1.北京师范大学 环境演变与自然灾害教育部重点实验室, 北京 100875
2.北京林业大学 林学院,北京 100089
3.北京师范大学 地理科学学部, 北京 100875
4.北京师范大学 文理学院, 广东 珠海 519000
武杰(2002—),女(汉族),河北省保定市人,硕士研究生,研究方向为土壤复合侵蚀。Email:alice_wujie@163.com。
史培军(1959—),男(汉族),陕西省靖边县人,博士,教授,主要从事环境演变与自然灾害研究。Email:spj@bnu.edu.cn。
收稿:2025-03-03,
修回:2025-08-01,
纸质出版:2025-12-10
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武杰, 李素艳, 史培军, 等.中国北方农牧交错带东段土壤水蚀时空变化及影响因子[J].水土保持通报,2025,45(6):320-332.
Wu Jie, Li Suyan, Shi Peijun, et al. Spatiotemporal variation of soil water erosion and influencing factors in eastern region of agro-pastoral ecotone in northern China [J]. Bulletin of Soil and Water Conservation,2025,45(6):320-332.
武杰, 李素艳, 史培军, 等.中国北方农牧交错带东段土壤水蚀时空变化及影响因子[J].水土保持通报,2025,45(6):320-332. DOI: 10.13961/j.cnki.stbctb.2025.06.017. CSTR: 32312.14.stbctb.2025.06.017.
Wu Jie, Li Suyan, Shi Peijun, et al. Spatiotemporal variation of soil water erosion and influencing factors in eastern region of agro-pastoral ecotone in northern China [J]. Bulletin of Soil and Water Conservation,2025,45(6):320-332. DOI: 10.13961/j.cnki.stbctb.2025.06.017. CSTR: 32312.14.stbctb.2025.06.017.
目的
2
研究中国北方农牧交错带东段土壤水蚀时空变化,首次量化多因子交互作用对水蚀动态的影响,为该区域水土流失治理和生态环境治理修复提供决策依据和方法参考。
方法
2
基于RUSLE模型,对中国北方农牧交错带东段2000—2023年的土壤水蚀时空分异特征进行了归因分析,对土壤水蚀动态变化的主要贡献因子进行了定量分析。
结果
2
①农牧交错带东段多年平均土壤水蚀模数为777.94 t/(km
2
·a),大部分地区以微度和轻度为主,分别占总水蚀面积的69.3%和22.9%。 ②在2000—2023年,研究区土壤水蚀强度整体呈现轻微上升的变化趋势,上升率为0.90 t/(km
2
·a),东南部和西北部土壤水蚀强度减弱,西部土壤水蚀强度有所加剧。 ③农牧交错带东段土壤水蚀易发区主要分布在研究区中部赤峰市,西南部张家口市、锡林浩特市等地区。 ④农牧交错带东段2000—2023年土壤水蚀动态变化的主要贡献因子是植被覆盖管理因子,平均贡献率为64.18%,植被覆盖管理、水土保持措施和降雨侵蚀力的联合影响为23.12%,水土保持措施因子平均贡献率为10.57%,降雨侵蚀力因子平均贡献率为2.13%。RUSLE模型各参数间具有较强的交互作用,多因子联合影响对研究区水蚀动态变化有较大贡献。
结论
2
中国北方农牧交错带东段2000—2023年土壤水蚀情况整体较为平稳,研究期间随着植被覆盖度的提高和水土保持措施的实施,一定程度上缓解了降雨侵蚀力增加对水蚀强度的加剧作用。但该区域土壤水蚀形势依然较为严峻,低植被覆盖区和未采取水土保持措施的区域是水土流失治理的重点区域。
Objective
2
The spatiotemporal variations of soil water erosion in the eastern region of the agro-pastoral ecotone in northern China were investigated, and the effects of multi-factor interactions on water erosion dynamics were quantified first time, in order to provide decision-making support and methodological references for soil erosion control and ecological environment restoration in this region.
Methods
2
Based on the RUSLE model, an attribution analysis was conducted on the spatiotemporal differentiation characteristics of soil water erosion in the eastern region of the agro-pastoral ecotone in northern China from 2000 to 2023, and a quantitative analysis was performed on the main contributing factors to dynamic changes in soil water erosion.
Results
2
① The multi-year average soil water erosion modulus in the eastern region of the agro-pastoral ecotone was 777.94 t/(km²·a), with most areas dominated by very slight and slight erosion, accounting for 69.3% and 22.9% of the total water erosion area, respectively. ② From 2000 to 2023, the soil water erosion intensity in the study area showed a slight increasing trend, with an increase rate of 0.90 t/(km²·a). Soil water erosion alleviated in the southeastern and northwestern parts of the region, while it intensified in the western part. ③ Areas prone to soil water erosion in the eastern region of the agro-pastoral ecotone were mainly distributed in Chifeng City in the central part, and Zhangjiakou City and Xilinhot in the southwestern part of the study area. ④ The main contributing factor to dynamic changes in soil water erosion in the eastern region of the agro-pastoral ecotone from 2000 to 2023 was the vegetation cover management factor, with an average contribution rate of 64.18%. The combined effects of three factors (vegetation cover management factor, soil and water conservation measure factor, and rainfall erosivity factor) accounted for 23.12%. The average contribution rates of soil and water conservation measure factor and the rainfall erosivity factor were 10.57% and 2.13%, respectively. There were strong interactions among parameters of the RUSLE model, and the combined effects of multiple factors contributed significantly to the dynamic changes in water erosion in the study area.
Conclusion
2
From 2000 to 2023, soil water erosion in the eastern region of the agro-pastoral ecotone in northern China was generally stable. During the study period, with the increase in vegetation cover and the effective implementation of soil and water conservation measures, the aggravating effect of increased rainfall erosivity on water erosion intensity was alleviated to a certain extent. However, the soil water erosion situation in this region remains relatively severe. Areas with low vegetation cover and those without soil and water conservation measures are the key focus areas for soil erosion control in this region.
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