封育条件下科尔沁沙地小叶锦鸡儿(Caragana microphylla)群落改良土壤效应的研究

The effects of enclosing on the improving of soil properities of Caragana microphylla community in Horqin sand land

封育措施是恢复植被、改良土壤性质的重要措施。文中以科尔沁沙地小叶锦鸡儿群落为研究对象,主要研究不同封育年限的沙地小叶锦鸡儿群落对土壤养分、土壤含水量、土壤紧实度、微生物生物量C、N、P含量等土壤性质的改良作用。结果表明,封育措施可以从土壤养分、土壤水分、土壤紧实度和土壤微生物等方面全面改良土壤,尤其是对表层土壤(0-10cm)的改良效果尤其明显。

Enclosing was considered as an important method to restore vegetation and to improve soil properties.We evaluated the effects of enclosing,of 12 years or 6 years on the improvement of soil properties in the Caragana microphylla community of Horqin sand land.The soil properties analyzed in this paper included soil nutrients,soil compactness,soil moisture and microbial biomass of C,N and P.It was found that enclosing could reduce the soil compactness and improve properities of the surface layer soil effectively.