Soil Anti-scouring Ability of Typical Forestlands in the Mountainous Area of Beijing
Thirty-three samples scoured from undisturbed soil were tested and analyzed to reveal soil anti-scouring ability in different flows of eight typical forestlands along the mountainous area of Beijing. The results are as follows: l) Soil anti-scour values were lowest at the initial stage of the anti scour process. The values then increased significantly with the change of the wave formed in terms of the gradual increase in wavelength and height. There were also abrupt changes noted in the soil anti-scouring process for all soil samples. 2) Under a uniform flow rate, soil anti-scour ability among forestlands were represented as: mixed wood was strongest, followed by broadleaved mixed forest, pure broadleaved forest, and pure needles forest. It also connected with stand age and cover concretely. 3) Accumulated sediment yield escalated with increased flow rate and time for all soil samples. The accumulated sediment yield curves of pure needles forest, pure broadleaved forest, mixed wood, and broadleaved mixed forest inflected at 70, 50, 90, and 120 s, respectively the values of which stabilized later on.
forestland soil anti-scour value sediment yield mountainous area of Beijing
Jiangkun Zheng Xinxiao Yu Guodong Jia Qingyun Li Jin Chen Xiongbin Wang
School of Soil and Water Conservation, Beijing Forestry University, Beijing, 100083, China
国际会议
西安
英文
703-707
2010-10-11（万方平台首次上网日期，不代表论文的发表时间）