Moreover, the author makes a test research with the system on soil erosion in Yangdaogou Gully of Wangjiagou Watershed in Lish County, Shanxi Province, and evaluates the test results systematically.
用该系统对山西省离石县王家沟流域羊道沟的土壤侵蚀进行了试验研究，并对试验结果进行了系统评价。
2
The change of ephemeral gully headward erosion, gully-wall collapsing and deep-cutting erosion were quantified in the three stages of initial-phase, metaphase and anaphase.
阐明了在浅沟发育初期、中期和后期三个发育阶段，沟头溯源侵蚀、沟壁扩展和沟床下切侵蚀变化规律。
3
Gullyerosion damages land resources and causes site off environmental problems.