黄土高原草地土壤化学元素的特征与生态环境  

The Characteristic of Grassland Soil Chemical Element and Ecological Environment in the Loess Plateau

作　　者：贾恒义[1] 程浦海[1] 雍绍萍 穆兴民[1] 程积民[1] 彭祥林 

机构地区：[1]中国科学院水利部水土保持研究所

出　　处：《水土保持学报》1995年第4期84-93,共10页Journal of Soil and Water Conservation

基　　金：属中国科学院院长基金

摘　　要：研究了黄土高原草地土壤化学元素的含量；剖面分布特征与生态环境的关系，初步认为：①黄土高原草地土壤化学元素含量基本是黑垆土，褐土＞黄绵土；②剖面分布特征以黑垆土最为典型，除Ｂａ，Ｓｒ元素外，基本为指数回归。它不仅反映了黄土高原草原植被下黑垆土成壤过程中腐殖质迭加增厚，而且也反映了化学元素迁移富集与再分配。化学元素的含量与有机质含量息息相关。黄绵土化学元素含量与剖面分布基本上是本区侵蚀土壤的特点；③按化学元素可分为两大类：一是Ｂａ，Ｓｒ，二是除Ｂａ，Ｓｒ以外的化学元素为一类，它含有Ｍｏ，Ｓｍ，Ｃｕ，Ｚｎ，Ｐ．Ｂ．ｋｅｘ（速效Ｋ），Ｋｎｅｘ（缓效Ｋ），Ｃｅ，Ｎ，Ｍｎ，Ｆｅ，Ｙ，Ｎｄ和Ｌａ。The present paper deals with the ralations between the chemical element content,itsdistrabution characteristic in grassland soil profile and ecological environment on the loessplateau. The following prelimnary points obtained.1.The chemical content of the grassland soil basically is Heilu soil,cinnamon soils>loessalsoils on the loess plateau. 2.The profile distrabutoin characteristic of the grassland soils chemical element utilize Heilusoils is the most typical cases. Except fom Ba,Sr,bisicall is with exponentae equation. It reflect-ed not onty humus horizon occus repeatedly and increase,but also refected remove, plentiful andonce more distribute on the foming soil process fom the Heilu soils of the grasslands vegetation inthe loess plateau. the element and ogganic matter content has a intently interrelate. The elementcontent and profile distrabution of the loessal soils is the charateristic of the erosion soils in theloess plateau.3.The element of grassland soils divided into two typew:the first type is Ba,Sr;the secondtype is Mo,Sm Cu,Zn,P,Kex,Knex,Ce,N,Mn,Fe,Nd,La.

关 键 词：草地土壤 生态环境 化学元素 黄土高原 

分 类 号：S812.2[农业科学—草业科学]