Nitrogen (N) cycling was analyzed in the Kalahari region of southern Africa, where a strong precipitation gradient (from 978 to 230mm mean annual precipitation) is the main variable affecting vegetation. The region is underlain by a homogeneous soil substrate, the Kalahari sands, and provides the...
Interactions Between Individual Plant Species and Soil Nutrient Status in Shortgrass Steppe The effect of plant community structure on nutrient cycling is fundamental to our understanding of ecosystem function. We examined the importance of plant ... MA Vinton,IC Burke - 《Ecology》 被引量: 1052...
In general, microorganisms play a key role in the transformation of nitrogen into its many available forms and thereby influence primary productivity in terrestrial and aquatic ecosystems. An understanding of nitrogen cycling in soils is critical to sustain the productivity of natural and managed ...
100 kg C ha~(-1) year~(-1), thereby causing depletion of the organic soil layer. 展开 关键词: dynamic modelling mycorrhiza nitrogen addition nitrogen cycling organic nitrogen uptake spruce forest 会议名称: 2nd International Nitrogen Conference , Oct 14-18, 2001, Potomac, Maryland, USA ...
environmental pollution by nitrogenous compounds,and the focus is how to simulate soil nitrogen cycling processes correctly.In this paper,the primary soil nitrogen cycling processes were reviewed in brief,with 13 cycling models and 6 simulated cycling processes introduced,and the parameterization of ...
(redirected fromNitrogen cycling) Thesaurus Medical Encyclopedia nitrogen cycle n. The circulation of nitrogen in nature, consisting of a cycle of chemical reactions in which nitrogen from the atmosphere is fixed in compounds in soil or water, assimilated by plants and animals, released to the soil...
Thus, gross soil N transformation rates should provide a way to confirm more directly whether soil N turnover rates become faster and the nitrogen conservation potential decreases as annual precipitation decreases9. Moreover, 15N tracing studies can provide more detailed information on N cycling ...
Soil biochar amendment in a nature restoration area: effects on plant productivity and community composition Biochar (pyrolyzed biomass) amendment to soils has been shown to have a multitude of positive effects, e.g., on crop yield, soil quality, nutrient cycling,... TFJVD Voorde,TM Bezemer,...
The consequences of chronic nitrogen additions on N cycling and soilwater chemistry in a Sitka spruce stand, North Wales Major changes in dissolved nitrogen (N) leaching losses occurred during 5 yr of weekly applications of N to the forest floor of a 30-yr-old Sitka spruce ( ... B.A. ...
This book is a single-volume treatment of the biochemical cycles in soil. It examines all major aspects of nutrient cycling, including fluxes with other ecosystems, biochemical pathways and transformation, gains and losses, chemical fixation reactions, and plant availability. It integrates environmental...