Japan
The Japanese agricultural sector accounts for about 1.4% of the total country's GDP. Only 12% of Japan's land is suitable for cultivation. Due to this lack of arable land, a system of terraces is used to farm in small areas. This results in one of the world's highest levels of crop yields per unit area, with an overall agricultural self-sufficiency rate of about 50% on fewer than cultivated.
Japan
, 46.1% of energy in Japan was produced from petroleum, 21.3% from coal, 21.4% from natural gas, 4.0% from nuclear power and 3.3% from hydropower. Nuclear power produced 9.2 percent of Japan's electricity, , down from 24.9 percent the previous year. However, by May 2012 all of the country's nuclear power plants had been taken offline because of ongoing public opposition following the Fukushima Daiichi nuclear disaster in March 2011, though government officials continued to try to sway public opinion in favor of returning at least some of Japan's 50 nuclear reactors to service. , two reactors at Sendai are likely to restart in early 2015. Japan lacks significant domestic reserves and so has a heavy dependence on imported energy. Japan has therefore aimed to diversify its sources and maintain high levels of energy efficiency.