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[1]ZHONG Xiaomin,ZHONG Keyuan,GAO Yiting,et al.Effect of Land Use Change Caused by Sub-watershed Division in SWAT Model on Runoff and Sediment Simulation[J].Research of Soil and Water Conservation,2022,29(06):52-58.

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Effect of Land Use Change Caused by Sub-watershed Division in SWAT Model on Runoff and Sediment Simulation

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 29 Number of periods: 2022 06 Page number: 52-58 Column: Public date: 2022-10-20

Title:: Effect of Land Use Change Caused by Sub-watershed Division in SWAT Model on Runoff and Sediment Simulation

Author(s):: ZHONG Xiaomin^1,2,3, ZHONG Keyuan³, GAO Yiting⁴, LI Yulian¹, TU Zhe³, HUANG Li³, SHUAI Hong^1,2; (1.School of Geographic Sciences, Hunan Normal University, Changsha 410081, China; 2.Hunan Key Laboratory of Geospatial Big Data Mining and Application, Hunan Normal University, Changsha 410081, China; 3.School of Geography and Environmental Engineering, Gannan Normal University, Ganzhou, Jiangxi 341000, China; 4.Northwest Institute of Eco-Environment and Resources, University of Chinese Academy of Sciences, Lanzhou 730000, China)

Keywords:: SWAT; land use; watershed discretization; runoff; sediment

CLC:: P333; F301.24

DOI:: -

Abstract:: In order to reveal the effect of land use change caused by the calculation of unit division in hydrological models on simulation result, eleven scenarios including 4 000, 3 200, 2 000, 1 500, 1 100, 800, 400, 200, 100, 50, 25 hm² of the sub-watershed thresholds, were used to analyse the effect of land use spatial discretization on runoff and sediment simulation with the SWAT model. Terrain and soil data were input with a single terrain and soil data-set to fix the effect of terrain and soil data spatial discretization. The results showed that:(1)With the increasing number of sub-watersheds, the forestland area increased at first and then decreased, and the area of the forestland was higher than that of the actual forestland area in all scenarios; however, the area of cultivated land decreased with the increasing of the land use discretization degree, moreover, the area of water, grassland and construction land increased and gradually approached the actual area;(2)The spatial discretization of land use led to the decrease of annual average runoff yield(1.85%)and sediment yield(65.84%), which had a more significant effect on sediment yield than runoff;(3)The land use spatial discretization resulted in a significant decrease in the peak value of sediment in flood processes, and resulted in a significant decrease in the sediment yield of maximum one-day, continuous maximum five-day and continuous maximum seven-day(p<0.01)with the increasing of the discretization degree. In conclusion, sub-watershed division significantly changed the distribution of land use in the basin, and then induced the change of runoff and sediment yield parameters, finally, it led to the change of runoff and sediment simulation.

References:: [1] 徐宗学,赵捷.生态水文模型开发和应用:回顾与展望[J].水利学报,2016,47(3):346-354.
[2] 万荣荣,杨桂山.流域LUCC水文效应研究中的若干问题探讨[J].地理科学进展,2005,24(3):25-33.
[3] 陆志翔,杨永刚,邹松兵,等.汾河上游土地利用变化及其水文响应研究[J].冰川冻土,2014,36(1):192-199.
[4] 李爱民.分布式水文模型研究进展[J].中国水运,2016,16(7):171-172.
[5] Liu C M, Li D F, Tian Y, et al. An application study of DEM based distributed hydrological model on macroscale watershed[J]. Progress in Geography, 2003,22(5):437-445.
[6] Chen X H, Tu X J, Xie P. Progresses in the research of human induced variability of hydrological elements[J]. Advances in Earth Science, 2010,25(8):800-811.
[7] 黄志霖,田耀武,肖文发,等.三峡库区黑沟流域AnnAGNPS参数空间聚合效应[J].生态学报,2009,29(12):6681-6690.
[8] 史晓亮,李颖,赵凯,等.流域离散化对分布式水文模型径流模拟的影响[J].中国农业气象,2013,34(1):30-36.
[9] 郝芳华,张雪松,程红光,等.分布式水文模型亚流域合理划分水平刍议[J].水土保持学报,2003,17(4):75-78.
[10] Fitzhugh T W, Mackay D S. Impacts of input parameter spatial aggregation on an agricultural nonpoint source pollution model[J]. Journal of Hydrology, 2000,236(1/2):35-53.
[11] 胡连伍,王学军,罗定贵,等.不同子流域划分对流域径流、泥沙、营养物模拟的影响:丰乐河流域个例研究[J].水科学进展,2007,18(2):235-240.
[12] Jha M, Gassman P W, Secchi S, et al. Effect of watershed subdivision on SWAT flow, sediment, and nutrient predictions[J]. Jawra Journal of the American Water Resources Association, 2004,40(3):811-825.
[13] Pradhanang S M, Briggs R D. Effects of critical source area on sediment yield and streamflow[J]. Water and Environment Journal, 2014,28(2):222-232.
[14] 李曼曼,韩会玲,刘晓英,等.SWAT模型最佳子流域划分方案研究:以云南洱海流域为例[J].中国农业气象,2012,33(2):185-189.
[15] 马放,姜晓峰,王立,等.基于SWAT模型的亚流域划分方法研究[J].中国给水排水,2015,31(7):53-57.
[16] 卢文喜,伊燕平,张蕾,等.不同亚流域划分数量对SWAT模型模拟结果的影响[J].水电能源科学,2010,28(10):23-25.
[17] 张雪松,郝芳华,程红光,等.亚流域划分对分布式水文模型模拟结果的影响[J].水利学报,2004,35(7):119-123,128.
[18] Chen E, Mackay D S. Effects of distribution: based parameter aggregation on a spatially distributed agricultural nonpoint source pollution model[J]. Journal of Hydrology,2004,295(1):211-224.
[19] 钟科元,陈兴伟,陈莹,等.地形和土壤/土地利用空间聚合对径流和输沙量影响的AnnAGNPS模拟[J].农业工程学报,2016,32(8):127-135.
[20] 吴倩雯,况润元,张刚华,等.东江源稀土矿区土地利用变化遥感监测研究[J].测绘科学,2019,44(3):51-56.
[21] 吕乐婷,彭秋志,郭媛媛,等.基于SWAT模型的东江流域径流模拟[J].自然资源学报,2014,29(10):1746-1757.
[22] 韩冬冬,朱仲元,宋小园,等.土地覆被和气候变化对锡林河流域径流量的影响[J].水土保持研究,2019,26(2):153-160.
[23] 焦剑,宋伯岩,王世雷,等.基于改进径流曲线数模型的北京密云坡地径流估算[J].农业工程学报,2017,33(21):194-199.
[24] 俱战省,文安邦,严冬春,等.三峡库区小流域修正通用土壤流失方程适用性分析[J].农业工程学报,2015,31(5):121-131.
[25] 喻晓,马孝义,蔡朵朵.基于SWAT模型的合理亚流域划分和径流模拟[J].中国农村水利水电,2017(11):20-25.
[26] 林炳青,陈莹,陈兴伟.SWAT模型水文过程参数区域差异研究[J].自然资源学报,2013,28(11):1988-1999.
[27] Lin B Q, Chen X W, Yao H X. Threshold of sub-watersheds for SWAT to simulate hillslope sediment generation and its spatial variations [J]. Ecological Indicators, 2020,111(1):e106040.
[28] 邱临静,郑粉莉,Yin R S.DEM栅格分辨率和子流域划分对杏子河流域水文模拟的影响[J].生态学报,2012,32(12):3754-3763.
[29] 武海霞,李清雪,孙玉壮,等.子流域划分在时间尺度上对年径流、泥沙及营养物的影响:以漳河上游流域为例[J].中国农村水利水电,2017(12):131-135,144.

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Last Update: 2022-10-20