Knowledge Resource Center for Ecological Environment in Arid Area
| 项目编号 | 51409271 |
| 植被生态稳定的临界水文条件研究 | |
| 张秋霞 | |
| 主持机构 | 中国水利水电科学研究院 |
| 开始日期 | 2015 |
| 结束日期 | 2017 |
| 资助经费 | 260000(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 | Groundwater is main source for vegetation in arid and semiarid region. The depth to groundwater determines the stability of vegetation ecosystem. Groundwater declines by over development and the maintain for vegetation is dispeared in some areas which casued vcegetation degradetion and soil sandy. The reasonal depth to groundwater should be stuided for vegetation stability.There is minor study on theory and method for groundwater maintaining vegetion based on physical process and mechenism..Accroding to theoretical discussion and test verification, the mechenism of groundwater maintaining vegetation is analyzed and the physical process of it is discripted. Based on the theory of evaporation from phreatic water for vegetation roots, the capillary rise height is taken as key technical problem and the model of threshold depth to groundwater for maintaining vegetaion is built based on soil particle model.The threshold depth to groundwater maintaining vegetation in arid and semiarid region is proposed through model calculation and test verification.The research results are basic support for water resources development and ecosystem protection. |
| 来源机构 | 中国水利水电科学研究院 |
| 资源类型 | 项目 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/346763 |
| 推荐引用方式 GB/T 7714 | 张秋霞.植被生态稳定的临界水文条件研究.2015. |
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