林内穿透雨收集器与雨量计的选配与模拟研究

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国家科技期刊平台
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中文摘要：通过选取0。5 mm和1。0 mm分辨力的2种翻斗雨量计，换算穿透雨收集器3种规格承雨口尺寸，设定五级穿透雨强，建立蠕动泵转速-流量回归方程，对不同穿透雨强的穿透雨量模拟。结果表明:392。5 mm × 200 mm尺寸穿透雨收集器配置0。5 mm和1。0 mm 2种分辨力雨量计，均可达到单点准确观测;但承雨口面积较小，单点代表性较差。785 mm × 200 mm尺寸配置0。5 mm分辨力雨量计，仅能单点准确观测1。0 mm/min穿透雨强以下的穿透雨量;配置1。0 mm分辨力雨量计，在0。0～3。0 mm/min穿透雨强范围内可以单点观测，但需要对穿透雨强大于2。0 mm/min部分的穿透雨量进行误差修正。1570 mm × 200 mm尺寸配置1。0 mm分辨力雨量计，在0。0～2。0 mm/min穿透雨强下可正常观测，对于1。0～3。0mm/min穿透雨强部分的穿透雨量需进行误差修正。综合分析，大暴雨发生较少的地区，集水器承雨口尺寸1570 mm × 200 mm配置1。0 mm分辨力雨量计，穿透雨量分辨力0。1mm，具有单点最大代表性，基本满足观测精度要求，兼顾仪器购置经济性，为最适宜配置。若条件许可，定制翻斗容量更大的流量计，观测稳定性和准确性会进一步提高。

外文标题：Match Analysis and Simulation Verification of Throughfall Collector and Tipping Bucket Rain Gauges

外文摘要：In this study,2 types of tipping-bucket rain gauges with resolutions of 0.5 mm and 1.0 m,raindrop collectors with 3 different area sizes,and 5 simulated throughfall intensities were employed.Additionally,the speed-flow regression equation of the peristaltic pump was developed to replicate penetrating throughfall at differ-ent intensities.The results demonstrated that the collector with the size of 200 mm × 392.5 mm was equipped with 0.5 mm and 1.0 mm resolution rain gauges,both of which can achieve accurate single point observation,but the area was small and the representation of single point was poor.The size of 200 mm × 785 mm was equipped with the rain gauge of 0.5 mm,which could only observe the throughfall below 1.0 mm/min accurately.With a rain gauge of 1.0 mm,which could be observed within the range of intensities from 0.0 mm/min to 3.0 mm/min,but error correction was required for throughfall stronger than 2.0 mm/min.The size of 200 mm × 1570 mm was equipped with the rain gauge of 1.0 mm,which could be observed normally under the intensities from 0.0 mm/min to 2.0 mm/min,the error correction should be carried out for the intensities from 1.0 mm/min to 3.0 mm/min.Based on comprehensive analysis,the collector measuring 200 mm × 1 570 mm and equipped with a rain gauge of 1.0 mm demonstrated the highest level of accuracy for single point representation while meeting observation re-quirements and remaining cost-effective,thus making it the most suitable configuration.If flow meters with lar-ger tipper volumes customized,observation stability and accuracy of throughfall will be further improved.

外文关键词：

forest hydrologyperistaltic pumpthroughfallprecipitation distributiontipping bucket rain gauge

作者：

郑路、尤业明、李朝英、李华、刘士玲、闵惠琳

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作者单位：

中国林业科学研究院热带林业实验中心,广西崇左 532600

广西友谊关森林生态系统国家定位观测研究站,崇左凭祥友谊关森林生态系统广西野外科学观测研究站,广西崇左 532600

广西大学林学院,广西森林生态与保育重点实验室,广西南宁 530004

关键词：

森林水文蠕动泵穿透雨量降水分配翻斗雨量计

基金：

广西科技基地和人才专项崇左凭祥友谊关森林生态系统广西野外科学观测研究站科研能力建设项目广西林业科技推广示范项目广西林业科技推广示范项目

项目编号：

桂科AD20159094桂科22-035-130-03桂林科研[2022]第27号2023GXLK45

出版年：

2024

DOI：

10.11929/j.swfu.202305043

西南林业大学学报

西南林业大学

西南林业大学学报

CSTPCD北大核心

影响因子：0.773

ISSN：2095-1914

年,卷(期)：2024.44(7)

参考文献量21