|Natural Gas Combined Cycle plants||
Fuel switching, or the replacement of fossil fuels with a high carbon content with low-carbon fuels, is one of the principal methods suggested to reduce CO2 emissions from energy consumption in the near future. Since natural gas has a lower carbon content than coal or oil, switching from coal to gas as the primary fuel for electricity generation can result in a 50% reduction of CO2 emissions per kWh
Non-motorised transport (NMT) is often a key element of successfully encouraging clean urban transport. It can be a very attractive mode of transport for relatively short distances, which make up the largest share of trips in cities. The key to reversing the trend towards more private vehicle use is making walking and cycling attractive, together with improving public transport. This can be done by a range of activities including construction of sidewalks and bike lanes, bike sharing programmes, urban planning and pedestrian-oriented development.
|Nutrient management: mycorrhiza||
Mycorrhiza assist plants in obtaining soil nutrients. Therefore, any resulting stimulations in plant growth provide additional plant residue, which in turn can lead to increased carbon storage in the soil (Lal et al., 1998; Smith et. al., 2008). However, mycorrhiza can also promote carbon sequestration through a second mechanism. Mycorrhizae release glomalin, which is a glycoprotein that serves as gluing agent that facilitates soil aggregate formation, improvement of soil physical properties, and sequestration of carbon in the soil (Rillig, 2004; Subramanian et al., 2009).
|Nutrient management: nitrogenous fertilisers||
Efficient use of nitrogenous fertilisers can reduce N2O emissions from agricultural fields. In addition, by reducing the quantity of synthetic fertilisers required, improved management can also reduce CO2 emissions associated with their manufacture. In this article a variety of fertiliser management technologies are discussed in brief, followed by a discussion on their relative advantages and disadvantages.