By established facilities and use organic matter of animal manure, human waste, plant straw for anaerobic fermentation to produce inflammable biogas for uses of lighting, cooking with the residue liquid and dreg for high quality organic fertilizer.

• Compiler: Yaolin Wang
• 08/27/2010 10:45 vm.

Belts of trees, planted in a rectangular grid pattern or in strips within, and on the periphery of, farmland to act as windbreaks.

• Compiler: Meili WEN
• 12/15/2010 1:34 nm.

Level bench terraces on the Loess Plateau, converting eroded and degraded sloping land into a series of steps suitable for cultivation.

• Compiler: Yaolin Wang
• 12/09/2010 1:36 nm.