| 汉江上游谷地黄褐土粒度组成特征及其意义 |
| |
| 引用本文： | 王朝建,庞奖励,黄春长,查小春,周亚利.汉江上游谷地黄褐土粒度组成特征及其意义[J].陕西师范大学学报,2012(3):76-80. |
| |
| 作者姓名： | 王朝建 庞奖励 黄春长 查小春 周亚利 |
| |
| 作者单位： | 陕西师范大学旅游与环境学院 |
| |
| 基金项目： | 国家自然科学基金重点资助项目(41030637);教育部博士点基金优先发展领域项目(20110202130002);中央高校基本科研业务费专项资金项目(GK200901007,GK200902020) |
| |
| 摘 要： | 对汉江上游谷地河流一级阶地上黄褐土的粒度组成进行了分析.结果显示:剖面下部黄土的粒度参数数值(σ=1.72,Kg=1.03,S=1.15)和粒度分布曲线与古土壤的参数(σ=1.73,Kg=1.03,S=1.15)和曲线一致,而与区内典型洪水滞流沉积物洪水SWD(σ=1.9,Kg=1.10,S=1.20)不同;在粒度成分三角图中,黄土和古土壤集中落在小的区域内,而洪水SWD呈分散分布;黄土的Y值均小于—2.741 1,而洪水SWD大多数样品Y值大于—2.741 1.这证明汉江上游谷地古土壤S0继承了黄土的基本特征,两者具有风成堆积物的特性.与渭河谷地典型黄土对比,汉江上游谷地的黄土粒度与其十分相似,说明二者具有同源性.
|
| 关 键 词： | 汉江黄土 风成黄土 粒度 |
The grain construction of the yellow cinnamon soil and its significance in the upper reaches of Hanjiang valley |
| |
| WANG Chao-jian,PANG Jiang-li,HUANG Chun-chang,ZHA Xiao-chun,ZHOU Ya-li.The grain construction of the yellow cinnamon soil and its significance in the upper reaches of Hanjiang valley[J].Journal of Shaanxi Normal University: Nat Sci Ed,2012(3):76-80. |
| |
| Authors: | WANG Chao-jian PANG Jiang-li HUANG Chun-chang ZHA Xiao-chun ZHOU Ya-li |
| |
| Institution: | (College of Tourism and Environment, Shaanxi Normal University,Xi′an 710062,Shaanxi,China) |
| |
| Abstract: | The grain-size construction of the "loess-like material" of the fist terrace,upper reaches of Hanjiang valley was analyzed.The results reveal that the grain parameters(σ=1.72,Kg=1.03,S=1.15) and the frequency curve of the loess are similar to paleosol(σ=1.73,Kg=1.03,S=1.15),but different with the flood SWD(σ=1.9,Kg=1.10,S=1.20).In the triangle,the loess and the paleosol concentrate in a small area,but the flood SWD is discrete distribution.Y values of the loess are smaller than —2.741 1,and the flood SWD are above —2.741 1.These certify that the paleosol inherit the basic feature of the loess,both are eolian.Contrasted with the loess of Weihe valley,quite similar,that indicate the homology. |
| |
| Keywords: | Hanjiang loess Eolian loess grain-size |
| 本文献已被 CNKI 等数据库收录！ |
|
