Publication date: 15 November 2017
Source:Geoderma, Volume 306
Author(s): Lunjiang Wang, Guanghui Zhang, Liangjun Zhu, Hao Wang
Roughness significantly affects the hydrological and erosion processes in arid and semi-arid areas where biological soil crusts (biocrusts) are ubiquitous. Biocrusts influence roughness by the presence of the organisms and their swelling due to the wetting effect. However, the potential effects of biocrust coverage and wetting patterns on swelling induced roughness are elusive. This study aimed to determine the effects of biocrust type, coverage, and wetting patterns on wetting induced roughness (WIR) and to quantify the change process of WIR after wetting. Samples of cyanobacteria and moss with coverages categorized in five different classes were collected. High-resolution laser system samples were used to obtain measurements. The results showed that the mean swelling heights of cyanobacteria and moss were 0.068
Source:Geoderma, Volume 306
Author(s): Lunjiang Wang, Guanghui Zhang, Liangjun Zhu, Hao Wang