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《China Population Resources and Environment》 2006-03
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Estimate on the Eco-economic Benefits of Rural Energy Sources Construction and De-farming and Reforestation

GUO Xiao-dong NIU Shu-wen LI Guo-zhu WANG hai-hong(Environment and Resources Institute of Lanzhou University,Lanzhou Gansu 730000,China)  
The ecological and economic benefits from using the solar stove and the methane are remarkable in the west Qinling mountain area.The quantity of heat that a farm household with 5 persons obtains from a solan stove with 1.5m~2 acreage and a methane-generating pit with 8 m~3 cubage in each year is equal to 773 kg standard coal,and equivalent to the 1353kg firewood;its net income is 268 yuan.The quantity of firewood substituted in a year is equal to the growth quantity of 0.338 hm~2 of forest land in each year,0.042275hm~2 of woodland would be escaped from being cut.The income that peasants obtain from de-farming and reforestation is 465 yuan/y on average.Beside grain production,the income from de-farming and reforestation is mainly the production cost saved when grain is no longer grown.De-farming and reforestation.taking forest increment as the aim, should be taken as a medium and long-term strategy,and brought into effect steadily.Using the solar stove and the methane,taking to protect existing forests as the goal,is a necessary means to consolidate the effect of de-farming and reforestation and ecological construction.
【CateGory Index】: F323.214;S718.56
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