黄土丘陵区集流整地造林技术研究

Study on Technique of Land Preparation to Collect Rainwater Runoff in Loess Hilly and Gully Region

在黄土丘陵区两个不同的半干旱气候类型区,研究了四种常用的整地方法,以及在采用不同集流整地规格时,植树穴附近土壤水分变化规律及对该区几种常用造林树种的幼龄、成龄林生长发育的影响。从而得出适宜的集流整地规格和不同树种,用作不同目的时所需的集流面积,为该区抗旱造林提供科学依据。

Under two different types of climate in loess hilly and gully region,following three aspects were studied, namely(1) four general land preparation methods applied to different scale, (2)Soil water moving patern nearby tree plantinghole when different scale of rainwater runoff collecting method adapted,and (3)effect of the technique on both youngand old aforestation tree species growth. Results supplied both the suit size or scalp for land preparation to collect rain-water runoff and required areas to collect in case of different purpose. The results also provided scientificinformation todrought-resisting aforestation in the region.