Knowledge Resource Center for Ecological Environment in Arid Area
| 项目编号 | 41501043 |
| 地表覆盖层结构对地面径流和土壤侵蚀过程的影响机制 | |
| 邱阳 | |
| 主持机构 | 中国科学院寒区旱区环境与工程研究所 |
| 开始日期 | 2016 |
| 结束日期 | 2018 |
| 资助经费 | 230000(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 | Straw and gravel mulch are important dry farming measures, have attracted extensive attention from scholars at home and abroad because of their good water retention effect. Straw and gravel mulch can significantly change soil environment and hydrological processes, but the mechanism of the mulch layer structural changes affecting the surface runoff, soil erosion and nutrient elements loss processes is not clear, and the analog computation of soil hydrological process under mulch layer is still unavailable now due to the lack of comprehensive and sensitive mulch layer structural characteristic parameters and complex hydrological process changes after mulching. This project aims to make the mechanism of the mulching layer structural changes affecting the surface runoff, soil erosion and nutrient elements loss process clear and definite through the observations of the effects of straw and gravel mulch layer structure changes on soil hydrological process, and establish models for surface runoff, soil erosion and nutrient element loss processes under surface mulching, which are adapt to different mulching layer types and structures. So as to provide theoretical support for optimizing the surface mulching layer structure and improving the water productivity and fertilizer utilization ratio of dry farmland, and also provide parameters and basis for simulation study of land surface hydrological processes under surface mulching. |
| 中文关键词 | 地表覆盖 ; 旱作农业 ; 地面径流 ; 土壤侵蚀 ; 营养元素流失 |
| 来源机构 | 中国科学院西北生态环境资源研究院 |
| 资源类型 | 项目 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/346950 |
| 推荐引用方式 GB/T 7714 | 邱阳.地表覆盖层结构对地面径流和土壤侵蚀过程的影响机制.2016. |
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