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我国北方地区由于连续多年干旱,国土荒漠化的程度越来越重,沙尘暴等自然灾害已给社会生产造成了巨大威胁。因此改善环境的一项有效措施是植树造林。
Natural disasters such as dust storms have posed a tremendous threat to social production due to the successive years of drought in northern China and the increasing degree of desertification on the land. Therefore, an effective measure to improve the environment is afforestation.