论文部分内容阅读
右玉县位于山西省最西北部的古长城脚下,地处黄土高原的东北端,是丘陵风沙地区的一部分。本县西部中北部广泛分布着太古界变质岩和自垩纪沙页岩,它们的风化物形成大量的细沙,随风飘移。由于多年来的过度放牧,和无限度的垦荒,使植被破坏,岩石裸露,沙漠化有所发展。据测,流沙平均每年前进1.5米——2米;年流失的肥分,相当于年施化肥的6——11倍。为此,右玉县委,近年来号召全县人民大面积的种草种树,治理沙化,并取得了农业生态环境向良性转化的成果。
Youyu County is located at the foot of the ancient Great Wall in the most northwest part of Shanxi Province and is located at the northeast end of the Loess Plateau. It is part of the hilly sandstorm area. Archean metamorphic rocks and Cretaceous sand shale are widely distributed in the central and northern part of the western part of the county. Their weathered materials form a large amount of fine sand and drift in the wind. Due to over-grazing over the years, and unlimited reclamation, the destruction of vegetation, rock bare, desertification has developed. It is measured that the average annual quick move sand 1.5 meters - 2 meters; annual loss of fertilizer, equivalent to 6-11 times annual fertilizer. To this end, Youyu County Committee, in recent years called on the people of the county a large area of grass and trees, control desertification, and achieved the agricultural ecological environment to the benign transformation results.