The thalweg in loess hill area is an important terrain structural line, reflecting topography and landform character.
黄土丘陵区的沟沿线，是反映该区地形地貌特征的重要的地形结构线。
As a key factor, water is critical for restoration and rehabilitation of vegetation in the hill area of Loess Plateau.
而该地区的年平均降水量较少，水分作为关键性因子严重地制约着黄土高原丘陵区植被的恢复与重建。
These provide some theoretical bases for managing comprehensively Loess Low Hill area.
为黄土低山丘陵区的综合治理提供根据。
Two stratigraphic units belonging to Cenozoic Group have. been found between the Permian System and the Quarternary Loess from Xiangshan hill terrain in Hancheng Mining Area.
在韩城矿区象山山地，于二叠系之上，第四系黄土之下，发现了两套属于新生界的地层单位。
Two stratigraphic units belonging to Cenozoic Group have. been found between the Permian System and the Quarternary Loess from Xiangshan hill terrain in Hancheng Mining Area.
在韩城矿区象山山地，于二叠系之上，第四系黄土之下，发现了两套属于新生界的地层单位。
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