农牧交错区地表土壤风蚀物垂直分布规律研究  

The Vertical Distribution Laws of Wind Erosion Matter over Land Surfaces in the Cross Region between Farmland and Grassland

作　　者：陈智[1] 麻硕士[1] 范贵生[1] 赵永来[1] 

机构地区：[1]内蒙古农业大学机电工程学院,呼和浩特010018

出　　处：《农机化研究》2007年第4期102-105,共4页Journal of Agricultural Mechanization Research

基　　金：国家自然科学基金项目(30260092);内蒙古自治区科技攻关项目(20030703)

摘　　要：利用移动式风蚀风洞对阴山北麓农牧交错区无退化草地、退化草地、传统耕作农田和保护性耕作农田等4种典型地表土壤的抗风蚀能力进行了原位测试研究,探讨了4种典型地表土壤风蚀物的垂直分布规律。研究表明,4种典型地表土壤风蚀量在高度上的分布具有一定规律。其中,无退化草地、退化草地和传统耕作农田地表土壤风蚀量随高度的变化遵循指数规律;而保护性耕作农田土壤风蚀量随高度的变化呈明显的随机性特征。由于直立残茬和植被覆盖的共同作用结果,风洞集沙仪收集的保护性耕作农田最大土壤风蚀量集中在距地表18～40cm的高度范围内。This paper studied the anti-wind erosion capabilities of four kinds of typical soil surfaces： nondegenerated grassland, degenerated grassland, traditional tillage farmland and conservation tillage farmland, and investigated the vertical distributions laws of wind erosion matter over land surfaces on 4 kinds of typical soil surfaces. The results showed that the variation of soil wind erosion amount have a certain regulation with height for four typical soil surfaces. The soil wind erosion amounts for non-degenerated grassland, degenerated grassland and traditional tillage farmland that change with height by following the exponential function law. And it also amounts for conservation tillage farmland changes with height by appearing random characteristics. As the result of the co-action of the erect stubble and vegetation cover, The position that the maximum soil wind erosion amount for conservation tillage farmland measured by sand sampler located in the height range of 18-40cm.

关 键 词：土壤学 土壤风蚀 试验研究 农牧交错区 典型地表 

分 类 号：S157.4[农业科学—土壤学]