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Effect of Nitrogen Addition and Weed Interference on Soil Nitrogen and Corn Nitrogen Nutrition
Duration of weed interference nitrogen uptake
2015/12/23
Weeds cause crop loss indirectly by reducing the quantity of resources available for growth. Quantifying the effects of weed
interference on nitrogen (N) supply, crop growth, and N nutrition may assi...
Spatial and temporal effects of nitrogen addition on root life span of Leymus chinensis in a typical steppe of Inner Mongolia
Leymus chinensis N addition root longevity root survival soil layers spatial and temporal effect
2015/2/5
To understand root dynamics of the native, perennial clonal grass Leymus chinensis in Inner Mongolia steppe, we examined spatial and temporal effects of N addition on root survivorship and longevity t...
Tradeoffs and thresholds in the effects of nitrogen addition on biodiversity and ecosystem functioning: evidence from inner Mongolia Grasslands
aboveground biomass ecological restoration ecosystem management Eurasia steppe nitrogen enrichment plant functional group composition species richness
2015/2/4
Nitrogen (N) deposition is widely considered an environmental problem that leads to biodiversity loss and reduced ecosystem resilience; but, N fertilization has also been used as a management tool for...
Comparing physiological responses of two dominant grass species to nitrogen addition in Xilin River Basin of China
Light response curve Photosynthetic characteristics δ13C Nitrogen use efficiency (NUE) Leymus chinensis Stipa grandis
2015/2/4
The two dominant species, Leymus chinensis and Stipa grandis have different distribution area in the Xilin River Basin:relatively wet and fertile for L. chinensis and dryer and leaner for S. grandis. ...
Chronic nitrogen addition causes a reduction in soil carbon dioxide efflux during the high stem-growth period in a tropical montane forest but no response from a tropical lowland forest on a decadal time scale
Chronic nitrogen addition soil carbon dioxide efflux the high stem-growth period a tropical montane forest a tropical lowland forest
2010/1/21
Atmospheric nitrogen (N) deposition is rapidly increasing in tropical regions. We studied the response of soil carbon dioxide (CO2) efflux to long-term experimental N addition (125 kg N ha−1 yr&...
Effects of variations in time pattern of nitrogen addition on development of HPNS in mice
drug high pressure nervous syndrome animal mice heliox trimix
2009/7/16
The effect of change in injection pattern in nitrogen on threshold pressures of three symptoms associated with compression in helium/nitrogen atmospheres was explored. Excitement threshold pressures d...