Soil erodibility and its scale-specific controls along a southeast-northwest transect on the Tibetan Plateau
文献类型：期刊论文
| 作者 | Zhu, Xuchao2,3,4; Huang, Laiming1,2,5; Wang, Jiao2; Shao, Mingan1,2 |
| 刊名 | CATENA
 |
| 出版日期 | 2023-11-01 |
| 卷号 | 232页码:11 |
| ISSN号 | 0341-8162 |
| 关键词 | Soil erodibility Spatial variability Scale-specific controls MEMD Tibetan Plateau |
| DOI | 10.1016/j.catena.2023.107431 |
| 通讯作者 | Huang, Laiming(huanglm@igsnrr.ac.cn) |
| 英文摘要 | Soil erodibility (K) is a key factor in the prediction of soil erosion. K on the Tibetan Plateau is affected by both soil properties and the alpine environment, but the intensity and scale of the influences of soil and environment variables on K have rarely been studied. This study aimed to identify the scale-specific factors controlling K and their relationships along a 1970-km transect on the plateau using multivariate empirical-mode decomposition. The transect was established in the central part of Tibet Autonomous Region, and 60 sampling points were set at an approximate fixed interval to investigate the properties of surface soil and associated environmental factors. Mean K of the transect was 0.0340 t hm2 h MJ-1 mm- 1 hm-2, with a range of 0.0138-0.0464. K and 13 other soil and environmental variables were synchronously decomposed into four intrinsic mode functions (IMFs) and one residue. The spatial scales of IMF1-4 were 114, 193, 320 and 670 km, respectively. The proportion of variation of IMF1 in the total variation for all factors except mean annual precipitation (MAP) ranked first or second, indicating that most of the spatial variation of the variables mainly occurred at small scales. Sand, silt and clay contents had the same correlations with K at the sampling scale and each decomposed scale, and correlations of K with other environmental variables varied with scale due to the different main process scales of the variables and K. The accuracy of the prediction model established considering the scale effect was higher than the accuracy of the model without considering this effect. This study identified the main factors influencing K at different spatial scales along a long transect on the Tibetan Plateau and established K-prediction models considering the effect of scale, which provides a basis for accurately predicting soil erodibility in alpine regions. |
| WOS关键词 | EMPIRICAL MODE DECOMPOSITION ; LOESS PLATEAU ; FREEZE-THAW ; WATER ; EROSION ; STABILITY ; USLE ; TIME ; PREDICTION ; FARMLAND |
| 资助项目 | Second Tibetan Plateau Scientific Expedition and Research (STEP) Program[2019QZKK0306] ; Central Guidance for Local Science and Technology Development Project[20231ZDD02003-2] ; Natural Science Foundation of Jiangsu Prov-ince, China[BK20220163] ; Jiangxi Provincial Natural Science Foundation[20224BAB203031] ; Youth Innovation Promotion Association of Chinese Academy of Sciences[2023327] ; Youth Innovation Promotion Association of Chinese Academy of Sciences[2019052] |
| WOS研究方向 | Geology ; Agriculture ; Water Resources |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:001051749400001 |
| 资助机构 | Second Tibetan Plateau Scientific Expedition and Research (STEP) Program ; Central Guidance for Local Science and Technology Development Project ; Natural Science Foundation of Jiangsu Prov-ince, China ; Jiangxi Provincial Natural Science Foundation ; Youth Innovation Promotion Association of Chinese Academy of Sciences |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/196420]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Huang, Laiming |
| 作者单位 | 1.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Yellow River Delta Modern Agr Engn Lab, Beijing 100101, Peoples R China 3.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Peoples R China 4.Natl Engn & Technol Res Ctr Red Soil Improvement, Nanchang 331717, Peoples R China 5.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Yellow River Delta Modern Agr Engn Lab, 11A Datun Rd, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhu, Xuchao,Huang, Laiming,Wang, Jiao,et al. Soil erodibility and its scale-specific controls along a southeast-northwest transect on the Tibetan Plateau[J]. CATENA,2023,232:11. |
| APA | Zhu, Xuchao,Huang, Laiming,Wang, Jiao,&Shao, Mingan.(2023).Soil erodibility and its scale-specific controls along a southeast-northwest transect on the Tibetan Plateau.CATENA,232,11. |
| MLA | Zhu, Xuchao,et al."Soil erodibility and its scale-specific controls along a southeast-northwest transect on the Tibetan Plateau".CATENA 232(2023):11. |
入库方式： OAI收割
来源：地理科学与资源研究所
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