Responses of flood peaks to land use and landscape patterns under extreme rainstorms in small catchments-A case study of the rainstorm of Typhoon Lekima in Shandong,China
作者机构：Institute of Soil and Water ConservationNorthwest A&F UniversityYangling712100Shaanxi ProvinceChina Key Laboratory of the Loess Plateau Soil Erosion and Water Loss Process and ControlMinistry of Water ResourcesZhengzhou450003Henan ProvinceChina Institute of Soil and Water ConservationChinese Academy of Sciences and Ministry of Water ResourcesYangling712100Shaanxi ProvinceChina China Institute of Water Resources and Hydropower Resea
出 版 物：《International Soil and Water Conservation Research》 (国际水土保持研究（英文）)
年 卷 期：2022年第10卷第2期
页 面：228-239页
核心收录：
学科分类：082802[工学-农业水土工程] 090707[农学-水土保持与荒漠化防治] 0907[农学-林学] 08[工学] 0828[工学-农业工程] 09[农学] 0815[工学-水利工程]
基 金：the National Natural Science Foundation of China[No.41807067,No.41771558] the Youth Talent Lift Project of China Association for Science and Technology[No.2019-2021QNRC001] the open Project Fund of Key Laboratory of the Loess Plateau Soil Erosion and Water Loss Process and Con-trol,Ministry of Water Resources[No.HTGY202004]
主 题：Extreme rainstorm Flood peak intensity Flood peak sensitivity Land use Landscape pattern
摘 要：Investigations of the formation mechanisms of flood peaks in small catchments facilitate flood prediction and disaster prevention under extreme ***,there have been few studies on the re-sponses of flood peaks to land use landscape patterns using field surveys during extreme rainstorm *** on field data from 17 small catchments near the rainstorm center of Typhoon Lekima,7 landscape indices were *** flood peak and its sensitivity to the land use landscape were investigated by combining remote sensing interpretation and related *** conclusions are as follows:(1)The peak discharge of the small catchment was 2.36e56.50 m3/s,the peak modulus was 8.00 e48.89 m3/(s$km2),and the flood index K ranged from 3.61 to 4.55.(2)Under similar rainfall conditions,the flood peak modulus,K and the proportion of sloping cropland had significantly positive correlations(p0.05).The flood peak modulus was significantly negatively correlated with the proportion of forest-grassland and terrace(p0.05),and K and the proportion of forest-grassland and terraced land exhibited a negative correlation.(3)The flood peak modulus and K were positively correlated with the landscape fragmentation.(4)The sensitivities of small catchments to floods were evaluated to be moderate compared to K values from other *** ability of small catchments to cope with extreme rain-storms can be improved by increasing the areas of forest-grassland,and terraces and reducing landscape *** results could be applied to provide a basis for land use planning and support for the response against disasters caused by extreme floods.
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