Evaluation of the soil water content of two managed ecosystems using cosmic-ray neutron sensing on China's Loess Plateau
文献类型：期刊论文
| 作者 | Liu, Chenggong2,3; Jia, Xiaoxu2,3,5; Ren, Lidong2,3; Zhu, Xuchao1; Shao, Ming'an2,3,4 |
| 刊名 | EUROPEAN JOURNAL OF SOIL SCIENCE
 |
| 出版日期 | 2023 |
| 卷号 | 74期号:1页码:15 |
| 关键词 | cosmic-ray neutron sensing footprint radius multiscale monitoring response pattern soil moisture |
| ISSN号 | 1351-0754 |
| DOI | 10.1111/ejss.13339 |
| 通讯作者 | Jia, Xiaoxu(jiaxx@igsnrr.ac.cn) |
| 英文摘要 | Cosmic-ray neutron sensing (CRNS) is a promising method for the continuous monitoring of soil water content (theta(v)) at the hectometre scale. However, few studies have validated its applicability within the complex terrains of various ecosystems in semiarid loess regions. In this study, CRNS-based theta(v) was measured on China's Loess Plateau under two managed ecosystems (Caragana korshinskii K. shrubland [KOS] and Medicago sativa L. grassland [SAG]). The accuracy of CRNS measurement was assessed with the traditional oven-drying method, while its sensitivity to theta(v) variation during the study period was compared with typical point-scale monitoring sensors (EC-5, Decagon Devices, Inc.). CRNS was found to be strongly correlated with the oven-drying based theta(v) under both ecosystems, with coefficients of determination (R-2) of 0.99 and 0.93, and root mean square errors of 0.006 and 0.007 cm(3)/cm(3), for KOS and SAG, respectively. The mean monitoring radius of the CRNS was approximately 204 and 231 m for KOS and SAG, with a mean measurement depth of approximately 39 and 45 cm, respectively. Moreover, the theta(v) determined by the CRNS and EC-5 sensors exhibited similar trends during the observation period, excluding that for April. However, the CRNS-based theta(v) had a higher spatial representation for both managed ecosystems compared with that for EC-5. No significant difference was detected in the response range of theta(v) to precipitation between the CRNS and EC-5 sensors at a depth of 0-10 cm, whereas the response time of CRNS for KOS was much shorter than that of EC-5 sensors (p < 0.01). Overall, the CRNS measured hectometre-scale theta(v) had acceptable accuracy and sensitively traced the precipitation response under different ecosystems with high theta(v) heterogeneity in the semiarid loess regions. |
| WOS关键词 | UNIVERSAL CALIBRATION FUNCTION ; MOISTURE ; SCALE ; PROBE ; SENSORS ; STORAGE ; COVERS ; AREA |
| 资助项目 | National Natural Science Foundation of China[41877016] ; National Natural Science Foundation of China[42022048] |
| WOS研究方向 | Agriculture |
| 语种 | 英语 |
| WOS记录号 | WOS:000915479200001 |
| 出版者 | WILEY |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/189366]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Jia, Xiaoxu |
| 作者单位 | 1.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing, Peoples R China 2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing, Peoples R China 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing, Peoples R China 4.Northwest A&F Univ, Coll Nat Resources & Environm, Yangling, Peoples R China 5.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Chenggong,Jia, Xiaoxu,Ren, Lidong,et al. Evaluation of the soil water content of two managed ecosystems using cosmic-ray neutron sensing on China's Loess Plateau[J]. EUROPEAN JOURNAL OF SOIL SCIENCE,2023,74(1):15. |
| APA | Liu, Chenggong,Jia, Xiaoxu,Ren, Lidong,Zhu, Xuchao,&Shao, Ming'an.(2023).Evaluation of the soil water content of two managed ecosystems using cosmic-ray neutron sensing on China's Loess Plateau.EUROPEAN JOURNAL OF SOIL SCIENCE,74(1),15. |
| MLA | Liu, Chenggong,et al."Evaluation of the soil water content of two managed ecosystems using cosmic-ray neutron sensing on China's Loess Plateau".EUROPEAN JOURNAL OF SOIL SCIENCE 74.1(2023):15. |
入库方式： OAI收割
来源：地理科学与资源研究所
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