نتایج جستجو برای: grazing systems

تعداد نتایج: 1196379  

Journal: :Grass and Forage Science 2022

Grassland degradation has been observed worldwide and is often a result of overexploitation or abandonment. Knowledge-driven precise grazing management required to use grasslands' potential in sustainable way. Information gaps lead inefficiencies land ecosystem service provision. Rapid advances automated sensors information technologies for acquisition on herbage availability, controlling anima...

2017
Yang Liu Caiyu Yan Cory Matthew Brennon Wood Fujiang Hou

Greenhouse gas (GHG) emissions from livestock grazing systems are contributing to global warming. To examine the influence of yak grazing systems on GHG fluxes and relationships between GHG fluxes and environmental factors, we measured carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O) fluxes over three key seasons in 2012 and 2013 from a range of potential sources, including: alpine m...

2014
Joseph Páez Chávez Ekaterina Pavlovskaia Marian Wiercigroch

We investigate the complex bifurcation scenarios occurring in the dynamic response of a piecewise-linear impact oscillator with drift, which is able to describe qualitatively the behaviour of impact drilling systems. This system has been extensively studied by numerical and analytical methods in the past, but its intricate bifurcation structure has largely remained unknown. For the bifurcation ...

2005
P. Gourley

Managing uncertainty and risk is an increasing challenge for running profitable grazing systems. There is continual pressure to increase efficiency and productivity, while at the same time there is mounting scrutiny of the impact of grazing systems on the environment. Of particular interest is the impact of nitrogen and phosphorus losses from grazed pasture systems to water and the atmosphere. ...

2009
X-C Zhang

It is a common practice to grow winter wheat (Triticum aestivum L.) as a dual-purpose crop in the U.S. Southern Great Plains to decrease production risk and to increase profit margin through cattle (Bos taurus) production. Crop management of the dual-purpose wheat is complex because of the tradeoffs between beef production and wheat grain yield. A wheat grazing model helps in making optimal dec...

Journal: :Netherlands Journal of Agricultural Science 1985

Journal: :Agroforestry Systems 2021

Silvopastoral systems are multifunctional that combine herbage, shrub and tree layers with grazing animals in a single site. The multiple possible combinations of components within these creates different options have common the capacity to deliver positive outcomes related land productivity environmental climatic benefits. This editorial provides perspective diversity ancient more recent silvo...

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