RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN >> 2022, Vol. 31 >> Issue (4): 903-914.doi: 10.11870/cjlyzyyhj202204017

Previous Articles     Next Articles

Sptio-temporal Characteristics of Drought in Jiangxi Based on Index of Continuous Days Without Available Precipitation

WU Shao-qiang1,2,3，TANG Chong-jun2,3,CHEN Xiao-an2,3,ZHENG Tai-hui2,3,HE Xiao-wu1   

  1. (1.College of Land Resources and Environment, Jiangxi Agricultural University,Nanchang 330045,China;2.Jiangxi Institute of 
    Soil and Water Conservation, Nanchang 330029,China;3.Jiangxi Provincial Key Laboratory of Soil and 
    Water Conservation,Nanchang 330029,China)

  • Online:2022-04-20 Published:2022-04-21

PDF (PC)

77

Abstract: Under the background of global climate change, the drought problem induced by uneven rainfall has seriously threatened crop growth and food security. Exploring the drought characteristics of Jiangxi Province provides theoretical references for disaster prevention, drought resistance,and crop growth. Daily precipitation data of 15 standard meteorological stations in Jiangxi Province from 1957 to 2015 were collected.Then,continuous days without available precipitation(Dnp) was adopted as a drought index to calculate drought frequency,drought station ratio,and drought duration days of different seasons.Finally,the spatial distribution characteristics of drought frequency and  inter-annual variation trend of drought station ratio and drought duration days were obtained.In addition, daily drought frequency was introduced to study dynamics change of different stations in Jiangxi Province. The results showed that: (1) summer and autumn droughts occurred frequently in various regions of Jiangxi Province, which commonly occurred from July to November;(2) spring drought mainly occurred in southern Jiangxi, and the areas with high summer droughts were mainly in the Poyang Lake Plain and southern Ganzhou. Only a small part of the province had mild autumn droughts, and most other areas had severe autumn droughts.The winter drought exhibited a gradually increasing trend from north to south.The worst-hit area of drought in Jiangxi Province was Ganzhou,which suffered from severer droughts throughout the year;(3)The whole province and the sub-regions had the same inter-annual change trend. The inter-annual change trend of spring drought and autumn drought showed an increasing trend, and only the drought intensity in southern Jiangxi decreased slightly. The inter-annual change trend of summer showed a decreasing trend. The winter drought showed an increasing trend in covering area,but a sightly reduction in intensity. The drought situation in southern Jiangxi showed an overall weakening trend, and only the winter drought intensity showed an increasing trend.

No related articles found!
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
[1] GUO Zheng, , DONG Ping, , LU Yuqi, , , HUANG Qunfang, MA Yinyi. Analysis on the Evolution and Influence Factors of Yangtze River delta container port system[J]. RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN, 2018, 27(07): 1340 .
[2] WU Wenqi, , LUO Xian, , HUANG Wei, LI Yungang, . Research on the Water Resources Carrying Capacity and Its Temporal——Spatial Distribution Characteristics in Yunnan Province, China[J]. RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN, 2018, 27(07): 1385 .
[3] WANG Hui, , YAN Junping, , WANG Pengtao, WU Yaqun, . Spatial Pattern of Economic Disparities in the Multiethnic Region of China[J]. RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN, 2018, 27(07): 1390 .
[4] YANG Hong, , LI Huilin , LU Lu . Spatial Distribution of AmmoniaOxidizing Microorganism in Surface Water and Sediment in Jialing River (Nanchong Section) and Their Relationship with Environmental Factors[J]. RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN, 2018, 27(08): 1836 .
[5] LI En-kang, LU Yu-qi, WANG Yi, HUANG Qun-fang, GUO Zheng. Impact of Urbanization on Institutional Transformation：Analysis of Impulse Response Function Based on 13 Cities In Jiangsu Province[J]. RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN, 2018, 27(09): 1919 -1927 .
[6] WEI Guo-en, ZHU Xiang, HE Qing-yu. Study on the Evolution Characteristics and Countermeasures of Spatial Evolvement Relation in Urbanagglomeration around Changsha-Zhuzhou-Xiangtan[J]. RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN, 2018, 27(09): 1958 -1967 .
[7] CHUO Mingying, MA Jun, LIU Defu, YANG Zhengjian . Numerical Simulation of the Influence of Curtain Weirs on Characteristics of Water Temperature in Xiangxi Bay[J]. RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN, 2018, 27(09): 2101 -2113 .
[8] . [J]. RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN, , (): 0 .
[9] FENG Chang, MAO De-hua, ZHOU Hui, CAO Yan-min, HU Guang-wei. Game Modeling and Application Analysis of Green Water Management in the River Basin[J]. RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN, 2018, 27(11): 2505 -2517 .
[10] TIAN Peng, LI Jia-lin, , SHI Xiao-li, WANG Li-jia, LIU Rui-qing. Spatial and Temporal Changes of Land Use Pattern and Ecological Risk Assessment in Zhejiang Province[J]. RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN, 2018, 27(12): 2697 -2706 .
Copyright © RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN, All Rights Reserved.
Powered by Beijing Magtech Co. Ltd