论文部分内容阅读
内蒙古自治区敖汉旗地处科尔沁沙地南缘,早在20世纪60年代,由于人口剧增,滥垦滥牧,生态环境遭到严重破坏,全旗林地面积只有125万亩,仅占总面积的10％,水土流失面积达960万亩,占总面积的77.3％,流动半流动沙地达259万亩,且每年以7万亩的速度递增,相当于一年吞噬一个中等乡(镇)的耕地。 为了彻底改变恶劣的生态环境和异常脆弱的生存条件,一场发端于20世纪70年代的以种草植树、防沙治荒为核心的生态建设战
Inner Mongolian Autonomous Region Aohanqi is located in the southern margin of Horqin Sandy, as early as the 1960s, due to the dramatic increase in population, indiscriminate overgrazing, the ecological environment has been severely damaged, the whole forest area of only 125 acres, only the total area Of the total area of 77.3%, mobile semi-mobile sandy land 259 acres, and an annual increase of 70,000 acres, equivalent to one year swallowing a medium-sized township (town) Of arable land. In order to completely change the bad ecological environment and the extremely fragile living conditions, an ecological construction warfare started in the 1970s with planting grass and preventing desertification as its core