Evaluation of Snowmelt and Rainfall Erosion in the Total Soil Losses in a Typical Small Watershed in Black Soil Region of Northeast China

IF 1.4 4区农林科学 Q4 SOIL SCIENCE

Eurasian Soil Science Pub Date : 2024-07-10 DOI:10.1134/s1064229324600477

Zhongzheng Ren, Wei Hu, Yuan Chen, Guihui Ding, Xu Fan, Xingyi Zhang

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Abstract

Snowmelt erosion and rainfall erosion are important components of soil erosion in Northeast China. Studying how snowmelt and rainfall affect runoff and sediment yield is essential to control soil erosion in this region. Based on the soil and water loss observation data in small watershed during snowmelt and rainfall periods, snowmelt and rainfall erosion processes were studied. The runoff–sediment relationship was analyzed. The results indicate that 13 snowmelt runoff events and 14 rainfall runoff events were recorded. During the snowmelt period, runoff depth (RD) and sediment yield (SY) exhibited a slow increase (early stage), rapid increase (middle stage), and then rapid decrease (late stage) trend. RD and SY in the middle stage were higher than those in the early and late stages. Moreover, during the rainfall period, soil erosion mainly occurred from July to August; during these two months, the rainfall and rainfall erosivity accounted for 66.0 and 91.1% of the total rainfall and rainfall erosivity, respectively; and the RD and SY in this period accounted for 88.4 and 89.8% of total amounts in the whole rainfall period, respectively. In addition, the contributions of snowmelt and rainfall to RD and SY were 18.6 and 81.4%, and 3.8 and 96.2%, respectively. Hysteresis analysis suggested that clockwise hysteresis loop was the dominant pattern, followed by eight-shaped anticlockwise loop, and complex anticlockwise loop.

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东北黑土区典型小流域融雪和降雨侵蚀对土壤总流失的影响评价

摘要融雪侵蚀和降雨侵蚀是中国东北地区水土流失的重要组成部分。研究融雪和降雨对径流和泥沙量的影响对控制该地区的水土流失至关重要。基于融雪期和降雨期小流域水土流失观测资料，研究了融雪和降雨侵蚀过程。分析了径流与沉积物的关系。结果表明，共记录了 13 次融雪径流事件和 14 次降雨径流事件。在融雪期，径流深度（RD）和泥沙产量（SY）呈现出缓慢增加（早期）、快速增加（中期）和快速减少（晚期）的趋势。中期的 RD 和 SY 均高于早期和后期。此外，在降雨期，水土流失主要发生在 7 月至 8 月，这两个月的降雨量和降雨侵蚀量分别占总降雨量和总降雨侵蚀量的 66.0% 和 91.1%，这一时期的 RD 和 SY 分别占整个降雨期总量的 88.4% 和 89.8%。此外，融雪和降雨对 RD 和 SY 的贡献率分别为 18.6% 和 81.4%，以及 3.8% 和 96.2%。滞回分析表明，顺时针滞回是主要模式，其次是八形逆时针滞回和复合逆时针滞回。

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来源期刊

Eurasian Soil Science 农林科学-土壤科学

CiteScore

2.70

自引率

35.70%

发文量

137

审稿时长

12-24 weeks

期刊介绍： Eurasian Soil Science publishes original research papers on global and regional studies discussing both theoretical and experimental problems of genesis, geography, physics, chemistry, biology, fertility, management, conservation, and remediation of soils. Special sections are devoted to current news in the life of the International and Russian soil science societies and to the history of soil sciences. Since 2000, the journal Agricultural Chemistry, the English version of the journal of the Russian Academy of Sciences Agrokhimiya, has been merged into the journal Eurasian Soil Science and is no longer published as a separate title.