Songnen Sandy Land lies in the eastern fringe of huge sandy belt of middle latitude inEurasia Continent Here is also the eastern fringe of desertification-prone land in China. Its specialconditions su
Sandstorm is a frequently occurred disastrous weather in northern China. The increasing occurrence frequency recently, especially the much more frequently occurred sandstorms with high intensity in th
Domestic and international literatures in economic geography in recent years showthat the disciplinary status of regional economic geography remains steay. Domesticliteratures prefer regional comprehe