当前位置: 首页 > 文章 > 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 四川农业大学学报 2013,31 (2) 188-192
Position: Home > Articles > Research on Rill Erosion by Laser Scanner Technology:Take the Tipical Black Soil Area of Northeast China for Example Journal of Sichuan Agricultural University 2013,31 (2) 188-192

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

作  者:
王珊;史明昌;王昆;岳鹏
单  位:
北京林业大学林学院
关键词:
典型黑土区;细沟侵蚀;3D激光地貌分析仪
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。
译  名:
Research on Rill Erosion by Laser Scanner Technology:Take the Tipical Black Soil Area of Northeast China for Example
作  者:
WANG Shan,SHI Ming-chang,WANG Kun,YUE Peng(College of Forestry,Beijing Forestry University,Beijing 100083,China)
关键词:
typical black soil area;rill erosion;3D analysis laser
摘  要:
【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.

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