Regional spatial pattern of deep soil water content and its influencing factors
文献类型：SCI/SSCI论文
| 作者 | Wang Y. Q. ; Shao M. A. ; Liu Z. P. ; Warrington D. N. |
| 发表日期 | 2012 |
| 关键词 | spatial variability land-use management geostatistics multiple linear regression residual maximum likelihood analysis Loess Plateau of China remote-sensing footprints field-scale variability loess-plateau moisture variability land-use china catchment model precipitation vegetation |
| 英文摘要 | Plant root systems can utilize soil water to depths of 10 m or more. Spatial pattern data of deep soil water content (SWC) at the regional scale are scarce due to the labour and time constraints of field measurements. We measured gravimetric deep SWC (DSWC) at depths of 200, 300, 400, 500, 600, 800 and 1000 cm at 382 sites across the Loess Plateau, China. The coefficient of variation was high for soil water content (SWC) in the horizontal direction (48%), but was relatively small for SWC in the vertical direction (9%). Semivariogram ranges for DSWC at different depths were between 198 and 609 km. Kriged distribution maps indicated that deep soil layers became moister along northwest to southeast transects. Multiple statistical analyses related DSWC to plant characteristics (e. g. plant age explained >21% of the variability), geographical location and altitude (8-13%), soil texture and infiltrability, evaporation zone and eco-hydrological processes (P < 0.05). Regional land management decisions can be based on our DSWC distribution data to determine land uses and plant species appropriate for the soil type and location that would maintain a stable soil water balance. Maintaining infiltrability is of great importance in this and other water-scarce regions of the world. |
| 出处 | Hydrological Sciences Journal-Journal Des Sciences Hydrologiques |
| 卷 | 57 |
| 期 | 2 |
| 页 | 265-281 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 0262-6667 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/30734]  |
| 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 | Wang Y. Q.,Shao M. A.,Liu Z. P.,et al. Regional spatial pattern of deep soil water content and its influencing factors. 2012. |
入库方式： OAI收割
来源：地理科学与资源研究所
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