黄土高原不同林型下土壤肥力与材积的关系  

Relationship Between Soil Fertility and Timber Volume in Different Forest Types in Loess Plateau

作　　者：李香兰[1] 程积民[1] 王淑芝[1] 

机构地区：[1]中国科学院,水利部西北水土保持研究所,陕西杨陵712100

出　　处：《水土保持学报》1992年第4期69-73,共5页Journal of Soil and Water Conservation

基　　金：国家自然科学基金

摘　　要：通过子午岭和六盘山两林区6种林型的枯枝落叶层、土壤生物化学、化学、物理学特性,有效态养分与树木材积测定后,用模糊评分及相对系数法对单因子进行分析,又用几何平均值法得出:子午岭林区辽东栎林地土壤自肥能力最优,材积最大,山杨林次之。六盘山林区山杨林地土壤自肥能力最优,材积最大,山杨林次之。两林区统一进行比较,辽东栎居首,山杨居二。研究结果,为在黄土高原搞好水土保持寻求自肥能力强的树种提供了科学依据。After determining litter, the features of soil biochemistry, chemistry and physics, available nutrient and timber volume,every factor is analysed by vague evaluation and correlative coefficient methods. The results obtained with geometrical mean value method is as follows: in Ziwuling forest area, soil fertility of Q. liaotungensis Koidz. forest land is the best, the volume is the biggest, P. davidiana Dode forest secondly;in liupanshan forest area,soil fertility of P. davidiana Dode forest land is the best, the volume is the biggest, Q. liaotungensis Koidz. forest secondly. Making comprehensive comparison for two forest areas, Q. liaotungensis Koidz. is the first, P. davidiana Dode is the second. Finally, this paper provides a scientificai base to conserve soil and water, and to search for tree species with high soil fertility.

关 键 词：材积 土壤肥力 

分 类 号：S714.8[农业科学—林学]