河谷盆地

自然环境、人文因素演变与城市聚落发展的关系&以兰州河谷盆地为例

On relation between evolution of natural environment and human factor and development of urban settlement

结果表明：澜沧江干流河谷盆地气温和降水总体上有自南部向北部递减的趋势，即南部的气温比北部高，降水比北部多。

The results show that , air temperature and rainfall are higher in the south region than in the north region .

1949年以来中国城市居住区空间演变与机制研究&以河谷盆地型城市兰州为例

Study on spatial evolvement and mechanism of urban residential district in China since 1949 & a case study of the valley-basin city : lanzhou

利用兰州河谷盆地城乡过渡区边界层观测资料，分析了该地区的温度平流和边界层特征。

Using the observational data over transition zone between urban and rural areas in the basin of the Yellow River ( Lanzhou ) valley , the characteristics of boundary layer and the heat advection were analyzed .

兰州的石油化工产业以及燃煤排放的污染物中含有较多的多环芳烃，而兰州市特殊的狭长河谷盆地地理环境，污染物很难通过自然扩散消除，尤其是冬季的污染更加严重。

Contaminants discharged by petrochemicals industry and coal-burning in Lanzhou contain much Polycyclic Aromatic Hydrocarbons ( PAHs ), but they are hardly eliminated by natural diffuse process because of special geographic environment of a narrow and long river valley basin which makes the pollution more serious especially in winter .

金沙江干热河谷元谋盆地冲沟沟头形态学特征研究

Study on the Morphological Characteristics of the Gully Heads in Yuanmou Basin , Arid River Valley of Jinsha River , China