Knowledge Resource Center for Ecological Environment in Arid Area
| 项目编号 | 41301282 |
| 融合地表参数与风场模拟的草地景观系统风蚀定量评价：以锡林郭勒草原为例 | |
| 张卓栋 | |
| 主持机构 | 北京师范大学 |
| 开始日期 | 2014 |
| 结束日期 | 2016 |
| 资助经费 | 250000(CNY) |
| 项目类别 | 青年科学基金项目 |
| 资助机构 | CN-NSFC（国家自然科学基金） |
| 语种 | 中文 |
| 国家 | 中国 |
| 英文简介 | In order to get deeper understanding on wind erosion at landscape scale in the Xilingele grassland, overlay analysis based on Geographical Information System (GIS) is employed to identify the wind erosion units and their spatial pattern in the Xilingele grassland, and wind velocities, wind directions, dust transport and deposition are monitored at field in different wind erosion units of the landscape system. Surface soil samples and undisturbed soil samples are collected in each wind erosion unit. Soil physical and chemical properties are measured in laboratory, and soil erodibility of each wind erosion unit is calculated. Threshold wind velocity for wind erosion of each wind erosion unit is measured by wind tunnel experiments on undisturbed soil samples. Then, three dimensional wind fields under different wind strength are simulated by Computational Fluid Dynamics (CFD) model, and the simulated wind fields are integrated with the land surface parameters such as soil erodibility and threshold wind velocity. Wind erosion risk and wind erosion potential are calculated. Quantitative evaluation in the Xilingele grassland landscape system is then achieved, and the wind erosion process and spatial pattern are understood. |
| 中文关键词 | 风蚀 ; 草地景观系统 ; 土壤可蚀性 ; 临界侵蚀风速 ; 风场模拟 |
| 来源机构 | 北京师范大学 |
| 资源类型 | 项目 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/346644 |
| 推荐引用方式 GB/T 7714 | 张卓栋.融合地表参数与风场模拟的草地景观系统风蚀定量评价：以锡林郭勒草原为例.2014. |
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