| 引用本文: | 陈祎彤,李 敏,司炳成,等.宇宙射线中子法测量中尺度土壤含水率研究综述[J].灌溉排水学报,0,():-. |
| CHEN Yitong,LI Min,SI Bingcheng,et al.宇宙射线中子法测量中尺度土壤含水率研究综述[J].灌溉排水学报,0,():-. |
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| 摘要: |
| 土壤含水率是农业生产与灌溉管理中的重要监测指标，而田间土壤含水率存在较大的时空变异性，作为目前测定田间土壤含水率的一种新方法，宇宙射线中子法具有连续测量、高精确度、对场地无破坏等优点，已被证明可以测量数百米范围内（中尺度）一定深度的平均土壤含水率。该方法在点尺度和遥感大尺度之间架起了桥梁，正逐渐运用于农业灌溉管理、水文数据同化和水文建模等领域。为便于读者快速、详尽地了解宇宙射线中子法及其研究进展，本文通过凝练近年来宇宙射线中子法的相关研究进展与成果，全面总结了其测量原理、监测范围、影响因素及校正原理，并重点阐述了该方法在农业、水文等领域的应用现状、现存问题及发展趋势。 |
| 关键词: 土壤含水率;宇宙射线中子法;中尺度;原位监测;连续监测 |
| DOI： |
| 分类号:S152.7 |
| 基金项目:国家自然科学(41601222、41630860、41877017)；西北农林科技大学基本科研业务费(Z1090220118) |
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| Review of cosmic-ray neutron method on landscape scale soil moisture content measurement |
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CHEN Yitong, LI Min, SI Bingcheng, HU You
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Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas,Ministry of Education,Northwest A F University
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| Abstract: |
| Soil moisture content is an important monitoring index in agricultural production and irrigation management; however, there is a large temporal and spatial variability of soil moisture content in the field. As a new method for measuring soil moisture content in the field, the cosmic ray neutron method has the advantages of continuous measurement, high accuracy and no damage to the site. It has been demonstrated that can measure average soil moisture content at a given depth over a range of hundreds of meters (mesoscale), which builds a bridge between the point scale and remote sensing at large scale, and is being gradually applied to agricultural irrigation management, hydrological data assimilation and hydrological modeling. To facilitate readers a quick and detailed understanding of the cosmic ray neutron method and its research progress, this article reviewed progress and achievements of cosmic rays in recent years, comprehensively summarized the principle of measurement, monitoring scope, influence factors and correction principle, and expounds the method application in the field of agriculture, hydrology, the status quo, existing problems and development trend. |
| Key words: soil moisture content; cosmic-ray neutron probe method; landscape scale; in-situ monitoring; continuous monitoring |
