Knowledge Resource Center for Ecological Environment in Arid Area
| 项目编号 | 41501044 |
| 荒漠地区梭梭根系对优先流影响的试验研究 | |
| 赵丽雯 | |
| 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 | Preferential flow, characterized by a fast infiltration rate of bypassing the soil matrix, is a universal phenomenon. It is of importance for both plant growth and groundwater recharge especially in desert regions. Shrub roots is considered to be a main cause for preferential flow, the influencing mechanism, however, has not yet been well studied. In this project, Haloxylon Ammodendron is taken as an object, and three ages of them are selected. For each of them, three different experiments are conducted in the area with and without roots: 1) quantitatively analyzing the influence of shrub roots on preferential flow in the combination of in-situ dye tracing test and some tests on root indexes and basic physical parameters; 2) analyzing the influences of shrub roots on initiations and characteristics of preferential flow by soil column tests; 3) discussing the feedbacks between shrub root growth and the occurrence of preferential flow using TDR and minirhzotron techniques. The results will be helpful not only for revealing the influencing mechanism of shrub roots on preferential flow in desert regions, but also for vegetation restoring and using groundwater resources scientifically. |
| 中文关键词 | 土壤水分 ; 水分运移 ; 荒漠 ; 优先流 |
| 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/2XILL650/346930 |
| 推荐引用方式 GB/T 7714 | 赵丽雯.荒漠地区梭梭根系对优先流影响的试验研究.2016. |
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