摘要
黄土区内的次生林,在维持黄土区生态环境中起着十分重要的保持水土和涵养水源的作用。但是,黄土区次生林下的土壤理化特性以及土壤发生发育的研究尚少。为此,我们对上述问题进行了初步探讨,可望为人工林、次生林的经营管理提供科学依据。
This paper presents studied the water—physical and chemical charater and the soil nutrient of forest soil in loess region. The results obtained are summarized as follows:
The water—physical charater of follen leaves and humus horizon of forest soil are; volume weight lower, noncapillary porosity development, capillary porosity nondevelopment and content of saturaed water higher, these charater all advantaged admit precipitation, conservative water and soil and avoid flow-off.
The chemical charater of forest soil are: lower pH, content of calcium carbonate reduced in follen leaves and humus horizon; organic matter, total nitrogen and total phosphate in accordance with index equation(Y=) in distrebution of porofile. But total potassium accordance with index equation (Y=).
The available nitrogen, phosphate and potassium of lower with increase of depth.
出处
《林业科学》
EI
CAS
CSCD
北大核心
1990年第1期74-79,共6页
Scientia Silvae Sinicae
