水土保持学报2013，Vol.27Issue(2)：67-70,4.
东北黑土地土壤风蚀风洞模拟试验研究
An Experimental Study of Wind Erosion Wind Tunnel Simulation on the Black Soil in Northeast China
摘要
Abstract
Arable land in the northeast black soil region of China has loose soil structure and low anti-erosion ability, thus easily leading to wind erosion under the windy weather. In this study, the wind tunnel simulation test was carried out to investigate the characteristics of the influences of wind erosion dominant factors on aeolian-sand flow structure and wind-erosion amount during the wind erosion process in black soil farmland of Tuquan county in the northeast black soil region of China. According to the experimental results, wind speed profile in aeolian-sand flow of black soil showed logarithmic distribution, the influences of soil particle movement in aeolian-sand flow on wind speed were mainly concentrated within the height of 80 mm, the content of wind erosion matter in the aeolian-sand flow section of black soil was decreased exponentially with the increase of height, the aeolian-sand flow height of black soil increased logarithmically with the increase of wind speed, wind-erosion amount of the black soil increased exponentially with the increase of wind speed. Furthermore, the moisture content of wind-erosion critical topsoiKsoil within a depth of 2 cm) was 7%, earth surface with topsoil moisture content above 7% was difficult to lead to wind erosion, wind-erosion amount and topsoil moisture content were consistent with the logarithmic distribution within the range of critical soil moisture content, wind erosion intensity of black soil increased exponentially with the increase of wind speed.关键词
黑土地/风蚀/风沙流/风洞Key words
black soil/ wind erosion/ wind-drift sand/ wind tunnel分类
农业科技引用本文复制引用
刘铁军,赵显波,赵爱国,郭建英..东北黑土地土壤风蚀风洞模拟试验研究[J].水土保持学报,2013,27(2):67-70,4.基金项目
国家自然科学基金项目(40901136,41201264) （40901136,41201264）
中国水科院科研专项(mks1-2013-01) （mks1-2013-01）
