水土保持通报2012，Vol.32Issue(4)：32-35,47,5.
东北丘陵漫岗区坡耕地土壤抗蚀性研究
Anti-erodibility of Sloping Land Soil in Upland Region of Northeast China
摘要
Abstract
With indoor experiment and field test, soil physical and chemical properties, soil disintegration rate and related influential factors of sloping land were determined. The formula calculation method of EPIC （ero- sion productivity impact calculator） was applied to investigate the erodibility factor K of the soil in sloping lands in northeastern upland region of China. The results indicate that soil bulk density increased in an as- cending order of soil depth as 0--5 cm~20--25 cm~40--45 cm. The soil of lower slope had smaller bulk density than that of upper slope. Similarly, the soil from gentle slope（7~） had smaller bulk density than that from steeper slope（10~）. The organic matter contents showed an exactly opposite trend to bulk density. The median diameter of grain sizes did not show clear trend. The soil disintegration rates gradually increased with soil depth and correlated closely with soil bulk densities and organic matter contents., soil disintegration rate decreased with increase of organic matter content and decrease of soil bulk density. The soil from upper slope often had higher soil disintegration rate than that from lower slope, and the soil from gentle slope（7） had smaller soil disintegration rate than that from steeper slope（10）. The calculated soil erodibility K varied be- tween 0. 20 - 0. 40, indicating weak anti-erodibility. Therefore, water and soil conservation should be strengthened in the research area.关键词
丘陵漫岗区/坡耕地/崩解速率/抗蚀性Key words
upland region/sloping land/soil disintegration rate/soil anti-erodibility分类
农业科技引用本文复制引用
许晓鸿,隋媛媛,张瑜,王永丰,刘明义..东北丘陵漫岗区坡耕地土壤抗蚀性研究[J].水土保持通报,2012,32(4):32-35,47,5.基金项目
水利部公益性行业科研专项经费项目“黑土区坡耕地水土流失治理技术集成与示范” （）
吉林省科技发展计划重点项目“第二松花江流域坡耕地水土流失治理技术集成与示范” （）
