Learn about two cycles of the matter: the carbon cycle and the nitrogen cycle. Understand how important they are for life, and explore some ways to...
carbonnitrogen cycle 碳氮循环,碳循环,氮循环 cycle on phr. 轮回速率 cycle by cycle device 逐周装置 energy cycle 能量循环,能量变化周期,生物钟 run in cycle 周期性出现,周而复始,往复无穷 anovulatory cycle 无排卵周期 closed cycle 封闭式循环,闭式循环,回合循环 absorption cycle 吸收循环 cal...
* Describe the short term cycling of carbon through the processes of photosynthesis and respiration. * Identify carbon sinks and carbon sources.* Describe short term and long term storage of carbon.* Describe how human actions interfere with the natural carbon cycle.*...
Deep carbon and nitrogen cycles played a critical role in the evolution of the Earth. Here we report on successful studying of speciation in C-O-H-N systems with low nitrogen contents at 6.3 GPa and 1100 to 1400 °C. AtfO2near Fe–FeO (IW) equilibrium, the synthesised fluids contain...
In agricultural systems, optimization of carbon and nitrogen cycling through soil organic matter can improve soil fertility and yields while reducing negative environmental impact. A basic tenet that has guided the management of soil organic matter for d
1 The Deep Nitrogen Cycle on Earth The Earth’s N-cycle links to observations from planetary and extraterrestrial N-reservoirs and to near-surface nutrient cycling and palaeoenvironmental investigations of ancient Earth. Regarding the evolution of the Earth’s atmosphere, a key aspect is whether ...
With the deep investigation on karst carbon cycle, mechanism and carbon sink effect, and the improvement of watershed carbon sink measurement methods and regional sink increase evaluation approaches. Karst carbon sink is expected to be included in the list of atmospheric CO2 sources/sinks of the ...
Methane oxidation is not directly coupled to electron acceptors such as nitrate, sulfate or oxidized Fe and Mn, although thermodynamic considerations suggest that these processes should be possible. The Nitrogen Cycle Unlike carbon, the mineralization of which results in CO2 production, more varied ...
Carbon and nitrogen cycle dynamics in the O‐CN land surface model: 1. Model description, site‐scale evaluation, and sensitivity to parameter estimates. Global Biogeochem. Cycles 24, GB1005 (2010). Zaehle, S. et al. Carbon and nitrogen cycle dynamics in the O‐CN land surface model: 2...
It is organized as a framework of modules that represent main ecosystem processes and functions including but not limited to: assimilation, respiration, resource allocation/growth, establishment, mortality, disturbance, carbon and nitrogen cycling. The vegetation is modelled as plant functional types (...