CAJ | 학술논문

全球河流入海沙量作为地球系统运行变化的重要而敏感的指标，在一定程度上会对全球社会、经济和环境问题产生重要影响，从而引起国内外研究者的高度关注。针对由于缺乏可靠、完整的河流输沙量数据，很难准确估算全球河流入海沙量的数值及其变化，且已有文献估算值差别很大，缺乏统一认识的问题，收集整理了20世纪50年代至今国内外27篇文献中全球河流入海沙量的估算值，并对近期相关典型研究成果进行述评。调查发现，早期估算的入海沙量数值差异很大，随着人们对这一问题的深入研究，近年来全球入海沙量估算值日趋合理，大多集中在120亿~200亿t/a。分析认为，人类活动影响前后的河流入海沙量宜分别按190亿t/a和130亿t/a考虑。
전구하류입해사량작위지구계통운행변화적중요이민감적지표，재일정정도상회대전구사회、경제화배경문제산생중요영향，종이인기국내외연구자적고도관주。침대유우결핍가고、완정적하류수사량수거，흔난준학고산전구하류입해사량적수치급기변화，차이유문헌고산치차별흔대，결핍통일인식적문제，수집정리료20세기50년대지금국내외27편문헌중전구하류입해사량적고산치，병대근기상관전형연구성과진행술평。조사발현，조기고산적입해사량수치차이흔대，수착인문대저일문제적심입연구，근년래전구입해사량고산치일추합리，대다집중재120억~200억t/a。분석인위，인류활동영향전후적하류입해사량의분별안190억t/a화130억t/a고필。
The amount of global fluvial sediment discharge to the oceans is an important and sensitive indicator, reflecting changes in the operation of the Earth, and has a significant influence on global socio-economic and environmental problems. Global river-to-ocean sediment flux has attracted the attention of many scholars around the world. Due to the lack of reliable and complete fluvial sediment load data, it is difficult to estimate the amount and variation of global fluvial sediment discharge to the oceans. There are large differences and inconsistencies between the values estimated by previous studies. In this paper, typical results obtained from 27 recently published papers in regards to the estimations of the global fluvial sediment discharge to the oceans are reviewed. The investigation shows that there have been large differences between estimates of the amount of global fluvial sediment discharge to the oceans in the early stages of such research, but, with increasingly in-depth examination, the estimated results in recent years have tended to be reasonable, with the amount mostly ranging from 12 to 20 billion tons per year. It is concluded that the amount of fluvial sediment discharge to the oceans before and after human activities can be considered 19 billion tons per year and 13 billion tons per year, respectively.