Soil erosion is a result of comprehensive effect of geographical environment factors.
土壤侵蚀是地理环境各因子综合作用的结果。
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。
The environment factors, such as gradient, aspect and position of the slope, had effect to some extent on soil nutrient.
坡度、坡向、坡位等环境因子对土壤养分有一定的影响。
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