新华社银川７月２４日电（记者 艾福梅、郑一晗）记者从国家林业局三北防护林建设局获悉，三北工程累计完成造林保存面积２５１１．７万公顷，项目区森林覆盖率从１９７７年的５．０５％提高到目前的１２．４％。

    The xinhua news agency on July 24, yinchuan（Reporter YiFuMei、Zheng a Han）Reporters from the state forestry administration three north shelter forest construction bureau learned，Three north project has been finished afforestation save area of 25.117 million ha，The project the forest coverage rate from 5.05% in 1977 to 12.4% of the current increase。

    记者从三北防护林建设局获悉，三北防护林工程区森林蓄积量由１９７７年的７．２亿立方米增加到现在的１３．９亿立方米，净增６．７亿立方米，年产木材２４００多万立方米。营造各种经济林４００万公顷、薪炭林９２．７万公顷、灌木饲料林５００多万公顷，为农民群众的增收致富、农村能源需求、畜牧业发展奠定了坚实的基础，促进了地方经济发展，成为统筹人与自然和谐发展的标志性工程。

    Reporters from three north shelter forest construction bureau learned，Three north shelter forest movement by 1977 the volume of 720 million cubic meters of increased to now 1.39 billion cubic meters，Net of 670 million cubic meters，More than 2400 cubic meters of wood。Build 4 million hectares of forests、XinTanLin 927000 hectares、Shrubs feed for 500 hectares，For the farmers' income to get rich、Rural energy demand、Development of animal husbandry laid solid foundation，To promote the development of the regional economy，Be to plan as a whole the human and the nature harmonious development of the symbol of engineering。

    同时，治理沙化土地２７．８万平方公里，控制水土流失面积３８．６万平方公里，保护农田２２４８．６万公顷。第四次全国荒漠化、沙漠化监测数据表明，三北工程区沙化土地面积年均净减少１５００平方公里左右。区域内重点治理的毛乌素、科尔沁两大沙地首次在２０００年后出现沙化土地减少的逆转趋势，目前逆转趋势继续保持并呈现出沙地综合治理与利用的良好局面，呼伦贝尔沙地在２００９年也出现首次逆转。

    At the same time，Control desertification land 27.8 square kilometers，To control soil and water erosion area of 38.6 square kilometers，Protect the farmland 22.486 million hectares。The fourth national desertification、Desertification monitoring data shows，Three north desertification land area with an average annual net applied to reduce 1500 square kilometers。Area of the key management has、Especially for the first time in two big sandy desertification land reduce appeared 2000 years later the reversal of the trend，At present trend reversal to keep and presented the comprehensive management and utilization of the sand good aspect，The hulunbuir sand in 2009 for the first time in reverse。

    据三北防护林建设局介绍，２０１１年三北工程建设进入五期建设的新阶段。根据《“三北”五期工程规划》，到２０２０年，工程区森林覆盖率由现在的１２．４％提高到１４．１１％以上，５０％以上可治理沙地面积得到初步治理，７０％以上水土流失区治理面积得到有效控制，８０％以上的农田实现林网化，６０％以上的退化林分得到有效修复。

    According to three north shelter forest construction bureau introduced，In 2011 three north project construction phase of construction in the new stage of the five。According to《“Three north”Five phase of the project planning》，By 2020，The forest coverage rate applied by now to 12.4% above，More than 50% over the sand area can get primary control，More than 70% of local water and soil management controlled effectively，More than 80% of the farmland LinWangHua realization，More than 60% of the forest degradation effectively repair。

    三北防护林工程是我国在西北、华北北部、东北西部实施的一项重大战略决策。这项工程自１９７８年开始实施，计划到２０５０年结束，建设范围东起黑龙江宾县，西至新疆乌孜别里山口，全长８０００公里，宽４００至７００公里，横穿１３个省份的５５１个县，占国土总面积的４２．４％。

    Three north shelter forest project in the country in the northwest、Northern north China、The implementation in the western of northeast China is a major strategic decision。The project started in 1978 to implement，Plan to an end in 2050，Construction east heilongjiang Penn county within range，West to udinese in xinjiang kirgiz don't pass on foot，The 8000 km，Width of 400 to 700 kilometers，13 provinces across the 551 counties，Accounting for 42.4% of the total land area。