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利用航空影像分析黄土丘陵沟壑区周屯沟小流域（面积３３．６ｋｍ２）瓦背状浅沟分布规律。浅沟主要发育在坡耕地上。流域内，浅沟分布区占坡面面积的３１．３％，集中分布，平均频数７．２条／１００ｍ横坡面，密度为４～９条／１００ｍ的浅沟坡面占７８％。相关分析表明，浅沟频数与浅沟的长度、浅沟坡面的总坡度显著相关。浅沟的平均长度６４．７ｍ，３０～１１０ｍ长的浅沟占９１％，浅沟坡面总平均坡度数２３°，１３～３２°的占９５％。瓦背状浅沟实质上是坡耕地上一种产沙量较高的稳定地貌形态。
Using airborne imagery to analyze the distribution pattern of dorsal shallow furrows in Zhoutungou small watershed (area 33.6km2) in the hilly and gully region of Loess Plateau. Shallow ditch mainly develops in sloping fields. Within the basin, the distribution area of shallow ditch accounts for 31.3% of the area of the slope, with a concentration distribution, with an average frequency of 7.2 / 100m and a density of 4-9 / 100m. Correlation analysis shows that the frequency of shallow ditch is significantly related to the length of shallow ditch and the total slope of shallow ditch. The average length of shallow ditch is 64.7m, shallow ditch of 30 ~ 110m is 91%, the average slope of shallow ditch is 23 °, and 95% of 13 ~ 32 °. Shallow ditch shallow trench is essentially a sloping field of a higher sediment yield stable landscape morphology.