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1822号“山竹”台风对广东省降雨侵蚀力的影响
陈世发1, 田广增1, 李航飞1, 张清军1, 白永会2, 王丽园3
1.韶关学院 旅游与地理学院, 广东 韶关 512005;2.东华理工大学 地球科学学院, 江西 南昌 330013;3.河南大学 环境与规划学院, 河南 开封 475004
摘要:
[目的]探讨台风强降雨对降雨侵蚀力的影响,为土壤侵蚀的预测预防与治理提供一定的依据。[方法]利用2018年“山竹”台风登陆广东省带来的强降雨,以小时降雨侵蚀力模型为基础,计算“山竹”台风期间广东省降雨侵蚀力及时空分布。[结果]①广东省降雨侵蚀力与台风路径相关,在2018年9月15日粤东地区降雨侵蚀力最大,而16日与17日在粤西地区的降雨侵蚀最大;②山竹台风期间,广东省降雨侵蚀力呈现以阳春市为中心,向两侧降低,特别是在粤北和粤东地区的降雨侵蚀力最低;③降雨量大的站点,降雨侵蚀力也较大,但并不是一一对应的关系,雨强与降雨动能也是影响降雨侵蚀力的重要因素。[结论]台风带来的强降雨影响广东省15—17日降雨侵蚀力分布,台风移动路径决定降雨侵蚀力的大小。
关键词:  降雨侵蚀力  热带气旋  土壤侵蚀  广东省  雨强
DOI:10.13961/j.cnki.stbctb.2019.03.038
分类号:S157.1;K903
基金项目:广东省哲学社会科学共建项目“气候变化背景下的粤北山区贫困农户生计脆弱性与适应力研究”(GD18XGL55);广东省教育厅青年创新人才项目(2015KQNCX148);广东省哲学社会科学规划项目(GD17CGL13);广东省教育厅项目(2017WTSCX106)
Impacts of Typhoon “Mangosteen” No. 1822 on Rainfall Erosivity in Guangdong Province
Chen Shifa1, Tian Guangzeng1, Li Hangfei1, Zhang Qingjun1, Bai Yonghui2, Wang Liyuan3
1.College of Tourism and Geography, Shaoguan University, Shaoguan, Guangdong 512005, China;2.College of Earth Sciences, East China University of Technology, Nanchang, Jiangxi 330013, China;3.College of Environment and Planning, He'nan University, Kaifeng, He'nan 475004, China
Abstract:
[Objective] The impacts of heavy rainfall caused by typhoon on rainfall erosivity were explored in order to provide a theoretical basis for the prediction, prevention and control of soil erosion.[Methods] Based on the hourly rainfall erosivity model, the temporal and spatial distribution of rainfall erosivity during typhoon Mangosteen landing in Guangdong Province in 2018 was calculated.[Results] ① The rainfall erosivity in Guangdong Province was related to the typhoon path. On the 15th, September 2018, the rainfall erosivity was the highest in the eastern part of Guangdong Province, while the largest rainfall erosivity in the west was occurred on the 16th and 17th; ② Rainfall erosivity in Guangdong Province tended to be centered arond Yangchun City and decreases to both sides during typhoon Mangosteen, especially in Northern and Eastern Guangdong Province; ③The stations with large rainfall also showed a large rainfall erosivity, but it was not a one-to-one correspondence. Rain strength and rainfall kinetic energy were also important factors affecting rainfall erosivity.[Conclusion] The heavy rainfall caused by typhoon affected the distribution of rainfall erosivity in Guangdong Province from 15th to 17th September 2018, and the path of typhoon movement determined the magnitude of rainfall erosivity.
Key words:  rainfall erosivity  tropical cyclones  soil erosion  Guangdong Province  rainfall intensity