Changes of Extreme Precipitation Events in Qinghai Province During 1960--2009

WANG Bao-long; ZHANG Ming-jun; WEI Jun-lin; WANG Shen-jie; MA Qian

您当前的位置：

首页 >

文章列表页 >

Changes of Extreme Precipitation Events in Qinghai Province During 1960--2009

- Changes of Extreme Precipitation Events in Qinghai Province During 1960--2009
- Bulletin of Soiland Water Conservation Vol. 31, Issue 4, Pages: 92-96(2012)
- 作者机构：
  
  1. 西北师范大学地理与环境科学学院,甘肃,兰州,730070
  2. 四川省金科成地理信息技术有限公司,四川,成都,610041
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2012
- 稿件说明：
移动端阅览
WANG Bao-long, ZHANG Ming-jun, WEI Jun-lin, et al. Changes of Extreme Precipitation Events in Qinghai Province During 1960--2009[J]. Bulletin of Soiland Water Conservation, 2012, 31(4): 92-96.
DOI：

WANG Bao-long, ZHANG Ming-jun, WEI Jun-lin, et al. Changes of Extreme Precipitation Events in Qinghai Province During 1960--2009[J]. Bulletin of Soiland Water Conservation, 2012, 31(4): 92-96. DOI：

摘要

利用1960-2009年青海省26个气象台站的降水资料，采用线性倾向估计法、反距离加权法、M—K突变检测等方法，研究了青海省50a来极端降水事件变化的空间分布以及时间变化特征．结果发现，近50a来，青海省极端降水天数、最大的1d和5d降水总量、中雨天数和逐年平均降水强度均表现为增加(强)趋势，只有极端降水天数通过了0.05的置信度检验；各极端降水指数变化趋势存在空间差异，祁连山地区极端降水天数、最大的1d和5d降水总量、中雨天数和逐年平均降水强度增加趋势明显，青海省东部地区增加不明显或呈微弱减少趋势；青海省极端降水事件在0.05的置信度下发生了明显的突变现象，且各极端降水指标与年降水总量有很好的相关性．

Abstract

Based on daily and annual precipitation recorded at twenty-six meteorological stations in Qinghai Province from 1960 to 2009

regression analysis

inverse distance weighted method and Mann-Kendall method were employed to analyze the spatial and temporal variability in extreme precipitation events. The re-suits indicated that extreme precipitation days

annual maximum 1 d precipitation

annual maximum consecu-tive 5 d precipitation

very heavy precipitation days and daily rainfall intensity showed increasing trends in the recent 50 years

and only the extreme precipitation days were significant at the 0.05 level. The spatial change of precipitation extreme events in the study area showed that extreme precipitation days

annual max-imum 1 d precipitation

annual maximum consecutive 5 d precipitation

very heavy precipitation days and dai-ly rainfall intensity in Qilian Mountains had statistically increasing trends while they increased or decreased insignificantly in eastern region. In addition

it was also found that abrupt changes presented in precipitation extreme events at the 0.05 level. At the same time

there were significant correlations between annual total precipitation and different precipitation indices.

关键词

Keywords

references

Views

1170

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Ecological environment quality evolution and its driving factors in Qinghai Province from 2000 to 2024

Soil erosion changes and driving factors in Qinghai Province from 2004 to 2023

Spatial and temporal evolution of ecosystem health and scenarios modeling in Qinghai Province based on land use change

Phosphorus content and its spatial heterogeneity in paddy soil with different parent materials at Jianghan Plain——Taking Jingzhou District in Hubei Province as an example

Spatial Distribution of Soil Nutrient on Sloping Land With Changed Land Utilization Ways in Suburbs

Related Author

Nie Xuemin

Wang Lu

Ma Yanli

Ma Chao

Lu Ziyu

Li Long

Chang Xiuhong

Zhu Anjing

Related Institution

Qinghai Remote Sensing Center for Natural Resources

University of Chinese Academy of Sciences

Gansu Provincial Key Laboratory of Remote Sensing， Northwest Institute of Eco-Environment and Resources，Chinese Academy of Sciences

Qinghai Key Laboratory of Eco-Environment Monitoring and Assessment， Qinghai;Province Ecological and Environmental Monitoring Center

Research Center on;Soil and Water Conservation， Ministry of Water Resources， Chinese Academy of Sciences， Yangling

⁰