摘要
对紫色丘陵区土壤侵蚀链不同地形部位的紫色土壤进行了采样和分析,研究发现,紫色丘陵区土壤侵蚀链中土壤性质随地形呈规律性变化特征,与冲刷剥离、搬运扩散及掩埋沉积作用的强度有关。该区坡顶、坡中土壤由于冲刷剥离、搬运扩散作用强烈,加之农耕改造作用,理化性质恶化,因此不适于农用;而坡脚掩埋沉积作用占主导作用,农用后仍可保持良好的土壤性质,适于农业利用。
The samples of purple soil came from different landform characteristics of the soil eroive chain in purple hilly region were analysed. The results showed that the basie soil feature in soil erosive ehain varied according to landform eharaeteristics in purple hilly region and related to the intensity of the washing and denudation, transiting and diffusing and sediment and burying. As the intensive washing and denudation, transiting and diffusing, as well as the human tilth, the tilth was not suitable in top and middle slope based on worse soil physical and ehemieal properties, but the sediment and bury were primarily in the bottom slope and the tilth was suitable because of the well soil basle feature even if the tilth was condueted.
出处
《西南农业学报》
CSCD
2006年第2期200-205,共6页
Southwest China Journal of Agricultural Sciences
基金
国家自然科学基金(40025103)
中国科学院知识创新工程项目(KZCX3-SW-330)
关键词
紫色丘陵区
土壤侵蚀链
地形
土壤基本性质
purple hilly region
soil erosive chain
landform
basic soil feature
