Acta Geographica Sinica ›› 2023, Vol. 78 ›› Issue (5): 1059-1073.doi: 10.11821/dlxb202305001
• Research on Natural Disasters • Next Articles
CHEN Yuehong1(), XU Congcong1, ZHANG Xiaoxiang1(
), ZHANG Ruojing1, MA Qiang2, LIU Changjun2, REN Liliang1, SHI Kaixin1
Received:
2022-08-29
Revised:
2023-02-12
Online:
2023-05-25
Published:
2023-05-27
Contact:
ZHANG Xiaoxiang
E-mail:chenyh@lreis.ac.cn;xiaoxiang@hhu.edu.cn
Supported by:
CHEN Yuehong, XU Congcong, ZHANG Xiaoxiang, ZHANG Ruojing, MA Qiang, LIU Changjun, REN Liliang, SHI Kaixin. Regionalization of flash floods in China[J].Acta Geographica Sinica, 2023, 78(5): 1059-1073.
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Tab. 1
Indicator system of the flash flood regionalization in China
指标类型 | 指标名称 | 指标描述 | 指标来源 |
---|---|---|---|
下垫面 | 高程 | 区域平均海拔高度(90 m×90 m栅格) | SRTM3 V4.1数据 ( |
高差 | 区域最大和最小高程之差(90 m×90 m栅格) | ||
坡度 | 根据高程数据计算得到(90 m×90 m栅格) | ||
流域相对高程 | 基于高程数据计算的距离最近河道的高程(90 m×90 m栅格) | MERIT Hydro ( | |
植被指数 | 小流域内年度植被指数的平均值 (1 km×1 km栅格) | 2015年度中国植被指数 ( | |
平原、台地、丘陵、小起伏山地、中起伏山地、大起伏山地、极大起伏山地的占比 | 根据地貌图集计算区域内7个地貌类型的占比(1 km×1 km栅格) | 《中华人民共和国地貌图集(1∶100万)》 ( | |
耕地、林地、草地、水域、建设用地、未利用地、海洋占比 | 根据土地利用数据计算区域内7个土地利用类型的占比(1 km×1 km栅格) | 2020年中国土地利用数据(1 km) ( | |
降雨 | 100 a、50 a、20 a、5 a、2 a一遇最大1 h降雨量 | 基于ERA5卫星降水再分析产品,采用皮尔逊III(P-III)曲线[ | ERA5卫星降水再分析产品 ( |
100 a、50 a、20 a、5 a、2 a一遇最大3 h降雨量 | |||
100 a、50 a、20 a、5 a、2 a一遇最大6 h降雨量 | |||
100 a、50 a、20 a、5 a、2 a一遇最大12 h降雨量 | |||
100 a、50 a、20 a、5 a、2 a一遇最大24 h降雨量 | |||
最大1 h、3 h、6 h、12 h、24 h降雨量均值 | 基于ERA5卫星降水再分析产品,统计计算出不同小时级的5个降雨均值指标(0.25°×0.25°栅格) | ||
年均降雨量 | 基于ERA5卫星降水再分析产品,统计年均降雨指标(0.25°×0.25°栅格) |
Tab. 2
The basic information of the first-grade flash flood regionalization in China
区代码 | 名称 | 面积(万km2) | 空间范围 |
---|---|---|---|
I | 东北温带平水— 中易发区 | 89.9 | 该区域为大兴安岭中低山,小兴安岭低山,长白山中低山地,燕山辽西中低山。 |
II | 山东半岛暖温带多水—中易发区 | 7.4 | 该区域主要是山东半岛低山。 |
III | 东南亚热带丰水—高易发区 | 88.6 | 该区域主要分布在东南山地丘陵。东部为浙闽低中山、粤闽中低起伏山和台湾低山,北部为大别山中低山,中部包括湘赣小起伏低山丘陵,西部为湘东中低山地,南部为粤桂低山和海南岛。 |
IV | 西南亚热带多水—高易发区 | 125.3 | 该区域北部为秦巴中低山区,中部为川渝鄂低山丘陵区,南部为云贵高原和桂西北部中低山丘区。 |
V | 青藏高原南部温带平水—中易发区 | 75.4 | 该区域位于青藏高原的南部地区,东部为川西高原和横断山脉,西部为藏东高山区。 |
VI | 青藏高原北部亚寒带干旱—低易发区 | 176.6 | 该区域位于青藏高原的北部地区,北部为南疆阿尔金山和昆仑山高山区,东部主要为青海的大部分高山区,南部主要是喜马拉雅山极大起伏高山区,西部主要为喀喇昆仑山脉大起伏极高山区。 |
VII | 北疆温带干旱— 低易发区 | 41.1 | 该区域位于北疆高山区,北部主要为阿尔泰高山区,南部主要为天山高山地区。 |
VIII | 内蒙古中温带干旱—低易发区 | 33.4 | 该区域位于内蒙古山丘区,东部主要为阴山山脉地区,西部为内蒙古西部低山地区。 |
IX | 黄土高原温带平水—高易发区 | 45.4 | 该区域位于黄土高原区域,东部主要为太行山地区,西部主要为贺兰山和六盘水地区。 |
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