摘要
基于Web of Science核心合集数据库,借助知识图谱工具,对2009-2018年国际土壤水蚀研究相关文献进行计量分析,分析其文献发表动态、学科分布和热点关键词特征。发现10年来土壤水蚀研究主要聚焦于5方面。1)空间分布模型和复合特性稳定同位素分析方法近年来得到广泛应用,水蚀模型融合现代信息技术是实现多尺度研究的必然途径。2)气候变化通过影响降雨量和降雨强度、CO_(2)浓度,改变气温,导致径流和水蚀的变化;土地利用变化影响土壤特性和地表径流分布,改变土壤水蚀。3)水蚀显著改变土壤物理、化学、生物性质,导致农业生产力下降;通过沉积物输送引起非点源污染和水质恶化;水蚀过程显著改变碳、氮、磷的横向流动和再分配,影响生物地球化学循环。4)土壤水蚀是一个多尺度过程,具有尺度依赖性,如何系统研究多尺度水蚀过程及其尺度效应是研究者关注的核心问题。5)水蚀防治研究逐渐从小区尺度上推至区域、国家和全球尺度,研究者在工程措施、生物措施和土壤管理措施方面开展了针对性研究;黄土高原是水蚀防治与可持续发展研究的区域重点。在未来土壤水蚀研究过程中,有待于在提高土壤侵蚀模型模拟精度、发展大尺度水蚀模型基础上,深化水蚀作用下土壤碳循环研究,创新土壤侵蚀分析的尺度转换技术方法,逐步形成适应复杂变化环境、提升人类福祉、面向可持续发展目标的土壤水蚀防治理论与技术方法体系。
[Background] Soil erosion is a grave threat to the sustainability of human society and economy. Soil water erosion,as a widespread soil erosion type in the world,is one of the main forms of soil degradation. In recent years,under the pressure of global climate change and frequent human disturbance,the risk of water erosion is further aggravated. However,the existing review articles in water erosion have not yet analyzed the literature publication dynamics and hot keyword evolution characteristics in recent years, and there is a lack of systematic collation of research hotspots in recent years.[Methods]Searching pattern in the Web of Science core collection database was Topic = soil water erosion or Topic = soil erosion by water or Topic = hydraulic erosion or Topic = soil hydraulic power erosion. This paper applied CiteSpace,a knowledge map tool,to conduct a bibliometric analysis of soil water erosion research from 2009 to 2018,revealing the literature output trends,subject distribution and hotspot keywords. [Results]There are 5 aspects on soil water erosion research in the past decade: 1)Spatial distribution models and stable isotope analysis methods have been widely used in recent years,and erosion models combined with modern information technology is an inevitable way to conduct multiscale research. 2) Climate change has a great effect on runoff and water erosion by changing precipitation,CO2 concentration and temperature,and water erosion is affected by land use change for influencing on soil properties and surface runoff distribution simultaneously. 3) Water erosion causes significant effect on soil physical,chemical and biological properties,resulting in decline of agricultural productivity,non-point source pollution and deterioration of water quality occurs by sediment transport.Water erosion process significantly changes the lateral flow and redistribution of carbon,nitrogen,and phosphorus,affecting the biogeochemical cycle. 4) Soil water erosion is a multi-scale process with scale dependence. How to syst
作者
王涵
赵文武
贾立志
WANG Han;ZHAO Wenwu;JIA Lizhi(State Key Laboratory of Earth Surface Processes and Resource Ecology,Faculty of Geographical Science,Beijing Normal University,100875,Beijing,China;Institute of Land Surface System and Sustainable Development,Faculty of Geographical Science,Beijing Normal University,100875,Beijing,China)
出处
《中国水土保持科学》
CSCD
北大核心
2021年第1期141-151,共11页
Science of Soil and Water Conservation
基金
国家自然科学基金重大课题“干旱半干旱地区土地覆被变化及其生态-水文效应”(41991232)。
关键词
土壤水蚀
全球变化
环境效应
尺度效应
水土保持
soil water erosion
global change
environmental effects
scale effects
soil and water conversation
