摘要
研究喀斯特地区原状土的可蚀性,有助于掌握土壤抗蚀的本底特征,对比研究耕作前后的土壤可蚀性变化,揭示人类加速侵蚀对石漠化过程的影响。通过对喀斯特地区原状土壤剖面的调查,分析土壤质地、有机质含量,选用Sharply等的EPIC模型,计算土壤可蚀性K值。结果表明：喀斯特地区原状土壤可蚀性K值集中在0.2-0.3之间,平均为0.269,比其他常见土壤的K值低。研究结果可用于与耕作土K值进行对比研究。
To study the erodibility of original soil anti-erodibility and comparing the differences of which will reflect the human being＇s influences in Karst area is useful for mastering the natural characters of erodibility between cultivated land and uncultivated land, on rocky desertification by accelerative erosion. Based on investigating of original soil sections, sampling and analyzing of soil texture and organic content in Karst area, the erodibility value K of soil has been calculated according to EPIC model （Sharply etc, ）. The results indi cated that the erodibility value K of original soil in Karst area is between 0.2 and 0.3 and that the average value is 0. 269, which is lower than other kinds of soil. The results could be used for comparing study on cultivated lands.
出处
《中国水土保持科学》
CSCD
2007年第5期1-4,共4页
Science of Soil and Water Conservation
基金
中国科学院知识创新工程重要方向项目"中国水土流失现状
趋势与对策研究"(KZCX3-SW-448)
国家科技部"陡坡耕地退耕还林还草及生态农业技术与示范"(20010-A606A-9-04)
