Objective 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 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 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 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.
文献参数: 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. Citation: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.
NDVI数据是基于MODIS 16 d250 m连续时间序列NDVI和EVI数据产品(MOD13Q1.061 Terra Vegetation Indices 16-Day Global 250 m),经过去云处理,采用最大值合成法合成、重采样生成。本研究使用处理后的2000—2023年逐年度1 km分辨率的NDVI数据计算植被覆盖管理因子。
LiuTao, ZhangXuemei, LinChangcun. Functional analysis of water conservation in Zhungeer banner based on InVEST and FLUS models [J]. Acta Agrestia Sinica, 2023,31(12):3831-3840.
[3]
LiHuichun, GuanQingyu, SunYunfan, et al. Spatiotemporal analysis of the quantitative attribution of soil water erosion in the upper reaches of the Yellow River Basin based on the RUSLE-TLSD model [J]. Catena, 2022,212:106081.
QiuYang, FuBojie, WangYong. Spatiotemporal variation in soil erosion and its relation to environmental factors [J]. Journal of Soil Water Conservation, 2002,16(1):108-111.
ShiZhihua, LiuQianjin, ZhangHanyu, et al. Study on soil erosion and conservation in the past 10 years:Progress and prospects [J]. Acta Pedologica Sinica, 2020,57(5):1117-1127.
CuiMing, CaiQiangguo, FanHaoming. Research progress on the soil erosion in black soil region of northeast China [J]. Research of Soil and Water Conservation, 2007,14(5):29-34.
[10]
RymszewiczA, MocklerE, O’SullivanJ, et al. Assessing the applicability of the revised universal soil loss equation (RUSLE) to Irish catchments [J]. Proceedings of the International Association of Hydrological Sciences, 2015,367:99-105.
[11]
GaoGuangyao, LiangYue, LiuJianbo, et al. A modified RUSLE model to simulate soil erosion under different ecological restoration types in the loess hilly area [J]. International Soil and Water Conservation Research, 2024,12(2):258-266.
[12]
Ed-daoudyL, LahmamN, BenmansourM, et al. Hydric erosion rates in Raouz watershed, Morocco:RUSLE, GIS, and remote sensing [J]. Remote Sensing Applications:Society and Environment, 2023,32:101056.
[13]
TianPei, ZhuZhanliang, YueQimeng, et al. Soil erosion assessment by RUSLE with improved P factor and its validation:Case study on mountainous and hilly areas of Hubei Province, China [J]. International Soil and Water Conservation Research, 2021,9(3):433-444.
[14]
FengTeng, ChenHongsong, PolyakovV O, et al. Soil erosion rates in two karst peak-cluster depression basins of northwest Guangxi, China:Comparison of the RUSLE model with 137Cs measurements [J]. Geomorphology, 2016,253:217-224.
WangJing’ai, XuXia, LiuPeifang. Landuse and land carrying capacity in ecotone between agriculture and animal husbandry in northern China [J]. Resources Science, 1999,21(5):19-24.
[17]
郑粉莉.东北黑土区复合土壤侵蚀特征及其防治[M].北京:科学出版社,2021.
[18]
ZhengFenli. Characteristics and prevention of compound soil erosion in black soil region of Northeast China [M]. Beijing:Science Press, 2021.
ShiPeijun, WangJing’ai. Statistical analysis of aeolian sand grain size in arid and semi-arid sandy areas of China [J]. Journal of Inner Mongolia Normal University, 1986,15(4):12-21.
ZhangYing, LiaoChang, JiangQinghu, et al. Response of soil erosion to land use change in Dangjiangkou Reservoir area [J]. Bulletin of Soil and Water Conservation, 2017,37(1):104-111.
ZhouDaowei, LuWenxi, XiaLihua, et al. Grassland degradation and soil erosion in the eastern ecotone between agriculture and animal husbandry in northern China [J]. Resources Science, 1999,21(5):57-61.
[25]
RenardK G, FosterG R, WeesiesG A, et al. Predicting soil erosion by water: A guide to conservation planning with the Revised Universal Soil Loss Equation (RUSLE) [J]. Journal of Soil and Water Conservation, 1997,52(3):189-199.
ZhangWenbo, XieYun, LiuBaoyuan. Rainfall erosivity estimation using daily rainfall amounts [J]. Scientia Geographica Sinica, 2002,22(6):705-711.
[28]
谢云,刘宝元,章文波.侵蚀性降雨标准研究[J].水土保持学报,2000,14(4):6-11.
[29]
XieYun, LiuBaoyuan, ZhangWenbo. Study on standard of erosive rainfall [J]. Journal of Soil Water Conservation, 2000,14(4):6-11.
[30]
张科利,彭文英,杨红丽.中国土壤可蚀性值及其估算[J].土壤学报,2007,44(1):7-13.
[31]
ZhangKeli, PengWenying, YangHongli. Soil erodibility and its estimation for agricultural soil in China [J]. Acta Pedologica Sinica, 2007,44(1):7-13.
[32]
LiuB Y, NearingM A, ShiP J, et al. Slope length effects on soil loss for steep slopes [J]. Soil Science Society of America Journal, 2000,64(5):1759-1763.
CaiChongfa, DingShuwen, ShiZhihua, et al. Study of applying USLE and geographical information system IDRISI to predict soil erosion in small watershed [J]. Journal of Soil Water Conservation, 2000,14(2):19-24.
ZhaoDongying, MengZhongju, MengRuibing, et al. Dynamic change characteristics and driving forces of vegetation cover in the Ulan Buhe Desert along the Yellow River [J]. Arid Zone Research, 2024,41(4):639-649.
[37]
Sobol’I M. Global sensitivity indices for nonlinear mathematical models and their Monte Carlo estimates [J]. Mathematics and Computers in Simulation, 2001,55(1/2/3):271-280.
ZhuWanjing, WangKeqin, SongYali, et al. Temporal and spatial dynamics of soil erosion and its influencing factors in Yunlong County, northwest Yunnan Province from 2000 to 2020 [J]. Journal of Soil and Water Conservation, 2025,39(2):378-389.
ShiXiaopeng, GouHeran, HeShuqin, et al. Soil anti-erosion and anti-scouring effects of two types of urban green spaces and factors influencing them in Wenjiang District, Chengdu City [J]. Bulletin of Soil and Water Conservation, 2024,44(4):117-125.
ZhangYing, NiuJianzhi, XieBaoyuan, et al. Dynamics mechanism of the effect of forest vegetation on hill-slop water erosion [J]. Acta Ecologica Sinica, 2008,28(10):5084-5094.
ZhangDandan, WangDongmei, XinZhongbao, et al. Preliminary study of runoff reduction and sediment removal by grass strips in riparian zone, Li River [J]. Acta Ecologica Sinica, 2016,36(21):6985-6993.
ZhangLongqi, JiaGuodong, XiangrongLü, et al. Research of soil erosion thresholds on the lower slopes of different vegetation cover in typical areas of Loess Plateau [J]. Journal of Soil and Water Conservation, 2023,37(2):187-198.
TangGuoan. Progress of DEM and digital terrain analysis in China [J]. Acta Geographica Sinica, 2014,69(9):1305-1325.
[50]
YangHuimin, ZouXueyong, WangJing’ai, et al. An experimental study on the influences of water erosion on wind erosion in arid and semi-arid regions [J]. Journal of Arid Land, 2019,11(2):208-216.