Temporal stability of soil water storage in diverse soil layers
文献类型：SCI/SSCI论文
| 作者 | Gao L. ; Shao M. G. |
| 发表日期 | 2012 |
| 关键词 | Soil moisture Temporal stability Spatio-temporal variability Hillslope scale Depth dependency remote-sensing footprints spatial-patterns moisture variability semiarid steppe time stability neutron probe field persistence catchment dependence |
| 英文摘要 | Knowledge of soil water storage (SWS) within soil profiles is crucial when selecting appropriate practices for the restoration of vegetation. To study the temporal stability of SWS and identify representative locations in diverse soil layers, an analysis of temporal stability was performed using Spearman rank correlation coefficients and relative differences. From July 2008 to October 2010, the SWS of three soil layers (0-1, 1-2, and 2-3 m) were measured using a neutron probe at 91 locations on a hillslope on the Loess Plateau, China. A total of 20 SWS datasets were collected over the period of measurement. The results showed that the variability of SWS decreased over time and increased over space with the increase in soil depth. High Spearman rank correlation coefficients (p<0.01) indicated a strong temporal stability of spatial patterns for all soil layers. Temporal stability increased with increasing soil depth. Furthermore, the closer two soil layers were within a given profile and the deeper any two adjacent soil layers were, the more similar were the temporal patterns. A significant negative correlation (p<0.01) existed between the status of soil moisture and temporal stability, and the dependency increased with soil depth. With increasing soil depth, more locations were able to estimate the mean SWS of the area. None, however, represented the mean values for all three soil layers separately. (C) 2012 Elsevier B.V. All rights reserved. |
| 出处 | Catena |
| 卷 | 95 |
| 页 | 24-32 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 0341-8162 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/26935]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Gao L.,Shao M. G.. Temporal stability of soil water storage in diverse soil layers. 2012. |
入库方式： OAI收割
来源：地理科学与资源研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。