天然次生白桦林土壤营养元素含量动态特性的研究  

STUDY ON THE PROPERTY OF THE NUTRIENT ELEMENTS CONTENTS IN SOIL IN NATURAL SECONDARY BIRCH STAND

作　　者：张成林 周晓峰[2] 吴昊[3] 魏利 

机构地区：[1]黑龙江省林学院 [2]东北林业大学 [3]哈尔滨市环保局 [4]大兴安岭林管局营林局

出　　处：《林业科技》1993年第1期16-20,共5页Forestry Science & Technology

摘　　要：本文以东北东部山区重要主态系统之一的天然次生白桦林为研究对象,在研究土壤中9种营养元素静态含量的基础上,对其含量动态变化进行了较为详尽的分析讨论。结果表明:(1)土壤各层中,除Cu元素含量外,其它8种营养元素全量含量、6种营养元素速(有)效含量、有机质含量和PH值的变动幅度均以0—20cm土中为最大;(2)土壤0—20cm层次,有机质含量的变动规律与PH值、全量N、速效N、速效P、有效Zn含量动态变化规律基本一致,具有较高的正相关。相关系数均达0.88以上。Based on the determination of the nutrient element content in different soil horizon of the natural secondaiy birch stand, the dynamic property of the nutrient element content of the stand was studied during the growing season in 1989. The result shows: (1) the contents of N、P、K、Ca、Mg、Zn, Mn, Fe elemet, organic matter and PH value in 0-20cm soil horizon is the highest than that in other soil horizons; (2) in 0-20cm soil horizon, the change of organic matter contents were just like that of all-nitrogen, and nitrogen potassium and zinc of qnik-acting, and highest correlation, the cofficients of correlation were higher than 0.88.

关 键 词：白桦 土壤肥力 天然林 

分 类 号：S792.153[农业科学—林木遗传育种]