prevent desertification造句

• Article 35 people ' s governments at all levels shall adopt measures to maintain and protect irrigation and drainage facilities , ameliorate the soil to raise fertility and prevent desertification , salinization , water loss and soil erosion and pollution
  第三十五条各级人民政府应当采取措施，维护排灌工程设施，改良土壤，提高地力，防止土地荒漠化、盐渍化、水土流失和污染土地。