中文摘要：

黄土高原区域是我国占地面积较大的一种干旱、半干旱地貌特征,其植被景观功能关系到整个区域的可持续发展。文章以甘肃环县为例,对黄土高原干旱区32个典型样地进行植被群落调查。通过样方数据和土壤肥力指标的分析、景观功能评价（LFA法）,诠释了植被群落与不同立地条件土壤结构、水分渗透、养分循环特征关系,依据植被抗旱性和节水性对植被进行配置,将环县植被恢复划分为保持区、改良区、修复区和重建区4个分区。针对环县的＂修复区＂和＂重建区＂,从＂植物选择—植被配置—立地选择—LFA评价＂着手,结合农林牧等产业发展情况,提出6种针对不同立地类型的恢复模式。

英文摘要：

The Loess Plateau region is a largest area with the feature of arid and semi-arid landforms in China. Its vegetation landscape function is key to the sustainable development of the whole region. Taking Huan County,Gansu,as an example, the 32 typical vegetation communities were investigated in arid region of the Loess Plateau.Relationship between vegetation communities and the soil structure,water infiltration,nutrient cycling in different soil site conditions was interpreted by analyzing quadrat data,soil fertility index and landscape function index. According to drought resistance and water conservation of vegetation, vegetation restoration was divided into four areas：preservation area,improvement area,rehabilitation area and reconstruction area. The pattern of ＂ plant selection-vegetation allocation- site selection- landscape function analysis ＂ was adopted for the rehabilitation area and reconstruction area in this county,and six restoration models for different site types were put forward in combination with the development of agriculture,forestry,husbandry and other industries.