四川农业大学学报 ›› 2010, Vol. 28 ›› Issue (04): 480-485.doi: 10.3969/j.issn.1000-2650.2010.04.017

• 研究论文 • 上一篇    下一篇

川中丘陵区紫色土坡耕地土壤侵蚀特征

杨占彪1, 朱波2, 林立金3, 杨远祥1, 朱雪梅1   

  1. 1. 四川农业大学资源环境学院, 四川 雅安 625014;
    2. 中国科学院成都山地灾害与环境研究所, 成都 610041;
    3. 雅安水土保持生态环境监测分站, 四川 雅安 625000
  • 收稿日期:2010-09-09 出版日期:2010-12-31 发布日期:2017-03-01
  • 通讯作者: 朱雪梅(E-mail:zhubroad@163.com) E-mail:zhubroad@163.com
  • 基金资助:
    国家科技支撑计划"川中丘陵区坡耕地整治和农林结构优化技术集成与示范"(2008BAD98B05)

Characteristics of Soil Erosion on Sloping Field in the Central Hilly Areas of Sichuan

YANG Zhan-biao1, ZHU Bo2, LIN Li-jin3, YANG Yuan-xiang1, ZHU Xue-mei1   

  1. 1. College of Resource and Environment, Sichuan Agricultural University, Yaan 625014, Sichuan, China;
    2. Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China;
    3. Yaan Soil and Water Conservation and Eco-environment Monitoring Station, Yaan 625000, Sichuan, China
  • Received:2010-09-09 Online:2010-12-31 Published:2017-03-01

摘要: 通过径流小区定位观测,研究了川中丘陵区坡耕地土壤侵蚀特征。结果表明,坡面径流量和土壤侵蚀量年际间存在差异;随着坡度的增加,坡面径流量和土壤侵蚀量呈增加的趋势。多元回归分析表明,降雨量与坡面径流深、土壤侵蚀量之间存在显著的线性关系;而降雨强度、降雨历时与土壤侵蚀量分别存在着显著的幂函数和二次函数关系。主成分分析表明,降雨量和降雨强度为坡耕地主要的土壤侵蚀因子,降雨历时对土壤侵蚀的贡献率随坡度的增加逐渐加强。

关键词: 川中丘陵区, 紫色土, 坡耕地, 土壤侵蚀

Abstract: The study was carried out to do research on the characteristics of soil erosion in sloping fields at the central hilly areas of Sichuan by observing the water and soil loss of runoff observation field.The results indicated that the runoff and soil erosion were different between different years.Runoff and soil erosion increased with the rise of slope.Multiple regression analysis showed that significant liner relationship existed between rainfall and runoff depth,soil erosion.However,the significant power and quadratic relationships were found between rainfall intensity and soil erosion,rainfall duration and soil erosion respectively.The principal component analysis manifested that rainfall and rainfall intensity were the major factors for soil erosion.The effect degree of rainfall duration on soil erosion was enhanced with the rise of slope.

Key words: central hilly areas of Sichuan, purple soil, sloping field, soil erosion

中图分类号: 

  • S157.1