搜索结果: 1-11 共查到“理学 nitrogen deposition”相关记录11条 . 查询时间(0.095 秒)
Nitrogen deposition mediates the effects and importance of chance in changing biodiversity
community structure ecological drift immigration natural selection neutral theory niche theory
2015/2/4
Nitrogen deposition is changing biodiversity on Earth. We need to understand the underlying mechanisms to conserve biodiversity better. Both selection and chance are potential mechanisms, and they may...
Patterns of dissolved organic carbon and nitrogen fluxes in deciduous and coniferous forests under historic high nitrogen deposition
dissolved organic carbon nitrogen fluxes deciduous and coniferous forests historic high nitrogen deposition
2010/1/21
Numerous recent studies have indicated that dissolved organic carbon (DOC) and nitrogen (DON) play an important role in C and N cycling in natural ecosystems, and have shown that N deposition alters t...
Nitrogen deposition, catchment productivity, and climate as determinants of lake stoichiometry
Nitrogen deposition catchment productivity climate as determinants of lake stoichiometry
2014/4/17
Nearly 1000 Norwegian lakes in catchments with low human activity were surveyed. By covering a wide range of nitrogen (N) deposition (0.1-2 g m-2 yr-1) along a latitudinal and climatic gradient, we cl...
Modelling the ecosystem effects of nitrogen deposition：Model of Ecosystem Retention and Loss of Inorganic Nitrogen
nitrogen deposition Ecosystem Retention
2009/6/8
A catchment-scale mass-balance model of linked carbon and nitrogen cycling in ecosystems has been developed for simulating leaching losses of inorganic nitrogen. The model (MERLIN) considers linked bi...
Modelling the response of soil and soil solution chemistry upon roofing a forest in an area with high nitrogen deposition
nitrate (NO3) sulphate (SO4) soil solution chemistry
2009/6/5
In the Speuld forest, the Netherlands, the dynamic soil acidification model NuCSAM has been applied to a manipulation experiment in which part of the forest was roofed to control nitrogen (N) and sulp...
Trends in nitrogen deposition and leaching in acid-sensitive streams in Europe
Europe acid deposition nitrogen
2009/3/23
Long-term records of nitrogen in deposition and streamwater were analysed at 30 sites covering major acid sensitive regions in Europe. Large regions of Europe have received high inputs of inorganic ni...
Dynamic nitrogen deposition thresholds during forest stand development in a Douglas fir forest analysed with two nitrogen models SMART2 and MERLIN
nutrient throughfall forest floor water spatial variability
2009/3/17
This study focuses on spatial variability of throughfall water and chemistry and forest floor water content within a Douglas fir (Pseudotsuga menziesii, Franco L.) forest plot. Spatial patterns of wat...
Modelling the effects of atmospheric sulphur and nitrogen deposition on selected lakes and streams of the Central Alps (Italy)
MAGIC northern Italy acidification recovery nitrogen
2009/3/12
The dynamic model MAGIC was calibrated and applied to selected sites in north-western Italy (3 rivers, 10 alpine lakes) to predict the future response of surface water to different scenarios of atmos...
Operational mapping of atmospheric nitrogen deposition to the Baltic Sea
Operational mapping atmospheric nitrogen deposition Baltic Sea
2009/3/11
A new model system for mapping and forecasting nitrogen deposition to the Baltic Sea has been developed. The system is based on the Lagrangian variable scale transport-chemistry model ACDEP (Atmospher...
Effects of atmospheric nitrogen deposition on nutrient limitation and phytoplankton biomass in unproductive Swedish lakes
atmospheric nitrogen deposition nutrient limitation phytoplankton biomass unproductive Swedish lakes
2014/5/9
We used chemical data (3,907 lakes) and phytoplankton biomass (chlorophyll a) data (225 lakes) from Swedish lake monitoring programs to assess the effects of atmospheric nitrogen (N) deposition on nut...
Response of stream macroinvertebrate production to atmospheric nitrogen deposition and channel drying
stream macroinvertebrate production atmospheric nitrogen deposition channel drying
2014/5/8
We assessed the effect of atmospheric nitrogen (N) deposition on secondary production in a first-order intermittent stream at the Bear Brook Watershed in Maine (BBWM). BBWM is a paired-catchment exper...