朝阳县小流域坡面土壤侵蚀状况与土壤磁化率空间分异特征分析  

Differentiation Characteristics Analysis of Soil Erosion and Spatial Differentiation of Soil Magnetic Susceptibility in Small Watershed of Chaoyang County

作　　者：王万香 WANG Wan-xiang(Chaoyang County Soil and Water Conservation Bureau,Chaoyang 122000,China)

机构地区：[1]朝阳县水土保持局,辽宁朝阳122000

出　　处：《黑龙江水利科技》2020年第5期5-10,共6页Heilongjiang Hydraulic Science and Technology

摘　　要：文章选取朝阳县单家店和六家子小流域为例,确定了小流域水土流失强度与土壤磁性之间的关系,系统分析了二者的空间分异特征。研究表明:土壤磁化率在坡面空间尺度上总体呈上部低于底部的趋势,自山顶往西呈波状变化特征;土壤本身抗蚀性差异和坡面土壤发育母质不同,为造成小流域土壤侵蚀差异的主要因素。侵蚀强度与土壤磁化率之间存在负相关性,区域侵蚀强度的空间分异特征能够利用不同空间部位的磁化率大小来描述。侵蚀强度的空间分异特征可利用不同空间部位的磁化率反映。Taking Danjiadian and Liujiazi small watersheds in Chaoyang County as examples, the relationship between soil erosion intensity and soil magnetism in small watersheds was determined, and the spatial differentiation characteristics of them were analyzed systematically. The results showed that the soil magnetic susceptibility was lower in the upper part than in the bottom in the spatial scale of the slope, and was wavy from the top of the mountain to the West. The difference of soil erosion resistance and the parent material of the slope soil development were the main factors causing the difference of soil erosion in the small watershed. There is a negative correlation between erosion intensity and soil magnetic susceptibility. The spatial differentiation of regional erosion intensity can be described by the magnetic susceptibility of different spatial parts. The spatial differentiation of erosion intensity can be reflected by the magnetic susceptibility of different spatial parts.

关 键 词：磁化率 土壤侵蚀 分异特征 小流域 

分 类 号：S157.1[农业科学—土壤学]