Specific-scale correlations between soil water content and relevant climate forcing factors across two climate zones
文献类型：期刊论文
| 作者 | Zhao, Yali3,5,7; Wang, Yunqiang1,3,4,6,7; Zhang, Xingchang5,7; Wang, Li5,7; Hu, Wei2; Wang, Ting3 |
| 刊名 | JOURNAL OF HYDROLOGY
 |
| 出版日期 | 2020-06-01 |
| 卷号 | 585页码:13 |
| 关键词 | Deep soil Scale dependence Climate zone Soil water content Multivariate empirical mode decomposition |
| ISSN号 | 0022-1694 |
| DOI | 10.1016/j.jhydrol.2020.124800 |
| 通讯作者 | Wang, Yunqiang(wangyq@ieecas.cn) |
| 英文摘要 | Soil water content (SWC) is determined through water exchanges between surface soil and the atmosphere, and changes in SWC will influence both energy conversions and water cycles. Being affected by different climate forcing factors (forcings), SWC is spatially and temporally variable, occurring at various intensities and scales. We compared scale-specific controls on SWC in a sub-humid and a semiarid climate zone based on a multivariate empirical mode decomposition (MEMD) method in conjunction with a multivariate dataset, including SWC (collected separately seven times within five soil layers to a depth of 500 cm) and eight measured climate forcing factors (i.e., precipitation, temperature, normalized differential vegetation index (NDVI), elevation, clay, silt, sand and soil organic carbon (SOC)). We also identified the percent variance of intrinsic mode functions (IMFs) and residuals relative to the original data. Two to three IMFs of SWC were further obtained in the two climate zones. IMFs explained the percent variance of SWC (79.3%), NDVI (77.3%), clay content (76.6%) and SOC (93.9%) to the original data in the sub-humid climate zone, while residuals from all environmental variables (except for SOC) yielded most of the total variance (55.5-93.2%) in the semiarid climate zone. Correlations between the two climate zones exhibited different IMF characteristics (scales) and different climatic conditions. Forcings of the two climate zones also played different roles in controlling SWC. Precipitation and temperature controlled large-scale SWC in both climate zones, namely, NDVI had an inverse effect on SWC between the two climate zones, SOC had a moderate and large-scale effect on SWC in the sub-humid climate zone and clay content had a comparatively critical effect on SWC in the semiarid climate zone. Scale-specific controls of soil properties on SWC were depth dependent in the sub-humid climate zone, while similar characteristics were obtained among the five soil layers in the semiarid climate zone. The specific scale dependence of SWC and relevant forcings were similar regardless of soil water condition (dry or wet). Our results offer insight into relationships between SWC and the main forcings of two different regional climate zones and their scale-dependent controls. |
| WOS关键词 | MOISTURE SPATIAL VARIABILITY ; TEMPORAL STABILITY ; LOESS PLATEAU ; LAND-USE ; UNCERTAINTY PRINCIPLE ; DEPTH PERSISTENCE ; STORAGE ; PATTERNS ; PRECIPITATION ; TRANSECT |
| 资助项目 | National Key Research and Development Program of China[2019YFA0607303] ; National Natural Science Foundation of China[41530854] ; National Natural Science Foundation of China[41722106] ; Youth Innovation Promotion Association, CAS |
| WOS研究方向 | Engineering ; Geology ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000544230000058 |
| 出版者 | ELSEVIER |
| 资助机构 | National Key Research and Development Program of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association, CAS |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/162460]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Wang, Yunqiang |
| 作者单位 | 1.Xi An Jiao Tong Univ, Dept Earth & Environm Sci, Xian 710049, Peoples R China 2.New Zealand Inst Plant & Food Res Ltd, Private Bag 4704, Christchurch 8140, New Zealand 3.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Shaanxi, Peoples R China 4.CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China 5.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China 6.Beijing Normal Univ, Interdisciplinary Res Ctr Earth Sci Frontier, Beijing 100875, Peoples R China 7.Grad Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhao, Yali,Wang, Yunqiang,Zhang, Xingchang,et al. Specific-scale correlations between soil water content and relevant climate forcing factors across two climate zones[J]. JOURNAL OF HYDROLOGY,2020,585:13. |
| APA | Zhao, Yali,Wang, Yunqiang,Zhang, Xingchang,Wang, Li,Hu, Wei,&Wang, Ting.(2020).Specific-scale correlations between soil water content and relevant climate forcing factors across two climate zones.JOURNAL OF HYDROLOGY,585,13. |
| MLA | Zhao, Yali,et al."Specific-scale correlations between soil water content and relevant climate forcing factors across two climate zones".JOURNAL OF HYDROLOGY 585(2020):13. |
入库方式： OAI收割
来源：地理科学与资源研究所
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