Relationship between sand-dust weather and water dynamics of desert areas in the middle reaches of Heihe River

Yun Niu; XianDe Liu; Xin Li; YanQiang Wei; Hu Zhang; XiaoYan Li

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Relationship between sand-dust weather and water dynamics of desert areas in the middle reaches of Heihe River

机译：黑河中游沙漠地区沙尘天气与水动力的关系

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摘要

Sand-dust weather has become an international social-environmental issue of common concern, and constitutes a serious threat to human lives and economic development. In order to explore the responses of natural desert sand and dust to the dynamics of water in desertification, we extracted long-term monitoring data related to precipitation, soil water, groundwater, and sand-dust weather. These data originated from the test stations for desertification control in desert areas of the middle reaches of the Heihe River. We used an algorithm of characteristic parameters, correlations, and multiple regression analysis to establish a regression model for the duration of sand-dust weather. The response characteristics of the natural desert sand and dust and changes of the water inter-annual and annual variance were also examined. Our results showed:(1) From 2006 to 2014 the frequency, duration, and volatility trends of sand-dust weather obviously increased, but the change amplitudes of precipitation, soil water, and groundwater level grew smaller.(2) In the vegetative growth seasons from March to November, the annual variance rates of the soil moisture content in each of four studied layers of soil samples were similar, and the changes in the frequency and duration of sand-dust weather were similar.(3) Our new regression equation for the duration of sand-dust weather passed the R test, F test, and t test. By this regression model we could predict the duration of sand-dust weather with an accuracy of 42.9%. This study can thus provide technological support and reference data for water resource management and research regarding sand-dust weather mechanisms.

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《寒旱区科学：英文版》 |2016年第006期|P.516-523|共8页
作者
Yun Niu; XianDe Liu; Xin Li; YanQiang Wei; Hu Zhang; XiaoYan Li;
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作者单位

[1]Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China;

[2]Academy of Ecology Science of Zhangye, Gansu;

Science and Technology Innovation Service Platform of Ecology in Qilian Mountains, Gansu Province, Zhangye, Gansu 734000, China;

[3]Academy of Water Resource Conservation Forests of Qilian Mountains in Gansu Province, Test Station of Desertifica-tion Control in Hongshawo, Zhangye, Gansu 734000, China;

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收录信息中国科学引文数据库(CSCD);
原文格式 PDF
正文语种 CHI
中图分类 P445.4;
关键词
沙尘天气; 沙漠地区; 黑河中游; 水动力; 地下水位变化; 持续时间; 多元回归分析; 土壤水分;

机译：沙尘天气;沙漠地区;黑河中游;水动力;地下水位变化;持续时间;多元回归分析;土壤水分;

Relationship between sand-dust weather and water dynamics of desert areas in the middle reaches of Heihe River

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