【摘要】 <正> 为解决陇中半干旱黄土丘陵地区水土保持林草措施成活率低、保存率低、效益低的问题,我站选在具有代表性的定西县安家沟流域进行了植物对位配置试验研究。经过六年的工作,初步得出了具有一定应用价值的结论和措施对位配置方案,并在定西七县得到了较大面积推广。现将我们试验和推广的情况介绍于下。 一、在相同降水条件下,不同地形部位存在着不同的生境条件更多还原

【Abstract】 Experiment on the plant growth and micro-climate was conducted in a small watershed in semi-arid rolling mountainous area. The results indicated that in the same precipitation zone, different ecologic environments were formed in different topographic sites for redistribution of precipitation and differenc of micro-climate and led to a difference of growth and distribution of plant. Soil moisture and wind velocity etc. greatly influenced the growth and distribution of plant. According to this, the fitting disposition model of plantation in the comprehensive management of small watershed was drawn up. It had been extensively popularized in seven counties of Dingxi Prefecture and obvious benefits had been gained.更多还原