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宁夏回族自治区林业和草原局副局长 徐忠:“三北”工程实施以来,宁夏森林面积由工程建设前的103.05万亩增加到现在的1230万(亩),森林覆盖率从1978年的2.4%提高到11.35%,减少排入黄河泥沙量0.4亿吨。根据第六次全国荒漠化和沙化监测结果显示,宁夏荒漠化土地和沙化土地面积实现连续20多年双缩减。
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