广西典型石漠化区旱涝灾害分布特征及防御对策-气象研究与应用

文章信息/Info

Title:: The distribution characteristics and defense strategies of droughts and floods of typical stony desertification area in Guangxi

作者:: 黄雪松¹; 陆虹¹; 廖雪萍²; 黄卓¹; 谢敏¹; 1. 广西气候中心, 广西南宁 530022;
2. 广西气象减灾研究所, 广西南宁 530022

Author(s):: HUANG Xue-song¹; LU Hong¹; LIAO Xue-ping²; HUNAG Zhuo¹; XIE Min¹; 1 Guangxi Climate Center, Nanning, Nanning, Guangxi 530022;
2 Guangxi Meteorological Society, Nanning, Guangxi 530022

Keywords:: typical stony desertification area in Guangxi; droughts and floods; countermeasure

摘要:: 通过利用石漠化区29个县的1961~2010a降水观测资料,分析近50a来石漠化区干旱和洪涝特征及灾害影响;在分析自然条件、社会状况和石漠化现状的基础上,提出旱涝灾害防御对策。结果表明,广西典型石漠化地区春旱、冬旱发生频率自西向东递减,夏旱、秋旱频率东部大、西部小;洪涝多出现在6~8月;洪涝频率高值区分布在桂东北山区和桂西山区。对广西典型石漠化区旱涝灾害的治理,可根据典型石漠化区自然条件和旱涝灾害分布特征,采取对岩溶石山型(峰丛洼地区)区和岩溶峰林型(平原与谷地区)区分区治理的方式,通过水利工程建设措施和生态环境措施提高石漠化区旱涝防范能力,减缓石漠化进程。

Abstract:: Based on the meteorological observation rainfall data of 29 countries of typical stony desertification area in Guangxi from 1961 to 2010, the characteristics and influences of droughts and floods during the past 50 years were analyzed, the countermeasure for prevention and control of droughts and floods were put forward by the analysis of natural conditions,social condition and the situation of stony desertification. The results show that:the appearing frequencies of spring drought and winter drought in typical stony desertification area decrease progressively from the west to the east, while the appearing frequencies of summer drought and autumn drought were higher in the east and lower in the west. In addition, the foods often occurred from June to August and the high-frequencies of floods appeared in the northeast and the west mountainous areas in Guangxi. According to the natural conditions and characteristic of droughts and floods, different countermeasures were adopted for karsts mountain areas (peak cluster depression area) and karts peak forest (plains and valleys) by constructing water conservancy project and ecological environmental management to improve the ability of preventing droughts and floods and slowing the spread of stony desertification.