Hippophae rhamnoide is a nicer shrub species for plantation becoming savageness. This population could renew very well in Hilly-gully region of Loess plateau.

研究结论如下： 沙棘是一个良好的人工林天然化灌木物种，在黄土丘陵区该种群更新良好。

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The characteristics of soil aggregates fractal dimension and its responses to vegetation rehabilitation were studied in the Hilly-gully region of Loess Plateau.

采用计算分形维数的方法，对黄土丘陵区典型草原带土壤团聚体的分形特征及其对植被恢复的响应进行研究。

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Based on the investigation of rural social economy in typical watershed with oil exploiting in loess hilly-gully region, the effect of oil exploitation on social economy was analyzed.

文章基于黄土丘陵区油田开发典型流域社会经济调查，探讨了石油开发对当地农村社会经济的影响。

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