Comparison of environmental controls on soil moisture spatial patterns at mesoscales: Observational evidence from two regions in China
文献类型：期刊论文
| 作者 | Wang, Tiejun1,2; Wu, Dongdong1; Zhan, Chesheng3
|
| 刊名 | GEODERMA
 |
| 出版日期 | 2020-09-01 |
| 卷号 | 374页码:10 |
| ISSN号 | 0016-7061 |
| 关键词 | Soil moisture Spatial pattern Mesoscale scale Precipitation Soil texture |
| DOI | 10.1016/j.geoderma.2020.114451 |
| 通讯作者 | Wang, Tiejun(tiejun.wang@tju.edu.cn) |
| 英文摘要 | Soil moisture plays a vital role in terrestrial water cycles, which requires the understanding of the spatial characteristics of soil moisture patterns and their influencing factors across different scales; however, inconsistent findings have been reported in the past with regards to the relative importance of meteorological (e.g., precipitation and evapotranspiration) and local (e.g., soil texture) factors in controlling soil moisture spatial variability at mesoscales. To further elucidate this issue, long-term soil moisture data from East and Northwest China were examined in this study, using two statistical methods of temporal stability analysis (TSA) and empirical orthogonal function (EOF) analysis. The TSA results showed that the spatial distributions of mean relative difference (MRD; an indicator of the relative wetness condition at a location as compared to the areal average wetness condition) of soil moisture had statistically significant correlations with mean annual precipitation ((P) over bar) and soil texture in both study regions; however, the spatial correlation between MRD and (P) over bar was much stronger in the Northwest region, suggesting that precipitation played a more important role in determining the spatial distribution of soil moisture in Northwest China. Moreover, the EOF analysis revealed that the primary soil moisture spatial structure was mostly related with soil texture in the East region while with (P) over bar in the Northwest region, which was also consistent with the TSA results. The stronger impact of precipitation on the soil moisture spatial distribution in the Northwest region could be largely attributed to the greater spatial variability in (P) over bar that varied by similar to 4.6 times from 171.2 to 791.0 mm/year across the region. By comparison, in the East region characterized by lower spatial variability in (P) over bar that varied by similar to 2.6 times from 484.2 to 1236.0 mm/year, soil texture exerted a stronger impact on the primary soil moisture spatial structure. Therefore, the observational evidence from this study demonstrated that the relative importance of meteorological and local factors in controlling mesoscale soil moisture spatial variability might vary considerably across regions, primarily depending on the spatial variability in those influencing factors across the region under consideration. |
| WOS关键词 | TEMPORAL STABILITY ; VARIABILITY ; SCALES ; PRECIPITATION ; DYNAMICS ; RAINFALL ; CLIMATE ; STATES ; TIME |
| 资助项目 | State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, CAS[SKLLQG1924] ; National Natural Scientific Foundation of China[U1612441] ; Tianjin University, China ; Thousand Talent Program for Young Outstanding Scientists of China |
| WOS研究方向 | Agriculture |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:000540257900006 |
| 资助机构 | State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, CAS ; National Natural Scientific Foundation of China ; Tianjin University, China ; Thousand Talent Program for Young Outstanding Scientists of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/162164]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Wang, Tiejun |
| 作者单位 | 1.Tianjin Univ, Inst Surface Earth Syst Sci, Weijin Rd 92, Tianjin 300072, Peoples R China 2.Tianjin Univ, Tianjin Key Lab Earth Crit Zone Sci & Sustainable, Weijin Rd 92, Tianjin 300072, Peoples R China 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Tiejun,Wu, Dongdong,Zhan, Chesheng. Comparison of environmental controls on soil moisture spatial patterns at mesoscales: Observational evidence from two regions in China[J]. GEODERMA,2020,374:10. |
| APA | Wang, Tiejun,Wu, Dongdong,&Zhan, Chesheng.(2020).Comparison of environmental controls on soil moisture spatial patterns at mesoscales: Observational evidence from two regions in China.GEODERMA,374,10. |
| MLA | Wang, Tiejun,et al."Comparison of environmental controls on soil moisture spatial patterns at mesoscales: Observational evidence from two regions in China".GEODERMA 374(2020):10. |
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。