关于宁蒙陕农牧交错带重点地区沙尘暴灾害及防治对策

Sandstorm Disasters and Controlling Ways in the Agricultural and Pasturing Interlaced Zone of Ningxia, Inner Mongolia and Shaanxi

论述了宁、蒙、陕农牧交错带重点地区沙尘暴的时空分布 ,揭示了沙尘暴形成的原因 ,重点论证了人为不合理的经营在该区沙尘暴形成中的作用 ,并提出调整该区不合理的经营方向、方式 。

There are four large sandstorm sources in China, they are source in Hexi Corridor of Gansu Province and Alxa of Inner Mongolia, source in Taklimakan Desert of Tarim Basin, source in Hunshandake and Horqin sandy lands and source in area along the Great Wall in Ningxia, Inner Mongolia and Shaanxi provinces. The fore two sources are situated in the desert and desertified areas west to Helanshan Mountain and the later two in the agricultural and pasturing interlaced zone east to the mountain. In the interlaced zone the causes of sandstorm formation include natural factors (aridization, precipitation decreasing, frequent gale, and adequate sand sources etc.) and anthropogenic factors (reclamation, over grazing, excessively herb digging etc.).