【摘要】：庫布齊沙漠發(fā)展沙產業(yè),風沙防護是必要舉措。通過風洞試驗與野外觀測探討了礫石覆蓋固沙措施的風沙防護效益及其對土壤溫濕度的影響,旨在為礫石覆蓋在庫布齊沙漠防風固沙中的應用提供科學依據(jù)。研究表明:3cm粒徑礫石床面具有顯著的防風固沙效應:10~16m/s試驗風速下,10%~90%覆蓋度礫石床面風蝕防護效應介于49.4%~100%,其中,50%覆蓋度礫石床面空氣動力學粗糙度達到最大值,風蝕防護效應在96%以上,已達到理想的防風固沙效果。鑒于庫布齊沙漠風況特征,從工程防護角度講,40%覆蓋度礫石覆蓋固沙措施能夠達到防風蝕的目的,風蝕防護效應在93%以上,且能起到白天降溫、夜間保溫的作用,減少極端氣溫對作物的傷害,還能提高土壤含水量。本研究可為礫石覆蓋固沙措施在干旱區(qū)風蝕防護中的應用提供借鑒作用。
[Abstract]:Development of sand industry in Kubuqi desert, sand protection is a necessary measure. Through wind tunnel test and field observation, the effect of gravel covering and sand fixation measures on soil temperature and humidity is discussed. The purpose of this paper is to provide scientific basis for the application of gravel covering in wind and sand fixation in Kubuqi desert. The results show that the 3cm particle size gravel bed mask has significant wind and sand fixation effect: under the wind speed of 10~16m/s test, the wind erosion protection effect of the gravel bed surface with 10% coverage is between 49.4% and 100%, and the wind erosion protection effect of the gravel bed surface is between 49.4% and 100% under the wind speed of 10~16m/s test. The aerodynamics roughness of gravel bed with 50% coverage reached the maximum value and the effect of wind erosion protection was above 96%, which had reached the ideal effect of wind and sand fixation. In view of the characteristics of wind conditions in Kubuqi Desert, from the point of view of engineering protection, 40% gravel coverage and sand fixation measures can achieve the purpose of preventing wind erosion, and the effect of wind erosion protection is more than 93%, and it can play the role of cooling during the day and keeping heat at night. Reducing the damage to crops caused by extreme temperatures can also increase soil moisture content. This study can be used for reference in the application of gravel covering and sand fixation measures in the protection of wind erosion in arid areas.
【作者單位】： 中國科學院西北生態(tài)環(huán)境資源研究院敦煌戈壁荒漠研究站;億利資源集團;
【基金】：國家科技支撐計劃項目(2015BAC06B01-02) 中國科學院西北生態(tài)環(huán)境資源研究院青年人才成長資助基金(51Y651K41)
【分類號】：S157

【相似文獻】

相關期刊論文 前6條

1 包小慶,陳渠昌;庫布齊沙漠侵蝕狀況及治理構想[J];水土保持研究;1998年03期

2 許忠;風沙對溝川發(fā)育的影響[J];泥沙研究;1983年02期

3 閆德仁;薛博;吳麗娜;;庫布齊沙漠東北緣人工林土壤水分含量的變化[J];內蒙古林業(yè)科技;2011年03期

4 楊茂,蔣有則,閆琳,張碧峰;庫布齊沙漠穿沙公路沿線水土特征的研究[J];內蒙古林學院學報;1999年02期

5 格日樂;張力;劉軍;寧瑞些;烏仁陶德;高巖;;庫布齊沙漠人工梭梭林地土壤水分動態(tài)規(guī)律的研究[J];干旱區(qū)資源與環(huán)境;2006年06期

6 王文彪;肖巍;;從沙物質粒度分析結果研討沙生植物的固沙作用[J];干旱區(qū)資源與環(huán)境;2011年09期

，

本文編號：2352520