**1.1 Greenhouse gas emission**

Greenhouse gases are a combination of CH4, N2O and F-gases (HFCs, PFCs and SF6). Pakistan contributed 0.8% to global greenhouse gas emissions while standing on the 135th rank in per capita greenhouse gas emissions, such as 1.9 tonnes per capita, 1/3 of the world average. It is projected to reduce more than 20% of emissions by 2030. The agriculture sector had got the 2nd number of those contributing 24% in greenhouse gas emissions globally. In the future, GHG emissions levels are expected to increase numerous times in different sectors. It relies on the assumption that the anticipated whole GHG emissions are coherent with the economic growth approach which will be more than triple by 2020 and increase about 23 times by 2050 (compared to 1994 emissions). **Figure 1** illustrates the sector-wise GHG emissions projection during 1994, 2008, 2012, 2015 and 2020, whilst **Figure 2** displays future emission scenarios in 2030 and 2050 in which GHG = greenhouse gas and MtCO2 = million tons of carbon dioxide equivalent.
