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[1]ZHOU Lin,XU Wucheng,YIN Yixing.Temporal and Spatial Variations of Rainfall Erosivity in Sichuan Province in Recent 61 Years[J].Research of Soil and Water Conservation,2018,25(04):8-14.

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Temporal and Spatial Variations of Rainfall Erosivity in Sichuan Province in Recent 61 Years

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 25 Number of periods: 2018 04 Page number: 8-14 Column: Public date: 2018-06-13

Title:: Temporal and Spatial Variations of Rainfall Erosivity in Sichuan Province in Recent 61 Years

Author(s):: ZHOU Lin¹, XU Wucheng¹, YIN Yixing²; 1. College of Land and Resources, China West Normal University, Nanchong, Sichuan 637009, China;
2. College of Hydrometeorology, Nanjing University of Information Science and Technology, Nanjing 210044, China

Keywords:: rainfall erosivity; R values; daily rainfall; Sichuan Province

CLC:: S157.1

DOI:: -

Abstract:: Based on the daily rainfall data of 22 meteorological stations in Sichuan Province and its neighboring provinces from 1955 to 2015, using Zhang Wenbo’s half-month erosivity model of daily rainfall, ordinary Kriging spatial interpolation and analysis methods which include coefficient of variation, anomaly percentage, trend coefficient and climate tendency, we comprehensively analyzed the spatial and temporal variation trend of rainfall erosivity in Sichuan Province. It turned out that the rainfall erosivity of Sichuan Province was gradually decreasing from southeast to northwest. The spatial distribution of average annual rainfall erosivity was nearly the same as that of annual rainfall and erosive rainfall, but the spatial distribution characteristics of R values were closer to the erosive rainfall. The R value in Sichuan Basin was larger compared with that in the Mountains Area of Southwest Sichuan and the West Sichuan Plateau. The interannual variation of rainfall erosivity and the interannual change law of rainfall were almost the same. Over the last 61 years, R values showed an obvious increaisng trend and the annual increase rate was 53.64 MJ·mm/(hm²·h·a). The interannual variability of R value in this region was increasing from south to north, Sichuan Province belonged to medium variation degree(0.278<C_v<0.686). The rainfall erosivity changed significantly in a unimodal distribution within the year and R values mainly concentrated in the period from June to September, with the peak appearing in July. From the aspect of season, the risk of rainfall erosivity was high in summer, low in winter, and relatively smooth in spring and autumn. The variation trend of R value in most areas of Sichuan Province was not significant, mainly concentrated in the western Sichuan Plateau and western Sichuan Basin region, on the contrary, the east Sichuan Basin formed a center area with rainfall erosivity decending in Sichuan Province.

References:: [1] Wischmeier W H, Smith D D. Rainfall energy and its relationship to soil loss[J]. Eos Transactions American Geophysical Union, 1958,39(2):285-291.
[2] 王万忠.黄土地区降雨侵蚀力R指标的研究[J].中国水土保持,1987(12):34-38.
[3] 张宪奎,许靖华,卢秀琴,等.黑龙江省土壤流失方程的研究[J].水土保持通报,1992,12(4):1-10.
[4] 吴素业.安徽大别山区降雨侵蚀力指标研究[J].中国水土保持,1992(2):32-33.
[5] Yu B, Rosewell C J, Yu B, et al. An assessment of a daily rainfall erosivity model for New South Wales[J]. Australian Journal of Soil Research, 1996,34(1):139-152.
[6] Mikhailova E A, Bryant R B, Schwager S J, et al. Predicting rainfall erosivity in Honduras[J]. Soil Science Society of America Journal,1997,61(1):273-279.
[7] Renard K G, Freimund J R. Using monthly precipitation data to estimate the R-factor in the Recived USLE[J]. Journal of Hydrology, 1994,157(1/4):287-306.
[8] 黄炎和,卢程隆,郑添发,等.闽东南降雨侵蚀力R值的研究[J].水土保持学报,1992(4):1-5.
[9] 马良,姜光辉,左长清.江西省50余年来降雨侵蚀力变化的时空分布特征[J].农业工程学报,2009,25(10):61-69.
[10] 章文波,付金生.不同类型降雨资料估算降雨侵蚀力[J].资源科学,2003,25(1):35-41.
[11] 陈东东,程路,栗晓玮,等.基于地统计学的四川省降雨侵蚀力时空分布特征[J].生态学杂志,2014,33(1):206-213.
[12] 刘斌涛,陶和平,宋春风,等.我国西南山区降雨侵蚀力时空变化趋势研究[J].地理科学进展,2017,27(5):499-509.
[13] 刘斌涛,陶和平,宋春风,等.基于重心模型的西南山区降雨侵蚀力年内变化分析[J].农业工程学报,2012,28(21):113-120.
[14] 李林育.四川盆地丘陵区降雨侵蚀与输沙特征[D].北京:中国科学院大学,2009.
[15] 史东梅,卢喜平,蒋光毅.紫色丘陵区降雨侵蚀力简易算法的模拟[J].农业工程学报,2010,26(2):116-122.
[16] 付金霞,张鹏,郑粉莉,等.河龙区间近55 a降雨侵蚀力与河流输沙量动态变化分析[J].农业机械学报,2016,47(2):185-192.
[17] 章文波,谢云,刘宝元.利用日雨量计算降雨侵蚀力的方法研究[J].地理科学,2002,22(6):705-711.
[18] 谢云,刘宝,章文波.侵蚀性降雨标准研究[J].水土保持学报,2000,14(4):6-11.
[19] 陈学兄.基于遥感与GIS的中国水土流失定量评价[D].陕西杨凌:西北农林科技大学,2013.
[20] 关颖慧.长江流域极端气候变化及其未来趋势预测[D].陕西杨凌:西北农林科技大学,2015.
[21] 刘斌涛,陶和平,宋春风,等.1960-2009年中国降雨侵蚀力的时空变化趋势[J].地理研究,2013,32(22):245-256.
[22] 孙佳.47年来石羊河流域气候变化趋势及突变分析[D].兰州:兰州大学,2008.
[23] 王超.四川省降雨侵蚀力时空分布特征分析[J].地理空间信息,2017,15(2):111-114.
[24] 段文明,穆兴明,王飞,等.嘉陵江流域降雨侵蚀力时空变化分析[J].水土保持通报,2012,32(5):182-185.
[25] 孔祥东,刘武林,邓玉林,等.基于日降雨量计算川北深丘低山区降雨侵蚀力初步研究[J].中国水土保持,2007(5):29-31.
[26] 李玉泉,徐学军,曾致远,等.基于日雨量的降雨侵蚀力模型研究[J].水利建筑工程学报,2007,5(2):12-34.
[27] 张家其,龚箭,吴宜进.基于日降雨数据的湖北省降雨侵蚀力初步分析[J].长江流域资源与环境,2014,23(2):274-280.
[28] 文博.四川省干旱时空分布特征研究[D].成都:四川师范大学,2014.
[29] 李川,陈静,朱燕君.川西高原近五十年气候变化的初步研究[J].高原气象,2003,22(S1):138-144.
[30] 杜华明,延军平.四川省气候变化特征与旱涝区域响应[J].资源科学,2013,35(12):2491-2500.
[31] 齐冬梅,李跃清,陈永仁,等.近50年四川地区干旱时空变化特征研究[J].高原气象,2011,30(5):1170-1179.
[32] 章文波,谢云,刘宝元.中国降雨侵蚀力空间变化特征[J].山地学报,2003,21(1):33-40.
[33] 任小玢,董治宝,周正朝.近50年来四川盆地降水日数的时空变化特征[J].水土保持通报,2012,32(4):65-70.

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