四川农业大学学报 ›› 2013, Vol. 31 ›› Issue (02): 188-192.doi: 10.3969/j.issn.1000-2650.2013.02.014

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激光扫描技术应用于细沟侵蚀的研究——以东北典型黑土区为例

王珊, 史明昌, 王昆, 岳鹏   

  1. 北京林业大学林学院, 北京 100083
  • 收稿日期:2013-03-06 出版日期:2013-06-30 发布日期:2017-02-28
  • 通讯作者: 史明昌,教授,研究方向为地理信息系统开发与应用,E-mail:shimc@bjfu.edu.cn。 E-mail:shimc@bjfu.edu.cn
  • 作者简介:王珊,硕士研究生。
  • 基金资助:
    948"水利部科技推广中心引进国际引进水利科学技术计划项目

Research on Rill Erosion by Laser Scanner Technology: Take the Tipical Black Soil Area of Northeast China for Example

WANG Shan, SHI Ming-chang, WANG Kun, YUE Peng   

  1. College of Forestry, Beijing Forestry University, Beijing 100083, China
  • Received:2013-03-06 Online:2013-06-30 Published:2017-02-28

摘要: [目的] 使用德国引进设备3D激光地貌分析仪研究多场降雨下细沟侵蚀过程,为解释黑土区细沟侵蚀过程提供理论依据。[方法] 根据试验地多年自然降雨参数设计人工降雨参数,使用人工降雨设备,在坡度为5°的标准径流小区上进行7场等强度人工降雨,每场降雨后使用3D激光地貌分析仪对地表进行扫描,观测细沟侵蚀的发展过程。[结果] 平均产流率及输沙率大体呈现先增大后减小的趋势,平均产流率及平均输沙率最大值分别出现在第3场降雨及第4场降雨时,值分别为3.30L/min及200.57g/(m2·min);细沟侵蚀强度由第1场降雨的2.061kg/m2最终发展为第7场的7.295kg/m2,增大了约2.54倍。[结论] 使用3D激光地貌分析仪进行细沟侵蚀的监测是可行的,研究区内随着降雨时间的推移,细沟侵蚀是一个不断稳定加强的过程。

关键词: 典型黑土区, 细沟侵蚀, 3D激光地貌分析仪

Abstract: [Objective] The objective of this study was to study the rill erosion process of 7 rainfall by 3D analysis laser made in German,then to provide a theoretical basis to explain the rill erosion process of blank soil area.[Method] Design the artificial rainfall parameters according to the natural rainfall for many years.Using artificial rainfall equipment,rainning on standard runoff plot of 5°for 7 times.Scan the surface after each rainfall,the rill erosion process can be observed.[Results] The tend of average and sediment transport rate is generally similar which increases at first and then decreases.The maximum value of them are 3.30 L/min and 200.57 g/(m2·min),happened in the third and the forth rainfall.From the beginning to the end during the rianfall process,the intensity of rill erosion increased from 2.061 kg/m2 to 7.295 kg/m2.[Conclusion] The result indicates that the rill erosion monitoring is feasible based on the 3D analysis laser.With the rainfall time going on in the study area,the rill erosion is a process of constantly steady and reinforcement.

Key words: typical black soil area, rill erosion, 3D analysis laser

中图分类号: 

  • S157.1