[Translation from Japanese to English ] Before the World War II, Japan used to depend on domestic recyclable resource...

Original text

戦前日本はエネルギー源を森林や水力発電のような国内の再生可能資源に依存していたため、家庭エネルギーの国内自給率は非常に高かった。戦後のエネルギー革命は日常生活に様々な利点をもたらしたが、エネルギーの自給率を低下させ、エネルギー供給の不安定性を高めた。また化学肥料の普及と相まり森林資源の必要性は急速に低下した。その結果急激な都市への人口集中によって市街地の薪炭林は急速に宅地に転用されていった。戦前の都市家庭でエネルギー消費が効率的になったとはいえ、その度合いは限定的であった。

Translation / English

Before the World War II, Japan used to depend on domestic recyclable resources such as forestry and hydraulic power, so the domestic self-sufficiency rate for energy consumption per household used to be high. The post war energy revolution has brought various benefits to our daily life, however it has negatively resulted the decrease in self-sufficiency rate and higher instability of the energy supply. Further, the necessity of the forestry resource has rapidly declined along with the decrease of demand for chemical fertilizer. As a result, the drastic increase of polulation in the city area has rapidly diverted the firewood forestry to the house building materials. Although the energy consumption rate of the hoseholds in city before the war time used to be efficient, its ratio was limited.

Translation / English

Japan depended on renewable resources such as woods and　hydroelectric power in the country, which realized the high self-efficient ratio of home energy . The energy revolution brought about a variety of advantages to our daily life, but it also lowered the self-efficient ratio of energy and raised the instability of energy supply. It also　drastically lowered the demand of forest resources combined with the spread of chemical fertilizers. As a result, because of the rapid population concentration, the fuelwood forests in urban areas have been rapidly converted to　dwelling lands. They say energy consumption at urban homes has become efficient before the war, but it was limited.

Translation / English

Before WWⅡ, Japanese personal-use energy self‐sufficiency ratio was very high. That is because, Japanese energy resource depended on recyclable resources like forest-resource or hydroelectric power generation. Post WWⅡ Energy-Revolution brought variety of advantages, but on the other hand, it lowered Japanese energy self-sufficiency and made energy supply unstable.
Moreover as chemical fertilizer come to be popular, necessity of forest-resource rapidly lowered. As a result of these factors, big cities come to be overpopulated and fuelwood forests located in urban area rapidly changed into housing sites. It is true that energy consumption efficiency of urban-area-family got better before WWⅡ, but these phenomenon was still spotty.

Translation / English

Since Japan depended on domestic recyclable resources such as forests and hydro power for energy before the Second World War, the domestic household energy self-sufficiency rate was very high. The postwar energy revolution offered numerous benfits to daily life, however it decreased the energy self-sufficiency rate and increased the instability of energy supply. In addition, the need for forest resources was decreased in tandem with the penetration of chemical fertilizers. As a result, due to the sudden concentration of the population into urban areas, fuelwood forests in urban areas were diverted to housing land. Despite of efficient energy consumption in urban households before the Second World War, the extent was limited.

Translation / English

Before World War Ⅱ, the household energy self-sufficiency rate of Japan was quite high because they depended on some woods and on domestic renewable resources such as hydroelectric power generation about their source of energy. The energy revolution after the war gave them various of advantages on their daily lives, however it made the energy self-sufficiency rate decrease and led the instability of their energy supply down. Further more, the necessity of forest resources fell down rapidly with diffusion of chemical fertilizer. Therefore, fuelwood forests of some urban areas were quickly diverted to housing sites because a lot of people came to the city. The energy consumption of some homes before the war became efficiently, but the rate was limited.

Translation / English

Before World War Ⅱ,In Japan, The source of energy depended on the resources such like forest or hydroelectric power. So The self-surpporting rate of energy at home was very high. After World WarⅡ, The revolution of energy gave us some benefit in our life. But It made self-surppoting rate lower and device of energy unstable. Also wide spread use of chemical fertilizer caused that the needs of the resource of woods became lower. The result was that forest for fuel in city area was diverted residential land. The consuption at home in the city became effectively, but the degree was limited.