Influence of soil properties, topography, and land cover on soil organic carbon and total nitrogen concentration: A case study in Qinghai-Tibet plateau based on random forest regression and structural equation modeling
文献类型：期刊论文
| 作者 | Dai, Lijun3; Ge, Jingsong4; Wang, Lingqing3,4; Zhang, Qian3; Liang, Tao3; Bolan, Nanthi5; Lischeid, Gunnar1; Rinklebe, Joerg2,6 |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2022-05-15 |
| 卷号 | 821页码:11 |
| 关键词 | Topography Soil properties Land cover Partial Dependence Plot Qinghai-Tibet Plateau |
| ISSN号 | 0048-9697 |
| DOI | 10.1016/j.scitotenv.2022.153440 |
| 通讯作者 | Wang, Lingqing(wanglq@igsnrr.ac.cn) |
| 英文摘要 | The effects of topography, land cover type, and soil physicochemical properties on the distribution of soil organic carbon (SOC) and total nitrogen (TN) have drawn growing attention recently, but little is known about how these features-associated interactions impact SOC and TN. To elucidate how these interactions affect the preservation of carbon and nitrogen in soils, we used data-driven models (random forest regression and structural equation modeling) to identify the dominant environmental factors affecting the distribution of SOC and TN in two different soil layers (0-20 and 20-40 cm) of the Qinghai-Tibet plateau. In addition, an algorithm based on random forest ("Boruta") was chosen to identify the relevant influencing factors and partial dependence was used to depict the two most important factors. We found that rather than land cover type, environmental properties, such as soil physicochemical characteristics and altitude had the most significant effects on the distribution of SOC and TN. Our findings indicate that elevation and TN are the two most important factors influencing SOC in the surface and subsurface soil layers. Moreover, total potassium (TK) impacts TN content in the surface soil layer, but only in a specific range of concentrations, which could be attributed to anthropogenic activities such as applying nitrogen and potassium fertilizers to increase the yields of local food crop, Tibetan hulless barley. These findings provide a scientific perspective on soil nutrient preservation. |
| WOS关键词 | CLIMATE-CHANGE ; LOESS PLATEAU ; SPATIAL-DISTRIBUTION ; ALTITUDE GRADIENT ; R PACKAGE ; VEGETATION ; FRACTIONS ; STOCKS ; MATTER ; MOISTURE |
| 资助项目 | National Natural Science Foundation of China[42173064] ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP)[2019QZKK1003] ; Alexander von Humboldt Foundation |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000766802600004 |
| 出版者 | ELSEVIER |
| 资助机构 | National Natural Science Foundation of China ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Alexander von Humboldt Foundation |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/172549]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Wang, Lingqing |
| 作者单位 | 1.Leibniz Ctr Agr Landscape Res, D-15374 Muncheberg, Germany 2.Sejong Univ, Dept Environm & Energy, Dept Environm, Seoul 05006, South Korea 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China 4.Ecol Environm Planning & Environm Protect Technol, Xining 810007, Peoples R China 5.Univ Wester Australia, Sch Agr & Environm, UWA Inst Agr, Perth, WA 6001, Australia 6.Univ Wuppertal, Sch Architecture & Civil Engn, Inst Fdn Engn Water & Waste Management Soil & Gro, Pauluskirchstr 7, D-42285 Wuppertal, Germany |
| 推荐引用方式 GB/T 7714 | Dai, Lijun,Ge, Jingsong,Wang, Lingqing,et al. Influence of soil properties, topography, and land cover on soil organic carbon and total nitrogen concentration: A case study in Qinghai-Tibet plateau based on random forest regression and structural equation modeling[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2022,821:11. |
| APA | Dai, Lijun.,Ge, Jingsong.,Wang, Lingqing.,Zhang, Qian.,Liang, Tao.,...&Rinklebe, Joerg.(2022).Influence of soil properties, topography, and land cover on soil organic carbon and total nitrogen concentration: A case study in Qinghai-Tibet plateau based on random forest regression and structural equation modeling.SCIENCE OF THE TOTAL ENVIRONMENT,821,11. |
| MLA | Dai, Lijun,et al."Influence of soil properties, topography, and land cover on soil organic carbon and total nitrogen concentration: A case study in Qinghai-Tibet plateau based on random forest regression and structural equation modeling".SCIENCE OF THE TOTAL ENVIRONMENT 821(2022):11. |
入库方式： OAI收割
来源：地理科学与资源研究所
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