南流江流域降水序列周期特征及变化趋势

发布时间：2018-05-03 22:32

本文选题：降水序列 + 周期特征　；参考：《南水北调与水利科技》2016年02期

【摘要】：降水序列的变化规律和变化趋势是流域防洪抗旱时需要考虑的重要问题。以北部湾经济区南流江流域为例,尝试利用小波分析和R/S分析方法研究年降水量周期特征和变化趋势。研究结果表明:在短周期范围内,南流江上游流域具有3~8a的主周期,未来年降水量出现减少的趋势;中游流域具有3~8a的主周期,未来年降水量出现增加的趋势;下游流域具有5~8a的主周期,未来年降水量出现增加的趋势。因此,未来短期内南流江干流的防洪重心主要在于中下游流域,需要预防突发性降雨。
[Abstract]:The variation and trend of precipitation sequence are important issues to be considered in flood control and drought resistance in the basin. Taking the south flow river basin in the Beibu Gulf Economic Region as an example, the wavelet analysis and R/S analysis are used to study the periodic characteristics and change trend of the annual precipitation. The results show that in the short period, the upper reaches of the South Stream River have a 3~8a In the main period, the future annual precipitation has a tendency to decrease; the middle reaches of the river basin has the main cycle of 3~8a, the future annual precipitation increases, the downstream basin has the main cycle of 5~8a and the future annual precipitation increase. Therefore, the flood control center of the South River main stream in the future is mainly in the middle and lower reaches of the basin, which needs to be prevented. Hair rain.

【作者单位】：桂林理工大学环境科学与工程学院;
【基金】：国家自然科学基金(41172230/D0213)~~
【分类号】：P333.1

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