of nitrogen on carbon dynamics in forest soil and density fractions

Creator:

Swanston, Christopher W.

Abstract:

Application of N fertilizer is a common forest management practice in the Pacific Northwest, yet the long-term influence of fertilization on forest soil properties is not well known. Although elevated N often increases mineralization of C and N from labile organic matter, negative effects have been documented in recalcitrant organic...

Resource Type:

Dissertation
Characteristics of dissolved organic matter (DOM) and its stabilization in forest soil

Creator:

Yano, Yuriko

Abstract:

Dissolved organic matter (DOM) plays an important role in transport of C and essential nutrients such as N, P and S. DOM is also critical for the formation of soil organic matter (SOM), which is the largest terrestrial C pool. Nonetheless, we lack a basic understanding of what controls immobilization...

Resource Type:

Dissertation
Root decomposition in three coniferous forests : effects of substrate quality, temperature, and moisture

Creator:

Chen, Hua

Abstract:

Controls of substrate quality, temperature, and moisture on woody root decomposition in the Pacific Northwest were explored using chronosequences, time series, laboratory incubations, and simulation modeling approaches at three sites: Cascade Head (CAH), H. J. Andrews (HJA), and Pringle Falls Experimental Forests (PRF). In the chronosequence study, a structural component-oriented...

Resource Type:

Dissertation