土壤侵蚀速率近景摄影测量法(CRPE)的野外试验研究

Field Experiment on Soil Erosion Rate in Close-Range Photogrammetry(CRPE) Method

在北京市延庆县水土保持科技示范区内,对土壤侵蚀速率近景摄影测量法(CRPE)进行了野外初步试验应用研究。结果表明:与径流小区观测结果相比,CRPE法土壤侵蚀速率解算精度可达到90%左右;侵蚀针应采取行列式均匀布设方式布设,布设密度对监测精度具有较大影响,最大间距不宜超过1 m,且每行不应少于5根。

The paper conducted preliminary field experimental on soil erosion rate in soil and water conservation technical pilot area of Yanqing County in Beijing by using close range photogrammetry(CRPE) method.The outcomes show that: a) the calculation accuracy of CRPE can reach to about 90%,comparing with the observation result of runoff plot and;b) the erosion pin should be uniform layout in lines;c) layout density is the main affecting factors,and the maximum spacing of pins should be smaller than 1 m and each line should be more than 5 pins.