| 摘要: |
| 为研究干旱地区因开发建设项目区而产生较为强烈的以风蚀为主水土流失风蚀特征，选取新疆卡拉贝利工程区作为研究地点，以原始地表和破坏地表作为研究对象，采用集沙仪和风速仪进行风沙的收集和风速的监测，利用土壤筛和天平进行风蚀物粒径分级测量，并利用Spss进行数据统计分析，最终得到了该地区近地表不同下垫面风蚀规律特征。研究表明：破坏地表不同程度地增加了土壤风蚀的可能性，反复碾压地表和弃土场是该地区破坏地表的主要风蚀源；该地区风沙主要集中在距地表高度30 cm内，主要土壤风蚀粒径0~500 μm；输沙量和风蚀物粒径均随着高度的增加而减小，且输沙量沿高度呈指数函数递减；下垫面性质的不同直接影响了近地表土壤风蚀特征，破坏地表对输沙量的影响主要在近地表30 cm内，反复碾压地表对风蚀物粒径的影响主要集中在距地表50 cm内，弃土场对风蚀物粒径的影响则超过55 cm。新疆卡拉贝利工程区不同下垫面地表在土壤可侵蚀性、土壤风沙流结构方面均表现出不同的特征。 |
| 关键词: 土壤风蚀 下垫面 输沙量 风蚀物粒径 卡拉贝利工程区 |
| DOI：10.11841/j.issn.1007-4333.2016.09.13 |
| 投稿时间：2015-09-24 |
| 基金项目:新疆卡拉贝利水利枢纽工程建设管理局资助（klbl2014003） |
|
| Characteristic of wind erosion on different surface of construction site located in Cala Beili,Xinjiang |
|
ZHANG Peng, YIN Zhong-dong, SHANG He-ying, LAN Rui-jun
|
| (College of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China) |
| Abstract: |
| Soil and water erosion in development and construction projects of dry gravel desert area are relatively serious.Xinjiang Cala Beili region was selected as study object.Precise sand samplers and anemometers were set on original surface and destroyed surfaces to collect data.The grading of sediment particles were conducted by using soil sieve SPSS statistical analysis.The results show that:Destroyed surfaces increased the possibility of soil wind erosion,and repeated rolled surface and spoiled surface were the main wind erosion area;The sediment discharge was mainly concentrated in 30 cm height and the mainly erosion practical size were between 0-500 μm in this area;With the increase of height,sand particle size and sediment discharge decreases.The sediment discharge decreased with height by exponential function;With the increase of height,the characteristics of soil wind erosion near the surface,were affected by nature of the underlying surface and the impact on sediment discharge and particle size mainly occurs in near-surface 30 cm and 50 cm,respectively.The possibility of soil wind erosion and structure of sand flow underlying different surface in development projects located in Cala Beili of Xinjiang exhibited different characteristics. |
| Key words: wind erosion underlying surface sediment discharge sediment particle size development projects of Cala Beili |
