北大河
北大河-
研究结果表明：1.从时空分布格局看，黑河流域的绿洲主要分布在黑河、北大河及其支流两侧，且沿河流和干渠两岸向外扩张。
The result shows that : Firstly , in view of time and space distribution pattern , the oasis of the Heihe River Basin mainly distributed in Heihe River and its tributaries , Peking University on both sides , and along the river flows and cross-strait outward expansion .