黄土丘陵区人工林土壤养分效应研究  

The Characteristics of Soil Nutrient in Artificial Forest Land in the Hilly Loess Plateau

作　　者：尹娜[1] 魏天兴[1] 张晓娟[1] 

机构地区：[1]北京林业大学水土保持学院,北京100083

出　　处：《水土保持研究》2008年第2期209-211,214,共4页Research of Soil and Water Conservation

基　　金："十一五"科技支撑计划(2006BAD03A1206);山西吉县森林生态系统国家科学观测研究站项目

摘　　要：以人工油松林和人工刺槐林为例进行比较,分析了黄土丘陵区人工林土壤养分特征及分布,进行了人工林土壤养分效应的研究。结果表明:该研究区人工林土壤肥力处于低水平;人工林表层土壤养分中有机质和全磷的空间变异性较大;各种养分在剖面中的含量具有明显的层次性,表层(0—20 cm)养分含量最高,向下层逐渐降低;在人工刺槐林中,土壤有机质含量与全氮含量相关性显著,有机质含量与全磷含量、速效钾含量相关性较为显著,与速效磷含量相关性不显著;在人工油松林中,土壤有机质含量与全氮含量相关性显著,有机质含量与速效磷含量、速效钾含量相关性较为显著,与全磷含量相关性不显著。The article is making the comparisons with the artificial Pinus tabulaeformis forest and the artificial Robinia pseudoacacia forest,analyzing the physical and chemical properties of the plantation soil in the Loess Hills Area,making the research about the effect of the plantation soil nutrients. The results showed that：generally speaking, the planted forest soil fertility is in low level in this study area. In the planted forest super crust soil nutrient, the space deviancy of the organic quality and the entire nitrogen is bigger. The contents of various nutrients in section have obvious arrangement of ideas, the nutrient content in super crust （0-20 cm） is maximal, reduce gradually to lower levels; In the artificial robinia pseudoacacia forest, the correlativity of the soil organic contents and the soil nitrogen contents is notable. The correlativity of the organic contents and the entire phosphorus contents is comparatively notable, the correlativity of the organic contents and the quick results potassium contents is comparatively notable. The correlativity of the organic contents and the available phosphorus contents is not notable; In the artificial Pinus tabulaeformis forest, the correlativity of the soil organic contents and the soil nitrogen contents is notable, the correlativity of the organic contents and the available phosphorus contents is comparatively notable,the correlativity of the organic contents and the quick results potassium contents is comparatively notable. The correlativity of the organic contents and the entire phosphorus contents is not notable.

关 键 词：土壤养分 人工林 黄土丘陵区 

分 类 号：S714.8[农业科学—林学]