Effects of layer thickness on desiccation cracking behaviour of a vegetated soil
The objective of this study is to explore how different layer thicknesses affect the desiccation cracking behaviour of vegetated soil. During the experiment, an electronic balance was employed to quantify water evaporation, while a digital camera was utilized to capture the initiation and progressio...
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2024-06-01
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| Series: | Biogeotechnics |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2949929123000682 |
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| author | Congying Li Qing Cheng Chaosheng Tang Yingdong Gu Lingxin Cui Haowen Guo |
| author_facet | Congying Li Qing Cheng Chaosheng Tang Yingdong Gu Lingxin Cui Haowen Guo |
| author_sort | Congying Li |
| collection | DOAJ |
| description | The objective of this study is to explore how different layer thicknesses affect the desiccation cracking behaviour of vegetated soil. During the experiment, an electronic balance was employed to quantify water evaporation, while a digital camera was utilized to capture the initiation and progression of soil surface cracking. Results indicate that in the early drying process, the rate of evapotranspiration in vegetated soil correlates positively with leaf biomass. For soil samples with the same layer thickness, the constant rate stage duration is consistently shorter in vegetated soil samples than in their bare soil counterparts. As the layer thickness increases, both vegetated and bare soil samples crack at higher water content. However, vegetated soil samples crack at lower water content than their bare soil counterparts. Vegetation significantly reduces the soil surface crack ratio and improves the soil crack resistance. The crack reduction ratio is positively correlated with both root weight and length density. In thicker vegetated soil layers, the final surface crack length noticeably declines. |
| format | Article |
| id | doaj-art-36cc964032f84bcea088fca1e4f089bb |
| institution | DOAJ |
| issn | 2949-9291 |
| language | English |
| publishDate | 2024-06-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Biogeotechnics |
| spelling | doaj-art-36cc964032f84bcea088fca1e4f089bb2025-08-20T03:21:16ZengKeAi Communications Co., Ltd.Biogeotechnics2949-92912024-06-012210006810.1016/j.bgtech.2023.100068Effects of layer thickness on desiccation cracking behaviour of a vegetated soilCongying Li0Qing Cheng1Chaosheng Tang2Yingdong Gu3Lingxin Cui4Haowen Guo5School of Earth Sciences and Engineering, Nanjing University, Nanjing 210023, ChinaSchool of Earth Sciences and Engineering, Nanjing University, Nanjing 210023, China; Corresponding author.School of Earth Sciences and Engineering, Nanjing University, Nanjing 210023, ChinaSchool of Earth Sciences and Engineering, Nanjing University, Nanjing 210023, ChinaSchool of Earth Sciences and Engineering, Nanjing University, Nanjing 210023, ChinaDepartment of Civil and Environmental Engineering, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, ChinaThe objective of this study is to explore how different layer thicknesses affect the desiccation cracking behaviour of vegetated soil. During the experiment, an electronic balance was employed to quantify water evaporation, while a digital camera was utilized to capture the initiation and progression of soil surface cracking. Results indicate that in the early drying process, the rate of evapotranspiration in vegetated soil correlates positively with leaf biomass. For soil samples with the same layer thickness, the constant rate stage duration is consistently shorter in vegetated soil samples than in their bare soil counterparts. As the layer thickness increases, both vegetated and bare soil samples crack at higher water content. However, vegetated soil samples crack at lower water content than their bare soil counterparts. Vegetation significantly reduces the soil surface crack ratio and improves the soil crack resistance. The crack reduction ratio is positively correlated with both root weight and length density. In thicker vegetated soil layers, the final surface crack length noticeably declines.http://www.sciencedirect.com/science/article/pii/S2949929123000682Desiccation crackVegetated soilLayer thicknessRoot density |
| spellingShingle | Congying Li Qing Cheng Chaosheng Tang Yingdong Gu Lingxin Cui Haowen Guo Effects of layer thickness on desiccation cracking behaviour of a vegetated soil Biogeotechnics Desiccation crack Vegetated soil Layer thickness Root density |
| title | Effects of layer thickness on desiccation cracking behaviour of a vegetated soil |
| title_full | Effects of layer thickness on desiccation cracking behaviour of a vegetated soil |
| title_fullStr | Effects of layer thickness on desiccation cracking behaviour of a vegetated soil |
| title_full_unstemmed | Effects of layer thickness on desiccation cracking behaviour of a vegetated soil |
| title_short | Effects of layer thickness on desiccation cracking behaviour of a vegetated soil |
| title_sort | effects of layer thickness on desiccation cracking behaviour of a vegetated soil |
| topic | Desiccation crack Vegetated soil Layer thickness Root density |
| url | http://www.sciencedirect.com/science/article/pii/S2949929123000682 |
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