| 自动连续称重式集沙仪设计及野外应用 |
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| 引用本文： | 崔雅臻,郭中领,常春平,王仁德,李继峰.自动连续称重式集沙仪设计及野外应用[J].中国沙漠,2018,38(6):1166-1174. |
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| 作者姓名： | 崔雅臻 郭中领 常春平 王仁德 李继峰 |
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| 作者单位： | 1. 河北师范大学 资源与环境科学学院/河北省环境演变与生态建设省级重点实验室, 河北 石家庄 050024;2. 河北省科学院 地理科学研究所/河北省地理信息开发应用工程技术研究中心, 河北 石家庄 050011 |
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| 基金项目： | 国家自然科学基金项目（41877066，41330746）；河北省自然科学基金项目（D2018205192，D2018205212）；河北省普通高等学校青-拔尖人才计划项目（BJ2016030） |
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| 摘 要： | 集沙仪是定量监测风沙活动的重要工具。设计了一种自动连续称重式集沙仪,可以根据试验需要采集不同高度沙样,每分钟收集一次质量数据,实现高频连续集沙。试验结果显示,自动连续称重式集沙仪在15、30、60 cm高度的集沙量满足随高度增加呈指数减少的规律;在15 cm高度,风速与输沙通量呈指数函数关系(y=6E-05·e0.8417x,R2=0.6042),随集沙高度升高输沙通量与风速相关性减弱。自动连续称重式集沙仪与新型平口式集沙仪所测的输沙通量具有很好的一致性(y=0.8119x+0.2645,R2=0.7481)。自动连续称重式集沙仪虽然在稳固性方面需要改良,但能够很好地捕捉高度在15 cm以下沙物质的输移信息,野外应用效果良好,是一种适合野外高精度风沙活动自动监测的新型测量工具。
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| 关 键 词： | 风蚀 自动连续称重式集沙仪 新型平口式集沙仪 野外试验 |
| 收稿时间： | 2017-12-27 |
| 修稿时间： | 2018-02-15 |
A Continuous-weighing Sand Trap:design and field evaluations |
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| Cui Yazhen,Guo Zhongling,Chang Chunping,Wang Rende,Li Jifeng.A Continuous-weighing Sand Trap:design and field evaluations[J].Journal of Desert Research,2018,38(6):1166-1174. |
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| Authors: | Cui Yazhen Guo Zhongling Chang Chunping Wang Rende Li Jifeng |
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| Institution: | 1. College of Resource and Environment Sciences/Hebei Key Laboratory of Environment Change and Ecological Construction, Hebei Normal University, Shijiazhuang 050024, China;2. Institute of Geographical Sciences/Hebei Engineering Research Center for Geographic Information, Hebei Academy of Sciences, Shijiazhuang 050011, China |
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| Abstract: | Sand collector is important to quantitatively monitor aeolian sand activities. In this research, a cyclone type continuous-weigh sand trap was designed. This sand trap was further investigated for farmland environment during a storm in the Kangbao County of the agro-pastoral ecotone of northern China. The results showed that the cumulative sediments weights of the cyclone type continuous-weighing sand trap at heights of 15, 30, and 60 cm exponentially decreased with the increase of collecting heights. Significant exponential relationship between the sediment flux and wind speed was observed for the inlet at the height of 15 cm(y=6E-05·e0.8417x, R2=0.6042), but the correlation coefficients between sediment flux and wind speed decreased with the increase of the inlet height. Comparison of the sediments flux measured by the cyclone type continuous-weighing sand trap and that by the new flat opening collector showed that sediments flux of the new flat opening collector were closely related to that of the cyclone type continuous-weighing sand trap's(y=0.8119x+0.2645, R2=0.7481). Although the cyclone type continuous-weighing sand trap requires improvement in stability, it is able to capture the aeolian sand flux below 15 cm at 1min time scale. |
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| Keywords: | wind erosion cyclone type continuous-weighing sand trap new flat opening collector field use |
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