The causes of land degradation not only include the natural factors, such as the characteristics of land resources and the natural environment, but also the social and economic factors.
产生土地退化的原因，不仅仅是土地资源特点与自然环境这样一些自然因素，还包括一些社会与经济因素。
Enlivening mechanism of mountain land circulation and spreading moderate scale management of forestry are determined by the present social environment and forestry own characteristics.
搞活山地流转机制，推行林业适度规模经营，是由当前社会大环境和林业自身的特点所决定的。
It puts fundamental influences on demographics, families, nature, and social environment, which in turn results in the differences of peasants attitude towards Land Tenure System.
在人口、家庭、自然、社会各种不同条件的影响下，农民形成了对现阶段农地制度不同的态度。
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