Organic agriculture also creates less soil and water pollution and lower greenhouse gas emissions.

有机农业还减少了土壤污染和水污染，降低了温室气体排放量。

youdao

youdao

youdao

Engineers have found that wetlands, grassy fields and soil or sand filters can take in stormwater with different levels of pollution and release water with a relatively constant cleanliness.

VOA: standard.2010.08.04

Water pollution, soil erosion, deforestation and desertification in the north, where rivers are drying up, have contributed to an estimated loss of one-fifth of agricultural land since 1949.

FORBES: Pollution And Prosperity

For cadmium to be evident in rice grains as well, the soil in which it was grown must have been especially highly polluted, said Jonathan Wong, a Hong Kong biology professor who has studied mainland soil pollution extensively.

WSJ: Cadmium-Tainted Rice Found in Guangzhou

For cadmium to be evident in rice grains as well, the soil in which it was grown must have been especially highly polluted, said Jonathan Wong, a Hong Kong biology professor who has studied soil pollution extensively on the mainland.

WSJ: Cadmium-Tainted Rice Found in Guangzhou