沟蚀（gully erosion）全称“沟谷侵蚀”。指沟谷水流下蚀、侧蚀和溯源侵蚀作用。坡面水流汇集沟槽，流量增大，冲刷加强，沟槽刷深，沟谷谷坡因沟槽剧深而变陡，在水流侧蚀作用参与下，发生崩坍和滑坡，沟底展宽，沟头因溯源侵蚀而不断向沟间地延伸，形成沟谷。
... gully trap 雨水口水封 gullying 沟蚀; 沟蚀作用; 冲沟作用 gully-stabilization works 沟壑稳定工程 ...
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当平均降雨强度相当时，降雨量越大，产生的沟蚀量也越多。
And the bigger the average intensity of rainfall is, the more the gully erosion is produced.
含有介壳的凝缩段、下超面及沟蚀面是划分玛托组体系域的关键界面。
It is condensed section with shells, downlap surface and ravinement surface that constitute the critical boundaries in dividing the system tracts of Matuo Formation.
结果表明，花沟地区的CO2气和CH4气具有不同的地球化学指标组合异常特征，在热蚀碳酸盐、荧光光谱及CO2气含量等指标上有明显的差异。
The result indicates that there are obvious differences between CO2 and CH4 gas reservoirs on value of thermal etching carbonate, fluorescence spectrum and CO2 gas content in Huagou area.
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