| 北京市农田风蚀的野外观测研究 |
| |
| 引用本文： | 王仁德,邹学勇,赵婧妍.北京市农田风蚀的野外观测研究[J].中国沙漠,2011,31(2):400-406. |
| |
| 作者姓名： | 王仁德 邹学勇 赵婧妍 |
| |
| 作者单位： | 1.河北省科学院 地理科学研究所, 河北 石家庄 050011; 2.地表过程与资源生态国家重点实验室(北京师范大学), 北京 100875; 3.北京师范大学 中国沙漠研究中心, 北京 100875 |
| |
| 基金项目： | 国家“十一五”科技支撑项目(2006BAD26B03); 国家自然科学基金项目(40971011)资助 |
| |
| 摘 要： | 针对半湿润区农田风蚀较弱的特点,采用集沙仪加风速廓线仪和插杆黏捕加电镜分析两种手段对北京市农田的风蚀特征进行了野外观测。结果表明,3类主要风蚀农田中,耙平翻耕地风蚀强度最大,玉米留茬地次之,不耙平翻耕地最弱。随着风速增大,各类农田地表的风蚀强度均呈增加的趋势,并且都表现出较好的指数规律性。风蚀物含量垂向分布遵循幂函数递减规律,风蚀物最大粒径和平均粒径垂向分布亦遵循幂函数和指数函数递减规律,风蚀物粒度组成以粒径小于100 μm的悬移质为主。因此,本研究所得结果反映的是一种以悬移质为主的风沙流结构特征,而这可能是半湿润区最常态的一种的农田风蚀状况。
|
| 关 键 词： | 风蚀 农田 野外观测 北京 |
| 收稿时间： | 2010-7-12 |
| 修稿时间： | 2010-8-28 |
Field Observation of Farmland Wind-erosion around Beijing |
| |
| WANG Ren-de,ZOU Xue-yong,ZHAO Jing-yan.Field Observation of Farmland Wind-erosion around Beijing[J].Journal of Desert Research,2011,31(2):400-406. |
| |
| Authors: | WANG Ren-de ZOU Xue-yong ZHAO Jing-yan |
| |
| Institution: | 1.Institute of Geographical Sciences, Hebei Academy of Sciences, Shijiazhuang 050011, China; 2.State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing Normal University, Beijing 100875; 3.China Center of Desert Research, Beijing Normal University, Beijing 100875, China |
| |
| Abstract: | In view of relatively weak wind-erosion in semi-humid region,a new-style sand sampler and sand trapping device were used in the field observation of farmland wind-erosion in Beijing.The results showed that among three kinds of farmlands,wind-erosion of ploughed and harrowed farmland was the most serious,that of ploughed and non-harrowed farmland is the weakest and that of stubble-keeping farmland lied between them.With the wind speed increasing,wind-erosion intensity of the three types of farmlands presente... |
| |
| Keywords: | wind-erosion farmland field observation Beijing |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《中国沙漠》浏览原始摘要信息 |
| 点击此处可从《中国沙漠》下载免费的PDF全文 |
|
