Due to fewer rainfall, lean soil, serious soil and water loss and the long term negative effect of human activity, the ecological environment in hilly semi arid area is being degraded.
低山丘陵半干旱区气候干旱、土地贫瘠、水土流失严重，加上人类活动的长期负面影响，使得该地区生态环境不断恶化。
With ingravescent fresh water scarcity, the situation of drought and soil salinity get even worse in the arid and semi-arid areas of China.
在我国由于水资源日益短缺，干旱半干旱地区土壤干旱和盐渍化问题越发严峻。
In comparison with barren slope, a pilot study of hydrology effect of artificial woodland surface soil in semi-arid low mountainous upland region of western Liaoning province was carried out.
以荒山为对照，对辽西半干旱低山丘陵区人工林地表层土壤水文效应进行了初步研究。
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