半干旱退化草牧场造林立地类型划分、评价与适地适树研究

采用定量和定性相结合的方法对内蒙古自治区赤峰市巴林右旗中南及东南部无林地进行了立地基层分类,划分出4个立地类型小区、15个立地类型组和35个立地类型。采用土壤物理因素、化学因素和生物因素17个因子的评价指标和各立地类型的土壤生产力进行了综合评价,划分出优、良、可、劣4个等级,并通过对调查区各立地类型的宜林性和限制性分析,根据当地自然条件特点和生物学特性确定了各立地类型的造林类型和造林适宜林种。

Studies on division, assessment,suitable land and tree of afforestation site type in semi-dry deteriorated grass farm

Using the methods of quantitative and qualitative analyses, the site basis classification of no forest land in the mid-south and southeast parts of Bairin Right Banner in Inner Mongolia Autonomous Region was accomplished. 4 site type pots, 15 site type groups and 35 site types were divided. Adopting the assessment indexes including 17 factors such as physical, chemical and biological factors, soil productive force was appraised, and it was divided into four grades including excellent, good, passable and poor grade. Based on the local natural characteristic and biological feature, the type and the suitable tree species of afforestation were determined.